# Rosetta Code/Count examples/Full list

Full output for the Rosetta Code/Count examples#Raku task. Updated periodically.

This is something of a experiment. The languages have their completed task entries marked with a circled digit in the table so you can sort on the language to see which tasks have been done. Hold down control and click on several columns to do secondary, tertiary, etc. sorts.

Languages that omit a certain task have an uppercase O filled in for that task.

Ideally it would be nice to be able to generate the table on demand for any language but it is fairly intensive to generate. Once a week is ok, on demand would be unsustainable.

More than about 10 languages per page gets unwieldy and difficult to navigate. Generate reports for the top N languages in groups of 10. (N == 40 for now.)

See Rosetta_Code/Rank_languages_by_popularity/Full_list for a full language/task completion table.

Top tier | Second tier | Third tier | Fourth tier |

First ten programming languages by number of task examples completed: ① Wren ② Phix ③ Julia ④ Raku ⑤ Nim ⑥ Go ⑦ Perl ⑧ Python ⑨ J ⑩ FreeBASIC

Count | Task | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |
---|---|---|---|---|---|---|---|---|---|---|---|

599 | Hello world/Text | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

389 | FizzBuzz | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

382 | 99 bottles of beer | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

359 | 100 doors | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

313 | Comments | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

311 | Factorial | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

310 | Fibonacci sequence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

303 | A+B | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

295 | Empty program | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

264 | Loops/Infinite | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

255 | Reverse a string | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

249 | Ackermann function | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

247 | Arrays | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

247 | Function definition | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

242 | Loops/For | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

234 | Conditional structures | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

234 | Loops/While | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

226 | Array concatenation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

220 | Arithmetic/Integer | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

216 | Greatest element of a list | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

210 | Greatest common divisor | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

210 | Repeat a string | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

208 | Even or odd | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

207 | Increment a numerical string | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

206 | Sieve of Eratosthenes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

204 | Array length | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

201 | Binary digits | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

199 | Averages/Arithmetic mean | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

199 | Hello world/Graphical | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

198 | Towers of Hanoi | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

197 | String concatenation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

196 | Copy a string | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

195 | Rot-13 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

192 | Sum and product of an array | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

191 | Loops/Downward for | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

190 | Boolean values | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

190 | Hello world/Newline omission | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

190 | Palindrome detection | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

189 | Character codes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

189 | Integer comparison | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

188 | Integer sequence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

187 | Apply a callback to an array | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

185 | Loops/For with a specified step | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

185 | String length | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

184 | String case | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

183 | Tokenize a string | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

182 | Sum of a series | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

181 | Loops/Break | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

181 | Loops/Foreach | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

180 | Empty string | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

180 | Quine | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

177 | Sum of squares | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

175 | Logical operations | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

174 | Dot product | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

174 | Filter | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

174 | Hailstone sequence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

172 | Loops/Do-while | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

166 | Loops/N plus one half | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

164 | Caesar cipher | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

164 | Generic swap | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

163 | Associative array/Creation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

163 | Leap year | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

163 | Sort an integer array | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

160 | Determine if a string is numeric | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

160 | Luhn test of credit card numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

158 | Generate lower case ASCII alphabet | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

158 | User input/Text | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

157 | System time | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

156 | Command-line arguments | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

156 | Factors of an integer | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

156 | Stack | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

155 | Execute a system command | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

155 | Higher-order functions | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

155 | Loops/Continue | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

155 | Zero to the zero power | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

154 | ABC problem | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

154 | Hello world/Standard error | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

153 | Loop over multiple arrays simultaneously | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

153 | Sorting algorithms/Quicksort | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

152 | Bitwise operations | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

152 | Mutual recursion | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

151 | Primality by trial division | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

151 | Sorting algorithms/Bubble sort | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

150 | Guess the number | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

149 | Read entire file | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

149 | Remove duplicate elements | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

148 | Check that file exists | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

148 | Least common multiple | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

147 | Balanced brackets | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

147 | Count in octal | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

147 | Create a file | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

146 | Ethiopian multiplication | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

146 | Roman numerals/Encode | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

145 | Happy numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

145 | Sleep | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

144 | Day of the week | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

144 | File input/output | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

144 | Mandelbrot set | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

143 | Count occurrences of a substring | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

143 | Date format | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

142 | Program termination | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

142 | Substring | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

141 | Literals/Integer | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

141 | Literals/String | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

141 | Pascal's triangle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

140 | Variables | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

139 | Strip a set of characters from a string | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

137 | Function composition | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

137 | Knuth shuffle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

136 | Compound data type | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

136 | N-queens problem | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

136 | Pick random element | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

135 | Babbage problem | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

135 | Loops/Nested | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

134 | Include a file | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

134 | Letter frequency | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

134 | Matrix transposition | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

134 | Null object | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

134 | Sorting algorithms/Insertion sort | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

134 | String matching | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

133 | Averages/Median | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

132 | Align columns | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

131 | Averages/Root mean square | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

131 | Detect division by zero | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

131 | File size | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

131 | Look-and-say sequence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

131 | Read a file line by line | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

130 | Anagrams | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

130 | Binary search | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

130 | Matrix multiplication | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

130 | Return multiple values | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

130 | String append | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

129 | Flatten a list | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

128 | Associative array/Iteration | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

128 | Delete a file | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

128 | Hash from two arrays | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

128 | Identity matrix | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

127 | Conway's Game of Life | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

127 | Find limit of recursion | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

127 | Guess the number/With feedback | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

127 | Perfect numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

126 | Harshad or Niven series | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

126 | Input loop | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

126 | Sierpinski triangle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

125 | Levenshtein distance | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

125 | Roman numerals/Decode | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

124 | Comma quibbling | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

124 | Haversine formula | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

124 | Substring/Top and tail | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

123 | Call a function | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

123 | Case-sensitivity of identifiers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

123 | Environment variables | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

123 | Reverse words in a string | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

123 | Run-length encoding | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

123 | String interpolation (included) | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

122 | Assertions | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

122 | Bulls and cows | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

122 | Classes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

122 | Real constants and functions | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

121 | Ordered words | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

121 | Search a list | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

121 | Variadic function | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

120 | Arithmetic/Complex | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

120 | Multiplication tables | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

120 | Pangram checker | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

120 | Rename a file | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

120 | Sum multiples of 3 and 5 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

119 | Combinations | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

119 | Formatted numeric output | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

119 | HTTP | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

119 | Strip whitespace from a string/Top and tail | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

118 | Averages/Pythagorean means | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

118 | Horner's rule for polynomial evaluation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

117 | Create a two-dimensional array at runtime | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

117 | Infinity | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

117 | Sum digits of an integer | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

117 | The Twelve Days of Christmas | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

116 | Accumulator factory | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

116 | Evaluate binomial coefficients | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

116 | Hostname | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

116 | Permutations | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

116 | Program name | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

115 | Anonymous recursion | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

115 | Random numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

115 | String prepend | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

115 | Temperature conversion | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

114 | Calculating the value of e | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

114 | Digital root | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

114 | Sequence of non-squares | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

114 | Zig-zag matrix | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

113 | Sorting algorithms/Merge sort | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

112 | 24 game | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

112 | Middle three digits | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

112 | Queue/Definition | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

112 | Trigonometric functions | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

111 | Amicable pairs | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

111 | Catalan numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

111 | Exceptions | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

111 | Time a function | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

110 | Evolutionary algorithm | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

110 | Shell one-liner | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

110 | Vector products | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

109 | Abundant, deficient and perfect number classifications | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

109 | Arbitrary-precision integers (included) | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

109 | Arithmetic-geometric mean | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

109 | Prime decomposition | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

109 | Short-circuit evaluation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

107 | Enumerations | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

107 | Hello world/Newbie | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

107 | N'th | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

107 | Regular expressions | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

107 | Symmetric difference | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

106 | Show ASCII table | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

106 | Split a character string based on change of character | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

106 | Tree traversal | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

105 | Floyd's triangle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

105 | Power set | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

104 | Averages/Mode | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

104 | Create an HTML table | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

104 | Sorting algorithms/Selection sort | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

104 | Walk a directory/Non-recursively | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

103 | Collections | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

103 | Hamming numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

103 | Hofstadter Q sequence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

103 | Y combinator | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

102 | Entropy | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

102 | Execute Brain**** | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

102 | Exponentiation operator | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

102 | Map range | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

102 | Range expansion | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

101 | Interactive programming (repl) | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

101 | Nth root | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

101 | Sort using a custom comparator | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

101 | String comparison | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

100 | Address of a variable | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

100 | MD5 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

99 | First-class functions | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

99 | Gray code | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

99 | Modular inverse | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

99 | Number reversal game | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

99 | Random number generator (included) | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

99 | Sorting algorithms/Cocktail sort | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

98 | Catamorphism | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

98 | Compare a list of strings | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

98 | Forward difference | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

98 | Langton's ant | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

98 | Last Friday of each month | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

98 | Sorting algorithms/Bogosort | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

98 | Sorting algorithms/Heapsort | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

97 | CSV data manipulation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

97 | Monty Hall problem | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

97 | Range extraction | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

97 | Repeat | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

97 | Sierpinski carpet | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

97 | Terminal control/Clear the screen | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

96 | Greatest subsequential sum | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

96 | Inheritance/Single | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

96 | JSON | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

96 | Menu | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

96 | One-dimensional cellular automata | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

96 | Sorting algorithms/Gnome sort | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

95 | Abstract type | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

95 | Anti-primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

95 | Averages/Simple moving average | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

95 | Cumulative standard deviation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

95 | Number names | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

94 | Almost prime | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

94 | Department numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

94 | Munchausen numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

94 | Population count | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

94 | Simple windowed application | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

93 | Additive primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

93 | Box the compass | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

93 | Count in factors | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

93 | Find the last Sunday of each month | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

93 | Five weekends | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

93 | Literals/Floating point | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

93 | Non-decimal radices/Convert | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

92 | CRC-32 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

92 | CSV to HTML translation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

92 | Find common directory path | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

92 | Here document | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

92 | Multifactorial | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

92 | Operator precedence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

92 | Set | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

92 | URL decoding | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

91 | Count the coins | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

91 | Hello world/Line printer | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

91 | Order two numerical lists | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

91 | Playing cards | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

91 | Queue/Usage | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

91 | Window creation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

91 | Word wrap | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

90 | 100 prisoners | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

90 | Bitmap | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

90 | Long multiplication | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

90 | SEDOLs | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

90 | Sort an array of composite structures | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

90 | Strip comments from a string | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

90 | Terminal control/Ringing the terminal bell | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

90 | Thue-Morse | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

90 | Top rank per group | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

89 | 15 puzzle game | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

89 | Benford's law | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

89 | Price fraction | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

89 | Proper divisors | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

89 | Read a specific line from a file | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

89 | Walk a directory/Recursively | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

88 | Closures/Value capture | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

88 | Find the missing permutation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

88 | Josephus problem | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

88 | Take notes on the command line | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

88 | URL encoding | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

87 | Angle difference between two bearings | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

87 | File modification time | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

87 | Introspection | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

87 | Jump anywhere | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

87 | Pi | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

87 | Spiral matrix | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

86 | Attractive numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

86 | Call an object method | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

86 | Convert seconds to compound duration | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

86 | Dynamic variable names | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

86 | Extend your language | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

86 | Knapsack problem/0-1 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

86 | Lucas-Lehmer test | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

86 | Pythagorean triples | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

86 | Show the epoch | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

86 | Singly-linked list/Traversal | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

86 | Sorting algorithms/Shell sort | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

86 | XML/Input | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

85 | Man or boy test | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

85 | Monte Carlo methods | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

85 | Priority queue | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

85 | Rep-string | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

85 | Sorting algorithms/Counting sort | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

84 | Dragon curve | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

84 | Fibonacci n-step number sequences | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

84 | Kaprekar numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

84 | Keyboard input/Obtain a Y or N response | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

84 | Linear congruential generator | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

84 | Sequence of primes by trial division | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

84 | Sockets | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

84 | Sort disjoint sublist | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

84 | Special characters | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

83 | Concurrent computing | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

83 | Date manipulation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

83 | Gamma function | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

83 | Jewels and stones | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

83 | Old lady swallowed a fly | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

83 | Pernicious numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

83 | Semordnilap | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

83 | Soundex | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

83 | Unicode variable names | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

83 | Vigenère cipher | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

83 | Write entire file | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

82 | Animation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

82 | Calendar | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

82 | Call a foreign-language function | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

82 | Currying | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

82 | Equilibrium index | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

82 | Phrase reversals | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

82 | Quaternion type | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

82 | Singly-linked list/Element definition | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

82 | Sorting algorithms/Comb sort | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

82 | Web scraping | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

81 | Anagrams/Deranged anagrams | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

81 | Averages/Mean angle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

81 | Empty directory | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

81 | Flow-control structures | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

81 | Fractal tree | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

81 | Jensen's Device | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

81 | List comprehensions | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

81 | Narcissistic decimal number | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

81 | Rock-paper-scissors | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

81 | Sort three variables | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

81 | Zeckendorf number representation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

80 | AKS test for primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

80 | Euler method | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

80 | Exponentiation order | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

80 | General FizzBuzz | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

80 | Guess the number/With feedback (player) | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

80 | ISBN13 check digit | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

80 | Sudoku | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

79 | Chinese remainder theorem | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

79 | Damm algorithm | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

79 | Draw a sphere | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

79 | Four bit adder | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

79 | Hello world/Web server | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

79 | I before E except after C | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

79 | Maze generation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

79 | McNuggets problem | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

79 | Non-decimal radices/Output | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

79 | SHA-1 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

79 | Square but not cube | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

79 | Strip control codes and extended characters from a string | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

79 | Trabb Pardo–Knuth algorithm | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

79 | Van Eck sequence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

78 | Execute HQ9+ | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

78 | Largest int from concatenated ints | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

78 | Read a configuration file | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

78 | Self-describing numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

78 | Semiprime | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

78 | Sorting algorithms/Stooge sort | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

78 | Stern-Brocot sequence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

78 | Write float arrays to a text file | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

77 | Bitmap/Bresenham's line algorithm | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

77 | Catalan numbers/Pascal's triangle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

77 | Enforced immutability | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

77 | Roots of unity | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

77 | Stair-climbing puzzle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

77 | Unix/ls | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

77 | Van der Corput sequence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

77 | Yin and yang | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

76 | Barnsley fern | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

76 | Combinations with repetitions | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

76 | Exceptions/Catch an exception thrown in a nested call | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

76 | Multiple distinct objects | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

76 | Nested function | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

76 | Parsing/RPN calculator algorithm | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

76 | SHA-256 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

76 | Special variables | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

75 | Constrained random points on a circle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

75 | Continued fraction | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

75 | Determine if a string is collapsible | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

75 | Longest common subsequence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

75 | Magic 8-ball | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

75 | Polymorphism | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

75 | Remove vowels from a string | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

75 | Tau function | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

74 | 4-rings or 4-squares puzzle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

74 | Amb | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

74 | Arithmetic/Rational | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

74 | Numerical integration | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

74 | Probabilistic choice | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

74 | RPG attributes generator | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

74 | Runtime evaluation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

74 | Word frequency | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

73 | Closest-pair problem | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

73 | Draw a cuboid | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

73 | Dutch national flag problem | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

73 | Fast Fourier transform | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

73 | Get system command output | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

73 | IBAN | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

73 | Isqrt (integer square root) of X | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

73 | Magic squares of odd order | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

73 | Modular exponentiation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

73 | Morse code | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

73 | Named parameters | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

73 | Smith numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

73 | Sorting algorithms/Pancake sort | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

73 | Text processing/Max licenses in use | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

73 | Two sum | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

73 | Variable size/Get | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

72 | Abundant odd numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

72 | Best shuffle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

72 | Cartesian product of two or more lists | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

72 | Chinese zodiac | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

72 | Compile-time calculation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | O | ⑨ | ⑩ |

72 | Extract file extension | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

72 | Leonardo numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

72 | Singly-linked list/Element insertion | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

72 | Subleq | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

72 | Two identical strings | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

71 | Base64 decode data | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

71 | Circles of given radius through two points | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

71 | Determine if a string has all the same characters | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

71 | Disarium numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

71 | Euler's sum of powers conjecture | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

71 | Host introspection | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

71 | Long year | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

71 | Longest common prefix | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

71 | Memory allocation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

71 | One of n lines in a file | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

71 | Primality by Wilson's theorem | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

71 | Remove lines from a file | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

71 | Roots of a function | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

70 | Binary strings | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

70 | Documentation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

70 | Emirp primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

70 | Factors of a Mersenne number | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

70 | Mouse position | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

70 | Reduced row echelon form | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

70 | Sort stability | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

70 | Write language name in 3D ASCII | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

69 | 9 billion names of God the integer | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

69 | Animate a pendulum | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

69 | Arithmetic evaluation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

69 | Base64 encode data | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

69 | CUSIP | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

69 | Cholesky decomposition | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

69 | Draw a clock | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

69 | Draw a pixel | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

69 | Fork | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

69 | Integer overflow | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

69 | Miller–Rabin primality test | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

69 | Non-decimal radices/Input | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

69 | Plot coordinate pairs | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

69 | Runge-Kutta method | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

69 | Tau number | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

69 | Test a function | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

69 | Tic-tac-toe | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

69 | Undefined values | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

69 | XML/Output | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

68 | Averages/Mean time of day | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

68 | Copy stdin to stdout | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

68 | Globally replace text in several files | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

68 | HTTPS | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

68 | Hofstadter-Conway $10,000 sequence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

68 | Longest common substring | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

68 | Roots of a quadratic function | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

68 | Sorting algorithms/Sleep sort | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

68 | Terminal control/Display an extended character | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

67 | Cantor set | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

67 | Code Golf: Code Golf | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

67 | FASTA format | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

67 | Gapful numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

67 | Inheritance/Multiple | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

67 | Optional parameters | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

67 | Pascal matrix generation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

67 | Quickselect algorithm | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

67 | Ternary logic | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

67 | Truncatable primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

67 | Vector | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

66 | 2048 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

66 | Bitmap/Write a PPM file | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

66 | Farey sequence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

66 | Generator/Exponential | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

66 | Knapsack problem/Continuous | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

66 | Knapsack problem/Unbounded | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

66 | Knight's tour | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

66 | Loops/Increment loop index within loop body | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

66 | Ludic numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

66 | Maximum triangle path sum | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

66 | Smallest square that begins with n | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

66 | Totient function | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

66 | Unicode strings | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

66 | Words containing "the" substring | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

65 | Archimedean spiral | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

65 | Days between dates | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

65 | Dinesman's multiple-dwelling problem | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

65 | Fusc sequence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

65 | JortSort | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

64 | 24 game/Solve | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

64 | Add a variable to a class instance at runtime | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

64 | Brownian tree | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

64 | DNS query | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

64 | Deal cards for FreeCell | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

64 | Discordian date | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

64 | Fibonacci word | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

64 | Huffman coding | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

64 | Left factorials | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

64 | Matrix-exponentiation operator | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

64 | Multisplit | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

64 | Nim game | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

64 | Sattolo cycle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

64 | Sorting algorithms/Permutation sort | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

64 | Sum of divisors | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

64 | Sum of first n cubes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

64 | Truncate a file | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

63 | Convert decimal number to rational | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

63 | Dijkstra's algorithm | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

63 | Find the intersection of two lines | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

63 | Horizontal sundial calculations | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

63 | Iterated digits squaring | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

63 | Loops/With multiple ranges | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

63 | Odd word problem | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

63 | Partial function application | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

63 | Random number generator (device) | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

63 | Scope modifiers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

63 | Terminal control/Coloured text | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

63 | Validate International Securities Identification Number | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

62 | Define a primitive data type | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

62 | Doubly-linked list/Element definition | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

62 | Extreme floating point values | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

62 | Grayscale image | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

62 | Kernighans large earthquake problem | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

62 | LZW compression | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

62 | Largest proper divisor of n | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

62 | Mad Libs | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

62 | Pointers and references | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

62 | Sort numbers lexicographically | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

62 | Stem-and-leaf plot | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

61 | Abbreviations, automatic | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

61 | Associative array/Merging | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

61 | Compare length of two strings | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

61 | Hash join | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

61 | Pig the dice game | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

61 | Sorting algorithms/Bead sort | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

61 | Topological sort | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

61 | Unbias a random generator | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

61 | User input/Graphical | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

60 | Bell numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

60 | Bernoulli numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

60 | First-class functions/Use numbers analogously | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

60 | Forest fire | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

60 | Inverted syntax | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

60 | Keyboard input/Keypress check | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

60 | Password generator | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

60 | Perfect shuffle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

60 | Runtime evaluation/In an environment | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

60 | Shoelace formula for polygonal area | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

60 | Sierpinski triangle/Graphical | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

60 | Singleton | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

60 | Tokenize a string with escaping | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

60 | Water collected between towers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

59 | Call a function in a shared library | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

59 | Chaos game | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

59 | Delegates | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

59 | Halt and catch fire | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

59 | Handle a signal | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

59 | Holidays related to Easter | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

59 | Kronecker product | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

59 | Non-continuous subsequences | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

59 | Perfect totient numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

59 | Rosetta Code/Rank languages by popularity | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

59 | Search a list of records | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

59 | Stack traces | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

59 | Statistics/Basic | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

59 | Universal Turing machine | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

59 | Wireworld | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

58 | ABC words | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

58 | Bioinformatics/base count | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

58 | Determine if a string has all unique characters | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

58 | Egyptian division | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

58 | Heronian triangles | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

58 | Hofstadter Figure-Figure sequences | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

58 | Modulinos | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

58 | Naming conventions | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

58 | Rate counter | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

58 | Recaman's sequence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

58 | Set consolidation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

58 | Seven-sided dice from five-sided dice | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

58 | Strange plus numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

58 | Strip block comments | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

58 | Sum of the digits of n is substring of n | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

58 | XML/XPath | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

57 | Find words which contains more than 3 e vowels | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

57 | Fractran | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

57 | Generate Chess960 starting position | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

57 | Longest string challenge | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

57 | Matrix with two diagonals | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

57 | Odd and square numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

57 | Polynomial regression | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

57 | XML/DOM serialization | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

56 | Average loop length | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

56 | Extensible prime generator | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

56 | Gaussian elimination | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

56 | Jaro similarity | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

56 | Longest increasing subsequence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

56 | Move-to-front algorithm | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

56 | Send email | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | O | ⑩ |

56 | Synchronous concurrency | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

56 | Terminal control/Cursor positioning | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

56 | The Name Game | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

56 | Ulam spiral (for primes) | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

55 | Casting out nines | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

55 | Determinant and permanent | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

55 | Determine if a string is squeezable | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

55 | Doubly-linked list/Element insertion | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

55 | Execute a Markov algorithm | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

55 | Hilbert curve | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

55 | Mertens function | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

55 | Munching squares | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

55 | Spinning rod animation/Text | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

55 | Substitution cipher | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

55 | Text between | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

55 | Text processing/2 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

55 | Zebra puzzle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

54 | 21 game | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

54 | Aliquot sequence classifications | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

54 | Append a record to the end of a text file | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

54 | Convex hull | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

54 | Digital root/Multiplicative digital root | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

54 | Doubly-linked list/Traversal | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑨ | ⑩ | |

54 | Elementary cellular automaton | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

54 | Find words which contains all the vowels | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

54 | Greyscale bars/Display | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

54 | Idiomatically determine all the lowercase and uppercase letters | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

54 | Musical scale | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

53 | Chowla numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

53 | Count how many vowels and consonants occur in a string | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

53 | Currency | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

53 | Dining philosophers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

53 | Floyd-Warshall algorithm | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

53 | Image noise | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

53 | MAC vendor lookup | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

53 | Make directory path | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

53 | Numbers divisible by their individual digits, but not by the product of their digits. | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

53 | Start from a main routine | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | O | ⑨ | ⑩ |

53 | Text processing/1 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

52 | Approximate equality | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

52 | Colour bars/Display | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

52 | Doubly-linked list/Definition | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑨ | ⑩ | |

52 | GUI component interaction | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

52 | Last letter-first letter | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

52 | Metaprogramming | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

52 | Permutations/Derangements | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

52 | Polymorphic copy | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

52 | Polynomial long division | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

52 | Problem of Apollonius | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

52 | Respond to an unknown method call | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

52 | Send an unknown method call | ① | ② | ③ | ④ | O | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

52 | Show the (decimal) value of a number of 1s appended with a 3, then squared | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

52 | Stable marriage problem | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

52 | Strange numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

52 | Taxicab numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

52 | Verify distribution uniformity/Naive | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

51 | 10001th prime | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

51 | Abbreviations, easy | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

51 | Ascending primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

51 | Base 16 numbers needing a to f | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

51 | Bitmap/Flood fill | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

51 | Colour pinstripe/Display | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

51 | Combinations and permutations | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

51 | Find prime n such that reversed n is also prime | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

51 | History variables | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

51 | Product of divisors | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

51 | UTF-8 encode and decode | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

51 | Unique characters | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

51 | Variable size/Set | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

50 | Bitmap/Midpoint circle algorithm | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

50 | Bitmap/Read a PPM file | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

50 | Brazilian numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

50 | Bulls and cows/Player | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

50 | Coprimes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

50 | Deepcopy | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

50 | Flipping bits game | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

50 | Golden ratio/Convergence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

50 | Humble numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

50 | Lah numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

50 | Nice primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

50 | Permutations by swapping | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

50 | Sequence: smallest number with exactly n divisors | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

50 | Shift list elements to left by 3 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

50 | Sorting Algorithms/Circle Sort | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

50 | Sorting algorithms/Radix sort | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

50 | Sparkline in unicode | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

50 | Special divisors | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

50 | Sum to 100 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

50 | Twelve statements | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

50 | Visualize a tree | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

50 | Yellowstone sequence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

49 | Active object | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

49 | Continued fraction/Arithmetic/Construct from rational number | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

49 | Determine if only one instance is running | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

49 | Display a linear combination | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

49 | Element-wise operations | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

49 | File extension is in extensions list | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

49 | Find square difference | ① | ② | ③ | ④ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ | |

49 | Loops/Wrong ranges | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

49 | Magnanimous numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

49 | Narcissist | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

49 | OpenGL | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

49 | Parsing/Shunting-yard algorithm | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

49 | Pseudo-random numbers/Middle-square method | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

49 | Steady squares | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

49 | Sudan function | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

49 | Terminal control/Dimensions | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

48 | Abbreviations, simple | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

48 | Balanced ternary | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

48 | Color of a screen pixel | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

48 | Eban numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

48 | Feigenbaum constant calculation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

48 | Fivenum | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

48 | GUI/Maximum window dimensions | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

48 | Input/Output for pairs of numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

48 | Julia set | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

48 | Keyboard input/Flush the keyboard buffer | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

48 | Knapsack problem/Bounded | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

48 | Long primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

48 | Mersenne primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

48 | Palindrome dates | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

48 | Safe primes and unsafe primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

48 | Secure temporary file | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

48 | Sort a list of object identifiers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

48 | Speech synthesis | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

48 | Subtractive generator | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

48 | Truth table | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

47 | Arithmetic numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

47 | Brace expansion | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

47 | Cheryl's birthday | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

47 | Echo server | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

47 | Euler's identity | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

47 | Extra primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

47 | Factorions | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

47 | Find the intersection of a line with a plane | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

47 | Find words whose first and last three letters are equal | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

47 | Largest number divisible by its digits | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

47 | Numbers with prime digits whose sum is 13 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

47 | Pythagorean quadruples | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

47 | Read a file character by character/UTF8 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

47 | Rosetta Code/Count examples | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

47 | Sailors, coconuts and a monkey problem | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

47 | Scope/Function names and labels | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

47 | Sorting algorithms/Patience sort | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

47 | Sutherland-Hodgman polygon clipping | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

47 | Table creation/Postal addresses | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

47 | Terminal control/Hiding the cursor | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

47 | Triplet of three numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

47 | Type detection | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

46 | Append numbers at same position in strings | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

46 | Arithmetic-geometric mean/Calculate Pi | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

46 | Atomic updates | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | O | ⑩ |

46 | Carmichael 3 strong pseudoprimes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

46 | Chaocipher | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

46 | Compiler/lexical analyzer | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

46 | Cycle detection | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

46 | Find prime numbers of the form n*n*n+2 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

46 | Find words with alternating vowels and consonants | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

46 | Hickerson series of almost integers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

46 | Integer roots | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

46 | Koch curve | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

46 | MD5/Implementation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

46 | Numerical integration/Adaptive Simpson's method | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

46 | Pascal's triangle/Puzzle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

46 | Permutations with repetitions | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

46 | Primorial numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

46 | Sequence: smallest number greater than previous term with exactly n divisors | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

45 | Bitwise IO | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

45 | Church numerals | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

45 | Cramer's rule | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

45 | Cuban primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

45 | Digit fifth powers | ① | ② | ③ | ④ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ | |

45 | Fairshare between two and more | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

45 | Find palindromic numbers in both binary and ternary bases | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

45 | Find squares n where n+1 is prime | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

45 | First 9 prime Fibonacci number | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

45 | Four is magic | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

45 | Frobenius numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

45 | Input/Output for lines of text | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

45 | Kahan summation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

45 | Magic squares of doubly even order | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

45 | Parametric polymorphism | ① | ② | ③ | ④ | ⑤ | ⑥ | O | O | ⑨ | ⑩ |

45 | Partition an integer x into n primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

45 | Percentage difference between images | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

45 | Primes whose sum of digits is 25 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

45 | Ranking methods | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

45 | S-expressions | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

45 | Solve the no connection puzzle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

45 | Sorting algorithms/Strand sort | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

45 | Sum of elements below main diagonal of matrix | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

45 | Summarize and say sequence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

45 | Terminal control/Inverse video | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

45 | Variable-length quantity | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

45 | Voronoi diagram | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

44 | Abelian sandpile model | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

44 | Alternade words | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

44 | Calendar - for "REAL" programmers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | O | ⑨ | ⑩ |

44 | Cousin primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

44 | Function prototype | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | O | ⑨ | ⑩ |

44 | Implicit type conversion | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

44 | Longest common suffix | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

44 | Maze solving | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

44 | Modular arithmetic | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

44 | Numbers in base-16 representation that cannot be written with decimal digits | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

44 | Palindromic primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

44 | Parallel calculations | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

44 | Penney's game | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

44 | Prime conspiracy | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

44 | Sort the letters of string in alphabetical order | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

44 | Test integerness | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

44 | Topswops | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

44 | Vampire number | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

43 | Check output device is a terminal | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

43 | Circular primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

43 | GUI enabling/disabling of controls | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

43 | Inverted index | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

43 | Knuth's algorithm S | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

43 | Metronome | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

43 | Mosaic matrix | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

43 | Multiple regression | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

43 | Numbers whose binary and ternary digit sums are prime | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

43 | Pathological floating point problems | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

43 | Pythagoras tree | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

43 | Ray-casting algorithm | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

43 | Statistics/Normal distribution | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

43 | Xiaolin Wu's line algorithm | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

42 | Bitmap/Bézier curves/Cubic | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑨ | ⑩ | |

42 | Change e letters to i in words | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

42 | Common list elements | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

42 | Determine if two triangles overlap | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

42 | Dice game probabilities | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

42 | Draw a rotating cube | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

42 | Fibonacci word/fractal | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

42 | Find if a point is within a triangle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

42 | Harmonic series | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

42 | Length of an arc between two angles | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

42 | Maximum difference between adjacent elements of list | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

42 | Minimum multiple of m where digital sum equals m | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

42 | Multi-dimensional array | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

42 | Numbers with same digit set in base 10 and base 16 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

42 | Numerical integration/Gauss-Legendre Quadrature | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

42 | Old Russian measure of length | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

42 | Order disjoint list items | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

42 | Permutation test | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

42 | Pinstripe/Display | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

42 | Poker hand analyser | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

42 | QR decomposition | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

42 | Rosetta Code/Find bare lang tags | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

42 | Safe and Sophie Germain primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

42 | Strange unique prime triplets | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

42 | Unique characters in each string | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

42 | Word wheel | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

41 | Angles (geometric), normalization and conversion | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

41 | Apply a digital filter (direct form II transposed) | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

41 | Break OO privacy | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

41 | Calkin-Wilf sequence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

41 | Canonicalize CIDR | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

41 | Constrained genericity | ① | ② | ③ | ④ | ⑤ | ⑥ | O | O | ⑨ | ⑩ |

41 | Create a file on magnetic tape | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑩ | ||

41 | Deceptive numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

41 | Diversity prediction theorem | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

41 | Doomsday rule | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

41 | Entropy/Narcissist | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

41 | Events | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

41 | First power of 2 that has leading decimal digits of 12 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

41 | LU decomposition | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

41 | Lychrel numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

41 | Machine code | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑩ | ||

41 | Metered concurrency | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

41 | Minimum number of cells after, before, above and below NxN squares | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

41 | Minimum numbers of three lists | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

41 | Möbius function | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

41 | O'Halloran numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

41 | Object serialization | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

41 | Parsing/RPN to infix conversion | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

41 | Perlin noise | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

41 | Positive decimal integers with the digit 1 occurring exactly twice | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

41 | Set puzzle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

41 | Smarandache prime-digital sequence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

41 | Square-free integers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

41 | Successive prime differences | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

40 | AVL tree | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑨ | ||

40 | Conjugate transpose | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

40 | Create an object at a given address | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | O | ⑨ | ⑩ |

40 | Find first missing positive | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

40 | Four sides of square | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

40 | Gauss-Jordan matrix inversion | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

40 | Jacobi symbol | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

40 | Motzkin numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

40 | Negative base numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

40 | Neighbour primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

40 | Numbers in base 10 that are palindromic in bases 2, 4, and 16 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

40 | Numbers with equal rises and falls | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

40 | Polyspiral | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

40 | Strong and weak primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

40 | Subset sum problem | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

40 | Summarize primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

40 | Weird numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

40 | Zumkeller numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

39 | Algebraic data types | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

39 | Bin given limits | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

39 | Bitmap/Bézier curves/Quadratic | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑨ | ⑩ | |

39 | Burrows–Wheeler transform | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

39 | Common sorted list | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

39 | Erdős-primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

39 | Esthetic numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

39 | Find first and last set bit of a long integer | ① | ② | ③ | ④ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ | |

39 | Find minimum number of coins that make a given value | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

39 | First perfect square in base n with n unique digits | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

39 | Giuga numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

39 | Jacobsthal numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

39 | Minesweeper game | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

39 | Multiline shebang | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

39 | Mutex | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

39 | Parse command-line arguments | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

39 | Peano curve | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

39 | Pragmatic directives | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

39 | RIPEMD-160 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

39 | RSA code | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

39 | Sorting algorithms/Cycle sort | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

39 | Superellipse | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

39 | Terminal control/Unicode output | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

39 | Textonyms | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

39 | Twin primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

39 | Words from neighbour ones | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

38 | Changeable words | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

38 | Color wheel | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

38 | Day of the week of Christmas and New Year | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ⑩ | |

38 | Euler's constant 0.5772... | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ⑩ | |

38 | Faulhaber's triangle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

38 | Find words which contain the most consonants | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

38 | Greedy algorithm for Egyptian fractions | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

38 | Largest prime factor | ① | ② | ③ | ④ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ | |

38 | MD4 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

38 | Ordered partitions | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

38 | Padovan sequence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

38 | Partition function P | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

38 | Pentagram | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

38 | Primes with digits in nondecreasing order | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

38 | Product of min and max prime factors | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

38 | Ramer-Douglas-Peucker line simplification | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

38 | Reflection/List properties | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

38 | Rosetta Code/Find unimplemented tasks | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

38 | Solve a Hidato puzzle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

38 | Sum and product puzzle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

38 | Terminal control/Cursor movement | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

37 | Bacon cipher | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

37 | Biorhythms | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

37 | Check input device is a terminal | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | O | ⑩ |

37 | Chemical calculator | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

37 | Death Star | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

37 | Decimal floating point number to binary | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

37 | Deconvolution/1D | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

37 | Descending primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

37 | Determine sentence type | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

37 | Exactly three adjacent 3 in lists | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

37 | Galton box animation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

37 | Generate random numbers without repeating a value | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

37 | Law of cosines - triples | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

37 | Long literals, with continuations | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

37 | Mayan numerals | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

37 | Mian-Chowla sequence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

37 | Next highest int from digits | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

37 | Numbers which are the cube roots of the product of their proper divisors | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

37 | Pell's equation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

37 | Pseudo-random numbers/PCG32 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

37 | Range consolidation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

37 | Sexy primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

37 | Simple database | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

37 | Sylvester's sequence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

37 | Terminal control/Preserve screen | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

37 | URL parser | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

37 | Wieferich primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

36 | Chebyshev coefficients | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

36 | Cullen and Woodall numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

36 | Decision tables | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

36 | Factorial primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

36 | Faulhaber's formula | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

36 | Increasing gaps between consecutive Niven numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

36 | Monads/Maybe monad | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

36 | Odd squarefree semiprimes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

36 | Odd words | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

36 | Random Latin squares | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

36 | Sleeping Beauty problem | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

36 | Smallest multiple | ① | ② | ③ | ④ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ | |

36 | Super-d numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

36 | Topic variable | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

36 | Two's complement | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ⑩ | |

36 | Write to Windows event log | ① | ② | ③ | ④ | ⑥ | ⑦ | ⑧ | ⑩ | ||

35 | Bioinformatics/Sequence mutation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

35 | Bitmap/Histogram | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑨ | ||

35 | Cistercian numerals | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

35 | Concatenate two primes is also prime | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

35 | De Bruijn sequences | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

35 | Distinct power numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

35 | Executable library | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

35 | FTP | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

35 | Klarner-Rado sequence | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ⑩ | |

35 | Last list item | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

35 | Memory layout of a data structure | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

35 | Mind boggling card trick | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

35 | Minimum positive multiple in base 10 using only 0 and 1 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

35 | Multiplicative order | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

35 | Parallel brute force | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

35 | Parameterized SQL statement | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | O | ⑩ |

35 | Pierpont primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

35 | Piprimes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

35 | Prime numbers which contain 123 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

35 | Prime triplets | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

35 | Resistor mesh | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

35 | Selectively replace multiple instances of a character within a string | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

35 | Set of real numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

35 | Sierpinski arrowhead curve | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

35 | Stirling numbers of the first kind | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

35 | Stirling numbers of the second kind | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

35 | Straddling checkerboard | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

35 | Summation of primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

35 | Unprimeable numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

35 | Use another language to call a function | ① | ② | ④ | ⑤ | ⑥ | ⑧ | ⑨ | |||

35 | Verify distribution uniformity/Chi-squared test | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

35 | Window creation/X11 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

35 | Word break problem | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

34 | Bitcoin/address validation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

34 | Cut a rectangle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

34 | Deming's funnel | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

34 | Duffinian numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

34 | Execute SNUSP | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

34 | Finite state machine | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

34 | First class environments | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

34 | Generate random chess position | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

34 | HTTPS/Authenticated | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

34 | Honaker primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

34 | Hunt the Wumpus | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

34 | Idiomatically determine all the characters that can be used for symbols | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

34 | Kronecker product based fractals | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

34 | Largest five adjacent number | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

34 | N-smooth numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

34 | Nonoblock | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

34 | Prime words | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

34 | Reflection/List methods | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

34 | Riordan numbers | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ⑩ | |

34 | Sierpinski pentagon | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

34 | Special neighbor primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

34 | Sum of primes in odd positions is prime | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ⑩ | |

34 | Sum of square and cube digits of an integer are primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

34 | Total circles area | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

34 | Video display modes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

34 | Zhang-Suen thinning algorithm | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

33 | Almkvist-Giullera formula for pi | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

33 | Checkpoint synchronization | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

33 | Compiler/virtual machine interpreter | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

33 | Curzon numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

33 | Fermat numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

33 | Go Fish | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

33 | Idoneal numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

33 | Legendre prime counting function | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

33 | Plasma effect | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

33 | Sorting algorithms/Cocktail sort with shifting bounds | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

33 | State name puzzle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

32 | Anadromes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

32 | Arena storage pool | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑨ | ⑩ | |

32 | Chat server | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

32 | Collect and sort square numbers in ascending order from three lists | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

32 | Cyclops numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

32 | Decorate-sort-undecorate idiom | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

32 | Hex words | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ⑩ | |

32 | Honeycombs | ① | ② | ③ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ||

32 | Keyboard macros | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

32 | Merge and aggregate datasets | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

32 | Natural sorting | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

32 | Numbers whose count of divisors is prime | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ⑩ | |

32 | Numeric error propagation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

32 | Own digits power sum | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

32 | Play recorded sounds | ① | ② | ③ | ⑤ | ⑥ | ⑧ | ⑩ | |||

32 | Primes which contain only one odd digit | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

32 | Ramsey's theorem | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

32 | Reverse the order of lines in a text file while preserving the contents of each line | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

32 | Rosetta Code/Fix code tags | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

32 | Stream merge | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

32 | Sunflower fractal | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

32 | Table creation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

32 | Teacup rim text | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

32 | UPC | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

31 | A* search algorithm | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

31 | Birthday problem | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

31 | Brilliant numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

31 | Check Machin-like formulas | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

31 | Coprime triplets | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

31 | De Polignac numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

31 | Euclidean rhythm | ① | ② | ③ | ④ | ⑥ | ⑦ | ⑧ | ⑩ | ||

31 | Find adjacent primes which differ by a square integer | ① | ② | ③ | ④ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ | |

31 | Formal power series | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

31 | Inventory sequence | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ⑩ | |

31 | Longest substrings without repeating characters | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

31 | Magic squares of singly even order | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

31 | Monads/List monad | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

31 | Next special primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

31 | Numeric separator syntax | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

31 | Orbital elements | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

31 | Order by pair comparisons | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

31 | Palindromic gapful numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

31 | Palindromic primes in base 16 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

31 | Pseudo-random numbers/Splitmix64 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

31 | Quadrat special primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

31 | Safe addition | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

31 | Shortest common supersequence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

31 | Snake and ladder | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

31 | Spelling of ordinal numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

31 | Superpermutation minimisation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

31 | The ISAAC cipher | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

31 | Thiele's interpolation formula | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

31 | Tonelli-Shanks algorithm | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

31 | Ulam numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

31 | Update a configuration file | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

31 | Wordle comparison | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

30 | 15 puzzle solver | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

30 | Active Directory/Connect | ① | ② | ③ | ④ | ⑥ | ⑦ | ⑧ | ⑩ | ||

30 | Audio alarm | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑩ | ||

30 | Card shuffles | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

30 | Colorful numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

30 | Consecutive primes with ascending or descending differences | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

30 | Cubic special primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

30 | EKG sequence convergence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

30 | Find largest left truncatable prime in a given base | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

30 | Fixed length records | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

30 | Function frequency | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

30 | Magic constant | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

30 | Matrix chain multiplication | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

30 | N-grams | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | |||

30 | Percolation/Mean run density | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

30 | Primes whose first and last number is 3 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

30 | Same fringe | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

30 | Smallest power of 6 whose decimal expansion contains n | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

30 | Solve a Holy Knight's tour | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

30 | Sum of two adjacent numbers are primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

29 | Abelian sandpile model/Identity | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑨ | ||

29 | Base58Check encoding | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

29 | Calmo numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

29 | Camel case and snake case | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑩ | ||

29 | Commatizing numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

29 | Continued fraction/Arithmetic/G(matrix ng, continued fraction n) | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑨ | ||

29 | Elementary cellular automaton/Random number generator | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

29 | Euclid-Mullin sequence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

29 | Exponentiation with infix operators in (or operating on) the base | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

29 | Fraction reduction | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

29 | Getting the number of decimal places | ① | ② | ③ | ④ | ⑥ | ⑦ | ⑧ | ⑩ | ||

29 | Image convolution | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

29 | Intersecting number wheels | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

29 | Largest difference between adjacent primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

29 | Levenshtein distance/Alignment | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

29 | Make a backup file | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

29 | Nautical bell | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

29 | Padovan n-step number sequences | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

29 | Paraffins | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

29 | Parse an IP Address | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

29 | Permutations/Rank of a permutation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

29 | Permuted multiples | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ⑩ | |

29 | Rare numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

29 | Record sound | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑩ | ||

29 | Self numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

29 | Sequence of primorial primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

29 | Snake | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

29 | Soloway's recurring rainfall | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ⑩ | |

29 | Solve a Numbrix puzzle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

29 | Sort primes from list to a list | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

29 | Wagstaff primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

29 | Welch's t-test | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

29 | Wilson primes of order n | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

29 | World Cup group stage | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

28 | ASCII art diagram converter | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

28 | Achilles numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

28 | Blum integer | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

28 | Cipolla's algorithm | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

28 | Distributed programming | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

28 | Elliptic curve arithmetic | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

28 | File size distribution | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

28 | K-means++ clustering | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑨ | ||

28 | Kolakoski sequence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

28 | Kosaraju | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

28 | Linux CPU utilization | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

28 | Lucky and even lucky numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

28 | Playfair cipher | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

28 | Print itself | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

28 | Pseudo-random numbers/Xorshift star | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

28 | Reverse the gender of a string | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

28 | Round-robin tournament schedule | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

28 | The sieve of Sundaram | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

28 | Yahoo! search interface | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

27 | Composite numbers k with no single digit factors whose factors are all substrings of k | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

27 | Conjugate a Latin verb | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

27 | Largest product in a grid | ① | ② | ③ | ④ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ | |

27 | List rooted trees | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

27 | Main step of GOST 28147-89 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

27 | Markov chain text generator | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

27 | Monads/Writer monad | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

27 | Permutations with some identical elements | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

27 | Pisano period | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

27 | Prime numbers p for which the sum of primes less than or equal to p is prime | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

27 | RCRPG | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

27 | Sierpinski curve | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

27 | Simulate input/Keyboard | ① | ② | ④ | ⑤ | ⑥ | ⑦ | ⑧ | |||

27 | Solve triangle solitaire puzzle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

27 | Special factorials | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

27 | Sum data type | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑩ | ||

27 | Word ladder | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

27 | Zeckendorf arithmetic | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

26 | Arithmetic derivative | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

26 | Assertions in design by contract | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ⑩ | |

26 | Goldbach's comet | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ⑩ | |

26 | Hough transform | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

26 | Inconsummate numbers in base 10 | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ⑩ | |

26 | Index finite lists of positive integers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

26 | Mastermind | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

26 | Meissel–Mertens constant | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

26 | Modified random distribution | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

26 | N-body problem | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

26 | Nested templated data | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

26 | Ormiston pairs | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

26 | Pancake numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

26 | Periodic table | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

26 | Print debugging statement | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

26 | Radical of an integer | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ⑩ | |

26 | Sierpinski square curve | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

26 | Sine wave | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

26 | Sphenic numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

26 | Substring primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑩ | ||

26 | Variable declaration reset | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

26 | Vibrating rectangles | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

26 | Vigenère cipher/Cryptanalysis | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

25 | Active Directory/Search for a user | ① | ② | ③ | ④ | ⑥ | ⑦ | ⑧ | ⑩ | ||

25 | Addition chains | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

25 | Bifid cipher | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ||

25 | Bilinear interpolation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

25 | Continued fraction/Arithmetic/G(matrix ng, continued fraction n1, continued fraction n2) | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | |||

25 | Double Twin Primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

25 | Eertree | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

25 | Find duplicate files | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

25 | Joystick position | ① | ② | ③ | ④ | ⑥ | ⑧ | ⑩ | |||

25 | Largest palindrome product | ① | ② | ③ | ④ | ⑥ | ⑦ | ⑧ | ⑩ | ||

25 | Line circle intersection | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑩ | ||

25 | Matrix digital rain | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

25 | Median filter | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

25 | Metallic ratios | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

25 | Minimum primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ⑩ | |

25 | Native shebang | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

25 | Pandigital prime | ① | ② | ③ | ④ | ⑥ | ⑦ | ⑨ | ⑩ | ||

25 | Perceptron | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑩ | ||

25 | Practical numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

25 | Quoting constructs | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ⑩ | |

25 | Reflection/Get source | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

25 | SOAP | ① | ② | ③ | ④ | ⑥ | ⑦ | ⑧ | |||

25 | Sequence: nth number with exactly n divisors | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

25 | Set right-adjacent bits | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

25 | Solve a Hopido puzzle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

25 | Untrusted environment | ① | ② | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ⑩ | ||

24 | Air mass | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

24 | Bitcoin/public point to address | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

24 | Compare sorting algorithms' performance | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑨ | ⑩ | |

24 | Compiler/code generator | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

24 | Compiler/syntax analyzer | ① | ② | ③ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ||

24 | Create an object/Native demonstration | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

24 | Elementary cellular automaton/Infinite length | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

24 | Erdős-Nicolas numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

24 | Iccanobif primes | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ⑩ | |

24 | Juggler sequence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

24 | K-d tree | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑨ | ||

24 | Nonogram solver | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

24 | Numbers which are not the sum of distinct squares | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ⑩ | |

24 | Peaceful chess queen armies | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

24 | Pig the dice game/Player | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

24 | Polynomial synthetic division | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

24 | Separate the house number from the street name | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

24 | Singly-linked list/Element removal | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑩ | ||

24 | Smallest numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

24 | Sokoban | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

24 | Special pythagorean triplet | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

24 | Upside-down numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

24 | Vogel's approximation method | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

23 | ABC correlation | ① | ② | ③ | ④ | ⑧ | ⑩ | ||||

23 | Draw pixel 2 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

23 | Equal prime and composite sums | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

23 | Fortunate numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

23 | Jordan-Pólya numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

23 | Knuth's power tree | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

23 | Latin Squares in reduced form | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

23 | Long stairs | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

23 | Montgomery reduction | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

23 | Names to numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

23 | Pairs with common factors | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ⑩ | |

23 | Percolation/Site percolation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

23 | Pseudo-random numbers/Combined recursive generator MRG32k3a | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

23 | Ruth-Aaron numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ⑩ | |

23 | Sub-unit squares | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ⑩ | |

23 | Two bullet roulette | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

23 | Useless instructions | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ||

22 | Cyclotomic polynomial | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

22 | Data Encryption Standard | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

22 | Imaginary base numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

22 | Jaro-Winkler distance | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

22 | Logistic curve fitting in epidemiology | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

22 | Longest palindromic substrings | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

22 | Multiplicatively perfect numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ⑩ | |

22 | Nimber arithmetic | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

22 | Percolation/Mean cluster density | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

22 | Primes - allocate descendants to their ancestors | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

22 | Rhonda numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

22 | Safe mode | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ||

22 | Selective file copy | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ⑩ | |

22 | Self-hosting compiler | ① | ② | O | ④ | ⑤ | ⑥ | ⑧ | ⑨ | ⑩ | |

22 | Simulate input/Mouse | ① | ② | ③ | ④ | ⑥ | ⑧ | ⑩ | |||

22 | Tarjan | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

22 | Window management | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

22 | XXXX redacted | ① | ② | ③ | ④ | ⑥ | ⑦ | ⑧ | ⑩ | ||

21 | Arithmetic coding/As a generalized change of radix | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

21 | Aspect oriented programming | ① | ② | ③ | ④ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ | |

21 | Bézier curves/Intersections | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑩ | ||

21 | Color quantization | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

21 | Curve that touches three points | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ⑩ | |

21 | Distribution of 0 digits in factorial series | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

21 | Forbidden numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

21 | HTTPS/Client-authenticated | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

21 | Just in time processing on a character stream | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

21 | Minimal steps down to 1 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

21 | P-value correction | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

21 | Pell numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

21 | Penrose tiling | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

21 | Pseudorandom number generator image | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

21 | Readline interface | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

21 | Repunit primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

21 | SEND + MORE = MONEY | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

21 | Simulated annealing | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ⑩ | |

21 | Solve hanging lantern problem | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ⑩ | |

21 | Three word location | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ⑩ | |

21 | Transportation problem | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ||

21 | Tree from nesting levels | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

21 | Ultra useful primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

21 | XML validation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

20 | Bernstein basis polynomials | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑩ | ||

20 | Bitmap/Read an image through a pipe | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

20 | Chernick's Carmichael numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

20 | Code segment unload | ① | ② | ③ | ④ | ⑥ | ⑦ | ⑧ | ⑩ | ||

20 | Compiler/AST interpreter | ① | ② | ③ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ||

20 | Execute Computer/Zero | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑨ | ⑩ | |

20 | Find URI in text | ① | ② | ③ | ④ | ⑥ | ⑦ | ||||

20 | Jaccard index | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ⑩ | |

20 | Most frequent k chars distance | ① | ② | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ||

20 | NYSIIS | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

20 | OpenWebNet password | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

20 | Ormiston triples | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

20 | Penta-power prime seeds | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

20 | Polynomial derivative | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

20 | Prime triangle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

20 | Primes: n*2^m+1 | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ⑩ | |

20 | Proof | ① | ② | ④ | ⑤ | ⑥ | O | ⑨ | ⑩ | ||

20 | Quad-power prime seeds | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

20 | Rendezvous | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | O | ⑩ | |

20 | Retrieve and search chat history | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

20 | SQL-based authentication | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

20 | Square root by hand | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ⑩ | |

20 | Steffensen's method | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑩ | ||

20 | Terminal control/Positional read | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

20 | War card game | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

20 | Wolstenholme numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

20 | Word search | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

19 | ADFGVX cipher | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

19 | Banker's algorithm | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

19 | Binary coded decimal | ① | ② | ③ | ④ | ⑤ | ⑨ | ⑩ | |||

19 | Bitmap/PPM conversion through a pipe | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

19 | CalmoSoft primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

19 | Earliest difference between prime gaps | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

19 | Extreme primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑨ | ⑩ | |

19 | Free polyominoes enumeration | ① | ② | ③ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ||

19 | Gaussian primes | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ⑩ | |

19 | Geohash | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

19 | Gradient descent | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ||

19 | Home primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

19 | Minkowski question-mark function | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

19 | Non-transitive dice | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

19 | Percolation/Bond percolation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

19 | SHA-256 Merkle tree | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

19 | VList | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑨ | ⑩ | ||

19 | Zsigmondy numbers | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ||

18 | Audio frequency generator | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑩ | ||

18 | Bioinformatics/Subsequence | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

18 | CORDIC | ① | ② | ③ | ④ | ⑦ | ⑧ | ⑨ | ⑩ | ||

18 | Canny edge detector | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

18 | Centre and radius of a circle passing through 3 points in a plane | ① | ② | ③ | ④ | ⑩ | |||||

18 | Count the coins/0-1 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

18 | Even numbers which cannot be expressed as the sum of two twin primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

18 | Find Chess960 starting position identifier | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

18 | Geometric algebra | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑨ | ⑩ | |

18 | Iterators | ① | ② | ③ | ④ | ⑤ | ⑧ | ⑨ | ⑩ | ||

18 | Pan base non-primes | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑨ | ⑩ | ||

18 | Particle swarm optimization | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

18 | Pentomino tiling | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

18 | Ramanujan primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

18 | Ramanujan's constant | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

18 | Sorting algorithms/Tree sort on a linked list | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑨ | ⑩ | ||

18 | Square form factorization | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ⑩ | |

18 | Suffix tree | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

18 | Topological sort/Extracted top item | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

18 | Triangular numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ⑩ | |

18 | Tropical algebra overloading | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑩ | ||

18 | Walsh matrix | ① | ② | ③ | ④ | ⑦ | ⑨ | ⑩ | |||

18 | Wordiff | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ⑩ | |

17 | Boustrophedon transform | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ⑩ | |

17 | Factorial base numbers indexing permutations of a collection | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

17 | Four is the number of letters in the ... | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

17 | Gotchas | ① | ② | ③ | ④ | ⑦ | ⑨ | ||||

17 | Graph colouring | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

17 | Isograms and heterograms | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑨ | ⑩ | ||

17 | Multi-base primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑩ | ||

17 | Overloaded operators | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑩ | |||

17 | Penholodigital squares | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ⑩ | |

17 | Prime numbers whose neighboring pairs are tetraprimes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑨ | ⑩ | ||

17 | Rodrigues’ rotation formula | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑩ | ||

17 | Search in paragraph's text | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ||

17 | Tetris | ① | ② | ③ | ⑥ | ⑦ | ⑧ | ||||

17 | Unit testing | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑩ | |||

17 | Untouchable numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ⑩ | |

17 | Verhoeff algorithm | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |

16 | 16 puzzle game | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ⑩ | |

16 | ASCII control characters | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑩ | ||

16 | Anaprimes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ||

16 | Binomial transform | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑨ | ||

16 | Boyer-Moore string search | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ⑩ | |

16 | Display an outline as a nested table | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

16 | Distance and Bearing | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ||

16 | Erdös-Selfridge categorization of primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ||

16 | Faces from a mesh | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

16 | Fermat pseudoprimes | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑨ | ⑩ | ||

16 | Functional coverage tree | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

16 | Interactive help | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑩ | ||

16 | Magic numbers | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ||

16 | Mayan calendar | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

16 | Railway circuit | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

16 | Rainbow | ① | ② | ③ | ④ | ⑥ | ⑦ | ⑧ | ⑩ | ||

16 | Ramanujan primes/twins | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ⑩ | |

16 | Run as a daemon or service | ① | ② | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | ||

16 | Set, the card game | ① | ② | ③ | ④ | ⑧ | ⑨ | ⑩ | |||

16 | Shape-Machine | ① | ② | ③ | ④ | ⑧ | ⑩ | ||||

16 | Simple turtle graphics | ① | ② | ③ | ⑦ | ⑧ | ⑨ | ⑩ | |||

16 | Sisyphus sequence | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ||

16 | Smarandache-Wellin primes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ||

16 | Text completion | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑩ | ||

16 | Tree datastructures | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

16 | Undulating numbers | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑨ | ⑩ | ||

16 | Unescape a string | ① | ② | ③ | ④ | ⑧ | ⑩ | ||||

15 | Apéry's constant | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ||

15 | Catmull–Clark subdivision surface | ① | ② | ③ | ⑤ | ⑥ | ⑧ | ⑨ | |||

15 | Centroid of a set of N-dimensional points | ① | ② | ③ | ④ | ⑥ | ⑦ | ⑩ | |||

15 | Check if two polygons overlap | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑩ | ||

15 | Fibonacci matrix-exponentiation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

15 | French Republican calendar | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑩ | ||

15 | Greed | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑩ | ||

15 | Hourglass puzzle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

15 | One-time pad | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

15 | Prime reciprocal sum | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ||

15 | Sieve of Pritchard | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ⑩ | |

15 | Solve equations with substitution method | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑩ | ||

15 | Suffixation of decimal numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

15 | Tupper's self-referential formula | ① | ② | ③ | ④ | ⑤ | ⑧ | ⑨ | |||

14 | Check if a polygon overlaps with a rectangle | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑩ | ||

14 | Checksumcolor | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

14 | Colour pinstripe/Printer | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑩ | ||

14 | Combinations with repetitions/Square digit chain | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑩ | ||

14 | Countdown | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ⑩ | |

14 | Deconvolution/2D+ | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

14 | Execute CopyPasta Language | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

14 | Generalised floating point addition | ① | ② | ③ | ④ | ⑥ | ⑦ | ⑨ | |||

14 | Greatest prime dividing the n-th cubefree number | ① | ② | ③ | ④ | ⑧ | ⑩ | ||||

14 | Knuth-Morris-Pratt string search | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ⑩ | |

14 | L-system | ① | ② | ③ | ④ | ⑧ | ⑩ | ||||

14 | Launch rocket with countdown and acceleration in stdout | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑩ | ||

14 | Least m such that n! + m is prime | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑨ | |||

14 | One-two primes | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ||

14 | Peripheral drift illusion | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑩ | |||

14 | Powerful numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

14 | Singly-linked list/Reversal | ① | ② | ③ | ④ | ⑤ | ⑨ | ⑩ | |||

14 | Smallest number k such that k+2^m is composite for all m less than k | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

14 | Sort an outline at every level | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

14 | Super-Poulet numbers | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ||

14 | Time-based one-time password algorithm | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ||

14 | Transliterate English text using the Greek alphabet | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ||

14 | Using a speech engine to highlight words | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑩ | |||

14 | Worthwhile task shaving | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑩ | |||

13 | Bioinformatics/Global alignment | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

13 | Brace expansion using ranges | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | |||

13 | Factorize string into Lyndon words | ① | ② | ③ | ④ | ||||||

13 | Hex dump | ① | ② | ③ | ④ | ⑧ | ⑨ | ⑩ | |||

13 | Particle fountain | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑩ | ||

13 | Range modifications | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

13 | Resistance calculator | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

13 | Rice coding | ① | ② | ③ | ④ | ⑦ | ⑧ | ⑩ | |||

13 | Rosetta Code/Rank languages by number of users | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

13 | Singular value decomposition | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | ⑨ | ||

13 | Spoof game | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑩ | ||

13 | Sync subtitles | ① | ② | ③ | ④ | ⑧ | ⑩ | ||||

13 | Terminal control/Restricted width positional input/No wrapping | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑩ | ||

13 | Wasteful, equidigital and frugal numbers | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑨ | |||

12 | Babylonian spiral | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ||

12 | Distinct palindromes within decimal numbers | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | |||

12 | Elliptic Curve Digital Signature Algorithm | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

12 | Engel expansion | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑨ | |||

12 | External sort | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

12 | IPC via named pipe | ① | ② | ④ | ⑥ | ⑦ | ⑩ | ||||

12 | Morpion solitaire | ① | ② | ③ | ⑤ | ⑥ | ⑦ | ⑨ | |||

12 | Numerical and alphabetical suffixes | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

12 | Parse EBNF | ① | ② | ③ | ④ | ⑥ | ⑦ | ||||

12 | Pinstripe/Printer | ① | ② | ③ | ④ | ⑤ | ⑥ | ||||

12 | Rosetta Code/Tasks without examples | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | |||

12 | Starting a web browser | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ||

12 | Terminal control/Restricted width positional input/With wrapping | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑩ | ||

11 | ABC incremental counts | ① | ② | ③ | ④ | ⑧ | ⑩ | ||||

11 | Addition-chain exponentiation | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | |||

11 | Discrete Fourier transform | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

11 | Doubly-linked list/Element removal | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑩ | |||

11 | GSTrans string conversion | ① | ② | ③ | ④ | ⑧ | |||||

11 | Hashtron inference | ① | ② | ③ | ④ | ⑥ | ⑧ | ⑩ | |||

11 | I'm a software engineer, get me out of here | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑨ | ||

11 | Inner classes | ① | ② | ③ | ④ | ⑥ | ⑨ | ⑩ | |||

11 | Integer long division | ① | ② | ③ | ④ | ⑤ | ⑦ | ||||

11 | N-queens minimum and knights and bishops | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | |

11 | Numbers k such that the last letter of k is the same as the first letter of k+1 | ① | ② | ③ | ④ | ⑧ | ⑨ | ⑩ | |||

11 | OpenGL/Utah teapot | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑨ | ⑩ | ||

11 | Price list behind API | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ⑩ | |

11 | Robots | ① | ② | ③ | ④ | ⑥ | ⑨ | ⑩ | |||

11 | Sealed classes and methods | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑨ | ⑩ | ||

11 | Smallest enclosing circle problem | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | |||

11 | Sorensen–Dice coefficient | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ||

11 | Statistics/Chi-squared distribution | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑩ | ||

11 | Text to HTML | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | |||

11 | URL shortener | ① | ② | ③ | ④ | ⑥ | ⑧ | ||||

10 | Anagram generator | ① | ② | ③ | ④ | ⑤ | ⑨ | ||||

10 | B-spline | ① | ② | ③ | ④ | ⑦ | |||||

10 | Black box | ① | ② | ③ | ⑤ | ⑥ | ⑨ | ⑩ | |||

10 | Compiler/Verifying syntax | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | |||

10 | Cycles of a permutation | ① | ② | ③ | ④ | ⑤ | ⑧ | ||||

10 | Factor-perfect numbers | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑨ | ||

10 | JSON pointer | ① | ② | ③ | ④ | ⑥ | ⑦ | ⑧ | |||

10 | P-Adic numbers, basic | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑩ | |||

10 | Random sentence from book | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | |||

10 | Raster bars | ① | ② | ③ | ④ | ⑤ | ⑥ | ||||

10 | Resistance network calculator | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | ||

10 | Strassen's algorithm | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | |||

10 | Syntax highlighting using Mediawiki formatting | ① | ② | ③ | ⑧ | ||||||

10 | Tamagotchi emulator | ① | ② | ③ | ⑤ | ⑥ | |||||

10 | Universal Lambda Machine | ① | ② | ⑦ | ⑧ | ||||||

10 | User defined pipe and redirection operators | ① | ② | ③ | ④ | ⑥ | ⑦ | ⑨ | |||

10 | Variadic fixed-point combinator | ① | ② | ③ | ④ | ⑧ | ⑩ | ||||

9 | Audio overlap loop | ① | ② | ③ | ⑤ | ⑥ | ⑩ | ||||

9 | Carmichael lambda function | ① | ② | ③ | ④ | ⑧ | |||||

9 | Consistent overhead byte stuffing | ① | ② | ③ | ④ | ⑦ | ⑧ | ||||

9 | Dating agency | ① | ② | ③ | ④ | ⑦ | ⑧ | ⑩ | |||

9 | Dominoes | ① | ② | ③ | ⑤ | ⑦ | |||||

9 | Eisenstein primes | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑨ | |||

9 | Exponential digital sums | ① | ② | ③ | ④ | ⑧ | |||||

9 | Fibonacci heap | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑧ | |||

9 | Horse racing | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑩ | ||

9 | Lyndon word | ① | ③ | ④ | ⑩ | ||||||

9 | Marching squares | ① | ② | ③ | ④ | ⑦ | ⑧ | ⑨ | |||

9 | Multidimensional Newton-Raphson method | ① | ② | ③ | ④ | ⑤ | ⑥ | ||||

9 | OpenGL pixel shader | ① | ② | ⑥ | |||||||

9 | Rosetta Code/Run examples | ① | ② | ④ | ⑤ | ⑥ | |||||

9 | Segmentation fault protection | ① | ② | ③ | ④ | ⑤ | ⑦ | ||||

9 | Selection bias in clinical sciences | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑧ | ⑩ | ||

8 | Compiler/Simple file inclusion pre processor | ① | ② | ③ | ④ | ⑨ | |||||

8 | Hexapawn | ① | ② | ③ | ⑥ | ⑦ | ⑧ | ||||

8 | Lagrange Interpolation | ① | ② | ③ | ④ | ⑨ | |||||

8 | Lucas-Carmichael numbers | ① | ② | ③ | ④ | ⑦ | ⑧ | ||||

8 | P-Adic square roots | ① | ② | ③ | ⑤ | ⑩ | |||||

8 | Recursive descent parser generator | ① | ② | ③ | ④ | ⑥ | ⑦ | ⑨ | |||

8 | Remote agent/Agent logic | ① | ② | ③ | ⑥ | ⑦ | |||||

8 | Remote agent/Simulation | ① | ② | ③ | ⑥ | ⑦ | |||||

8 | Simulated optics experiment/Data analysis | ① | ② | ③ | ⑤ | ⑧ | |||||

8 | Simulated optics experiment/Simulator | ① | ② | ③ | ⑤ | ⑧ | |||||

8 | Waveform analysis/Doh ray me | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | |||

8 | WiktionaryDumps to words | ① | ② | ③ | ④ | ⑦ | |||||

7 | Autogram checker | ① | ② | ③ | ④ | ⑤ | ⑦ | ⑨ | |||

7 | Boids | ① | ② | ③ | ⑤ | ⑥ | |||||

7 | Chess player | ① | ② | ⑥ | ⑦ | ⑧ | |||||

7 | Convert CSV records to TSV | ① | ② | ③ | ⑨ | ⑩ | |||||

7 | Create an executable for a program in an interpreted language | ① | ② | ③ | ⑤ | ⑨ | |||||

7 | Create your own text control codes | ① | ② | ③ | ④ | ⑩ | |||||

7 | Divide a rectangle into a number of unequal triangles | ① | ② | ③ | ④ | ⑦ | ⑧ | ⑩ | |||

7 | English cardinal anagrams | ① | ② | ③ | ④ | ⑦ | ⑧ | ⑨ | |||

7 | Goodstein Sequence | ① | ② | ③ | ④ | ⑧ | |||||

7 | Latin Squares in reduced form/Randomizing using Jacobson and Matthews' technique | ① | ② | ③ | ④ | ⑤ | ⑥ | ||||

7 | Posit numbers/decoding | ① | ② | ③ | ④ | ⑩ | |||||

7 | Posit numbers/encoding | ① | ② | ③ | ④ | ⑩ | |||||

7 | Process SMIL directives in XML data | ① | ② | ④ | ⑤ | ⑥ | ⑦ | ||||

7 | Red black tree sort | ① | ② | ③ | ⑤ | ⑧ | ⑩ | ||||

7 | Remote agent/Agent interface | ① | ② | ③ | ⑥ | ||||||

7 | Roots of a cubic polynomial | ① | ② | ③ | ④ | ⑨ | |||||

7 | Solve a Rubik's cube | ① | ② | ③ | ④ | ⑤ | ⑥ | ||||

7 | Sturmian word | ① | ③ | ④ | ⑩ | ||||||

7 | Visitor pattern | ① | ② | ③ | ④ | ⑤ | ⑧ | ||||

7 | Wave function collapse | ① | ② | ④ | ⑤ | ⑦ | ⑨ | ||||

6 | CLI-based maze-game | ① | ② | ③ | ⑤ | ||||||

6 | Erdős–Woods numbers | ① | ② | ③ | ④ | ⑧ | |||||

6 | Multiton | ① | ② | ③ | ④ | ⑦ | ⑧ | ||||

6 | OLE automation | ① | ② | ⑥ | ⑧ | O | |||||

6 | Rosetta Code/List authors of task descriptions | ① | ② | ③ | ④ | ⑤ | ⑥ | ||||

6 | Sanitize user input | ① | ② | ③ | ④ | ||||||

6 | Szymański's algorithm | ① | ② | ③ | ④ | ⑩ | |||||

6 | Ukkonen’s suffix tree construction | ① | ② | ③ | ⑤ | ⑥ | |||||

6 | Use a REST API | ① | ② | ⑥ | ⑧ | ||||||

6 | Vidir | ① | ② | ④ | |||||||

6 | Waveform analysis/Top and tail | ① | ② | ③ | ⑤ | ⑥ | ⑩ | ||||

5 | Continued fraction convergents | ① | ② | ③ | ④ | ||||||

5 | Diophantine linear system solving | ① | ② | ⑤ | ⑩ | ||||||

5 | Extended Straddling Checkerboard | ① | ② | ③ | ⑧ | ||||||

5 | Generalised floating point multiplication | ① | ② | ③ | ⑥ | ||||||

5 | Number triplets game | ① | ② | ③ | ⑦ | ||||||

5 | Solving coin problems | ① | ② | ③ | ⑥ | ⑦ | |||||

5 | Unicode polynomial equation | ① | ② | ③ | ⑤ | ⑥ | |||||

5 | Uno (card game) | ① | ② | ③ | ⑧ | ⑩ | |||||

5 | Weather routing | ① | ② | ③ | ⑤ | ⑥ | |||||

4 | 15 puzzle game in 3D | ① | ② | ⑥ | |||||||

4 | Blackjack strategy | ① | ② | ⑤ | ⑥ | ||||||

4 | Color separation | ① | ② | ⑩ | |||||||

4 | Compiler/Preprocessor | ① | ② | ③ | ⑧ | ||||||

4 | Cross compilation | ① | ② | O | O | ⑩ | |||||

4 | Decreasing contiguous subsequences | ① | ④ | ⑧ | |||||||

4 | IRC gateway | ① | ② | ⑥ | |||||||

4 | Protecting Memory Secrets | ① | ② | ③ | ⑨ | ||||||

4 | WebGL rotating F | ① | ② | ③ | ⑨ | ||||||

3 | 3d turtle graphics | ① | ② | ⑨ | |||||||

3 | Elevator simulation | ① | ② |