Rosetta Code/Count examples/Full list/Tier 4

From Rosetta Code
Revision as of 21:28, 14 March 2021 by Thundergnat (talk | contribs) (Update full list output)

Fourth tier of languages sorted by number of examples completed.

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

Top tier Second tier Third tier Fourth tier
Fourth ten programming languages by number of task examples completed:
    ㉛ JavaScript    ㉜ Ring          ㉝ FreeBASIC     ㉞ AutoHotkey    ㉟ F_Sharp      
    ㊱ Clojure       ㊲ ALGOL_68      ㊳ Unicon        ㊴ OCaml         ㊵ PureBasic    
As of 2021-03-14T21:26:20Z :: Tasks: 1097 :: Draft Tasks:237 :: Total Tasks: 1334 :: Total Examples: 74050
Count Task
482 Hello world/Text
320 99 bottles of beer
315 100 doors
312 FizzBuzz
286 Factorial
285 Fibonacci sequence
274 Comments
265 A+B
259 Empty program
238 Function definition
229 Loops/Infinite
225 Loops/While
223 Arrays
223 Reverse a string
220 Ackermann function
206 Loops/For
200 Conditional structures  
197 Greatest common divisor
197 Greatest element of a list
196 Arithmetic/Integer
187 Array concatenation
186 Repeat a string
185 Even or odd
185 Integer comparison
183 Averages/Arithmetic mean
181 Increment a numerical string
177 Hello world/Graphical
173 Copy a string
169 Boolean values
168 Loops/Downward for
168 Sieve of Eratosthenes
166 String concatenation
165 Apply a callback to an array
165 Character codes
164 Loops/Do-while  
164 Loops/N plus one half
163 Hello world/Newline omission
163 Loops/For with a specified step
162 Array length
162 Loops/Foreach
162 Sum and product of an array
161 Binary digits
161 String length
160 Loops/Break  
160 Palindrome detection
159 Integer sequence
159 Towers of Hanoi
158 Sum of a series
157 String case
155 Generic swap
155 Leap year
155 Rot-13
155 Tokenize a string  
154 Dot product
154 Empty string
153 Logical operations
153 Sum of squares
152 Hailstone sequence
150 Filter
149 Associative array/Creation  
148 Quine
147 Sort an integer array
147 Sorting algorithms/Bubble sort
145 Execute a system command
144 Caesar cipher
144 Factors of an integer
143 Guess the number  
143 Roman numerals/Encode
142 Higher-order functions
142 Loop over multiple arrays simultaneously
142 System time
141 Remove duplicate elements
140 Determine if a string is numeric
140 Sorting algorithms/Quicksort
140 User input/Text
139 File input/output
137 Bitwise operations
137 Day of the week
136 Hello world/Standard error
136 Primality by trial division
135 Command-line arguments
135 Luhn test of credit card numbers
135 Read entire file
134 Create a file
133 Loops/Continue
133 Stack
132 Mutual recursion
131 Sleep
131 Substring
130 Generate lower case ASCII alphabet
129 Literals/String  
129 Pascal's triangle
128 Check that file exists
128 Date format
128 Flatten a list
128 Happy numbers
128 Least common multiple
128 Zero to the zero power
127 ABC problem
124 Binary search  
124 Compound data type
124 Program termination
123 Balanced brackets
123 Literals/Integer
122 Detect division by zero
122 Ethiopian multiplication
122 Function composition  
122 Include a file  
122 Variables  
121 Formatted numeric output
121 Loops/Nested  
120 Knuth shuffle
120 N-queens problem
119 Associative array/Iteration  
119 Averages/Root mean square
118 Mandelbrot set
118 Null object
118 Read a file line by line
117 Count occurrences of a substring
117 Roman numerals/Decode
117 Search a list
116 Anagrams
116 Count in octal
116 Hash from two arrays    
116 Multiplication tables
116 Real constants and functions
115 Case-sensitivity of identifiers
115 Delete a file
115 File size
115 Guess the number/With feedback
115 Sorting algorithms/Insertion sort
114 Classes  
113 Align columns  
113 Babbage problem    
113 Environment variables
113 Identity matrix
113 Input loop
113 Matrix multiplication  
113 Matrix transposition
112 Averages/Median
112 Find limit of recursion
112 Pick random element
112 Rename a file
112 String matching
111 Hostname  
111 Letter frequency
111 Random numbers
111 Return multiple values
110 HTTP  
110 Pangram checker
110 Perfect numbers
109 Arithmetic/Complex  
109 Haversine formula
108 Accumulator factory    
108 Assertions  
107 Conway's Game of Life  
107 Infinity    
107 Temperature conversion
106 Catalan numbers
106 Permutations
105 Averages/Pythagorean means
105 Horner's rule for polynomial evaluation
105 Levenshtein distance  
105 Program name
105 Run-length encoding
105 Substring/Top and tail
105 Variadic function      
104 Anonymous recursion  
104 Arithmetic-geometric mean
104 Reverse words in a string  
104 Strip a set of characters from a string
103 Evaluate binomial coefficients
103 Prime decomposition
103 Regular expressions  
103 String append
102 Exceptions    
102 Look-and-say sequence
102 Nth root
102 Sierpinski triangle  
102 Strip whitespace from a string/Top and tail
102 Zig-zag matrix
101 Queue/Definition  
101 String interpolation (included)
101 Trigonometric functions
100 Combinations
100 Comma quibbling  
100 Ordered words
100 Sorting algorithms/Merge sort  
99 Bulls and cows  
99 Shell one-liner  
99 Short-circuit evaluation
97 24 game  
97 Call a function    
97 Create a two-dimensional array at runtime
97 Middle three digits  
97 Sorting algorithms/Selection sort
97 Sum multiples of 3 and 5
96 Arbitrary-precision integers (included)    
96 Interactive programming        
96 Power set
96 Range expansion
96 Range extraction
96 String prepend
96 Y combinator          
94 Collections  
94 Enumerations
94 Sorting algorithms/Gnome sort
94 Sum digits of an integer
93 Digital root  
93 Evolutionary algorithm
93 First-class functions    
93 Time a function  
93 Vector products  
93 Walk a directory/Non-recursively  
92 Averages/Mode  
92 Execute Brain****  
92 Exponentiation operator
92 Inheritance/Single      
92 MD5    
92 Sequence of non-squares
92 Sierpinski carpet  
92 Sorting algorithms/Cocktail sort    
92 The Twelve Days of Christmas  
91 Create an HTML table
91 N'th  
91 One-dimensional cellular automata  
90 Cumulative standard deviation  
90 JSON          
90 Random number generator (included)    
90 Sort using a custom comparator  
89 Averages/Simple moving average
89 Dragon curve    
89 Forward difference
89 Sorting algorithms/Bogosort  
88 Entropy
88 Hello world/Newbie        
88 Langton's ant
88 Monty Hall problem
88 String comparison  
88 Symmetric difference  
87 Gray code  
87 Hamming numbers  
87 Josephus problem    
86 CSV data manipulation
86 Five weekends
86 Harshad or Niven series    
86 Menu  
86 Price fraction
85 Abstract type          
85 Abundant, deficient and perfect number classifications      
85 Greatest subsequential sum
85 Number names  
85 Tree traversal    
84 CSV to HTML translation    
84 Compare a list of strings  
84 Map range  
83 Last Friday of each month      
83 Queue/Usage    
83 Simple windowed application    
83 Sort an array of composite structures
83 Sorting algorithms/Heapsort
83 Walk a directory/Recursively  
83 Window creation
82 Catamorphism  
82 Closures/Value capture      
82 File modification time
82 Hofstadter Q sequence  
82 Non-decimal radices/Convert    
82 SEDOLs
82 Set  
81 Count in factors
81 Monte Carlo methods
81 Number reversal game    
81 Terminal control/Clear the screen      
80 Amicable pairs      
80 Box the compass
80 Calculating the value of e      
80 Introspection  
80 Literals/Floating point        
80 URL decoding    
79 Count the coins  
79 Hello world/Line printer  
79 Long multiplication    
79 Roots of unity    
79 Singly-linked list/Traversal    
79 Terminal control/Ringing the terminal bell      
79 Web scraping    
78 Bitmap    
78 Concurrent computing      
78 Date manipulation    
78 Find common directory path
78 Find the last Sunday of each month  
78 Order two numerical lists  
78 Playing cards    
78 Read a specific line from a file  
78 Show the epoch    
78 Spiral matrix
78 Top rank per group    
78 XML/Input        
77 Address of a variable          
77 CRC-32  
77 Floyd's triangle
77 Jensen's Device    
77 Knapsack problem/0-1        
77 Linear congruential generator      
77 Multifactorial      
77 Operator precedence    
77 Proper divisors    
77 Sockets        
77 Sorting algorithms/Counting sort    
77 Sorting algorithms/Shell sort    
77 Word wrap  
76 Call an object method        
76 Here document      
76 Keyboard input/Obtain a Y or N response  
76 Pythagorean triples  
76 Strip comments from a string
76 URL encoding    
75 Almost prime  
75 Dynamic variable names          
75 Find the missing permutation    
75 Kaprekar numbers    
75 Lucas-Lehmer test      
75 Man or boy test        
75 Munchausen numbers      
75 Repeat      
74 Anagrams/Deranged anagrams
74 Averages/Mean angle  
74 Calendar    
74 List comprehensions    
74 Modular inverse
74 Non-decimal radices/Output
74 Parsing/RPN calculator algorithm      
74 SHA-1      
74 Semordnilap  
74 Sorting algorithms/Comb sort      
73 Equilibrium index  
73 Fibonacci n-step number sequences  
73 Gamma function  
73 Hello world/Web server          
73 Population count      
73 Read a configuration file        
73 Soundex  
73 Split a character string based on change of character      
73 Unicode variable names      
72 Animation    
72 Empty directory    
72 Exceptions/Catch an exception thrown in a nested call        
72 Execute HQ9+  
72 Multiple distinct objects    
72 Phrase reversals      
72 Pi  
72 SHA-256    
72 Singly-linked list/Element definition    
72 Sudoku    
72 Write entire file    
71 AKS test for primes      
71 Convert seconds to compound duration  
71 Longest common subsequence
71 Show ASCII table      
71 Special characters      
71 Take notes on the command line      
70 Bitmap/Bresenham's line algorithm  
70 Call a foreign-language function        
70 Currying        
70 Enforced immutability  
70 Polymorphism      
70 Rock-paper-scissors  
70 Sort disjoint sublist      
70 Vigenère cipher  
70 Zeckendorf number representation    
69 Combinations with repetitions    
69 Constrained random points on a circle
69 Draw a sphere          
69 Euler's sum of powers conjecture      
69 Flow-control structures      
69 Four bit adder      
69 Guess the number/With feedback (player)    
69 IBAN    
69 Largest int from concatenated ints  
69 Quaternion type      
69 Self-describing numbers      
69 Stair-climbing puzzle      
69 Write float arrays to a text file      
68 15 puzzle game      
68 Catalan numbers/Pascal's triangle    
68 Closest-pair problem  
68 Euler method  
68 Extend your language          
68 Horizontal sundial calculations    
68 Jump anywhere            
68 Maze generation    
68 Numerical integration      
68 Old lady swallowed a fly            
68 Priority queue      
68 Sorting algorithms/Stooge sort  
68 Trabb Pardo–Knuth algorithm    
67 Fork          
67 Fractal tree  
67 Magic squares of odd order        
67 Nested function        
67 Text processing/Max licenses in use      
66 Arithmetic/Rational        
66 Benford's law  
66 Chinese remainder theorem      
66 Fast Fourier transform              
66 Named parameters        
66 One of n lines in a file  
66 Runtime evaluation            
66 Sort stability    
66 Special variables      
65 Amb  
65 Documentation      
65 General FizzBuzz      
65 HTTPS          
65 Morse code      
65 Narcissistic decimal number    
65 Optional parameters      
65 Remove lines from a file  
65 Roots of a function    
65 Sorting algorithms/Pancake sort
65 Strip control codes and extended characters from a string
65 Unix/ls            
65 Variable size/Get      
64 Barnsley fern        
64 Continued fraction      
64 Hofstadter-Conway $10,000 sequence  
64 Inheritance/Multiple        
64 Pernicious numbers      
64 Sequence of primes by trial division        
64 XML/Output        
63 Anti-primes          
63 Memory allocation          
63 Reduced row echelon form        
63 Roots of a quadratic function      
63 Singly-linked list/Element insertion    
63 Write language name in 3D ASCII      
62 Animate a pendulum      
62 Cholesky decomposition      
62 Circles of given radius through two points        
62 Exponentiation order          
62 Factors of a Mersenne number      
62 Globally replace text in several files        
62 Mouse position  
62 Non-decimal radices/Input  
62 Probabilistic choice  
62 Rep-string    
62 Runge-Kutta method      
62 Semiprime      
62 Thue-Morse        
62 Undefined values      
61 Angle difference between two bearings          
61 Averages/Mean time of day        
61 Department numbers      
61 Get system command output          
61 Sorting algorithms/Sleep sort          
61 Van der Corput sequence      
60 Arithmetic evaluation    
60 Best shuffle      
60 Binary strings        
60 Knapsack problem/Continuous          
60 Modular exponentiation      
60 Partial function application        
60 Plot coordinate pairs    
60 Tic-tac-toe          
59 24 game/Solve        
59 9 billion names of God the integer        
59 Draw a clock      
59 Dutch national flag problem      
59 Generator/Exponential        
59 Host introspection      
59 Huffman coding      
59 Jewels and stones        
59 Knapsack problem/Unbounded        
59 Sort three variables      
59 Test a function    
59 Unicode strings              
59 Word frequency      
58 Bitmap/Write a PPM file              
58 Brownian tree      
58 Compile-time calculation          
58 Damm algorithm      
58 Emirp primes      
58 Hash join        
58 Knight's tour        
58 Miller–Rabin primality test    
58 Odd word problem    
58 Truncatable primes      
58 User input/Graphical        
58 Yin and yang      
57 2048      
57 4-rings or 4-squares puzzle          
57 Add a variable to a class instance at runtime            
57 Deal cards for FreeCell      
57 Delegates            
57 Draw a cuboid        
57 I before E except after C      
57 Integer overflow          
57 JortSort    
57 Left factorials        
57 Leonardo numbers        
57 Matrix-exponentiation operator            
57 Random number generator (device)          
57 Scope modifiers          
57 Sorting algorithms/Bead sort        
57 Two sum    
56 Cartesian product of two or more lists        
56 DNS query            
56 Dinesman's multiple-dwelling problem  
56 Discordian date        
56 Doubly-linked list/Element definition      
56 Extract file extension        
56 Fibonacci word  
56 LZW compression        
56 Longest common prefix          
56 Ludic numbers    
56 Mad Libs        
56 Rosetta Code/Rank languages by popularity        
56 Singleton              
56 Stem-and-leaf plot  
56 Stern-Brocot sequence      
56 Terminal control/Coloured text        
56 Terminal control/Display an extended character            
56 Truncate a file      
55 100 prisoners            
55 Base64 encode data            
55 Define a primitive data type          
55 Extreme floating point values        
55 Forest fire
55 Long year          
55 Modulinos          
55 Multisplit      
55 Munching squares          
55 Sorting algorithms/Permutation sort      
55 Stack traces        
55 Topological sort          
54 CUSIP        
54 Draw a pixel      
54 Grayscale image          
54 Quickselect algorithm    
54 Runtime evaluation/In an environment          
54 Sierpinski triangle/Graphical        
54 Subleq                  
54 Synchronous concurrency        
54 Terminal control/Cursor positioning        
54 XML/XPath              
53 Abundant odd numbers        
53 Convert decimal number to rational          
53 Handle a signal        
53 Maximum triangle path sum        
53 Non-continuous subsequences    
53 Pointers and references        
53 Send email          
53 Ternary logic        
53 Unbias a random generator      
53 XML/DOM serialization            
52 Bernoulli numbers          
52 First-class functions/Use numbers analogously          
52 Inverted syntax            
52 Iterated digits squaring          
52 Keyboard input/Keypress check      
52 Longest increasing subsequence        
52 Statistics/Basic            
52 Text processing/2      
51 Call a function in a shared library            
51 Determine if a string has all the same characters    
51 Dining philosophers            
51 FASTA format        
51 Gaussian elimination          
51 Longest common substring          
51 Loops/Increment loop index within loop body            
51 Magic 8-ball      
51 Move-to-front algorithm      
51 Seven-sided dice from five-sided dice    
51 Wireworld      
50 Archimedean spiral        
50 Attractive numbers            
50 Base64 decode data              
50 Chinese zodiac      
50 Colour bars/Display        
50 Determine if a string is collapsible      
50 Dijkstra's algorithm    
50 Farey sequence              
50 GUI component interaction          
50 Heronian triangles          
50 Make directory path          
50 Polynomial regression                
50 Respond to an unknown method call              
50 Sattolo cycle        
50 Smith numbers      
50 Strip block comments        
50 Universal Turing machine            
50 Validate International Securities Identification Number            
50 Vector            
49 Find the intersection of two lines      
49 Fractran        
49 Holidays related to Easter              
49 Last letter-first letter            
49 Pig the dice game          
49 Rate counter            
49 Shoelace formula for polygonal area          
49 Text processing/1      
48 Copy stdin to stdout          
48 Determinant and permanent                  
48 Doubly-linked list/Element insertion        
48 Doubly-linked list/Traversal        
48 Greyscale bars/Display      
48 Jaro distance            
48 Kernighans large earthquake problem                
48 Metaprogramming            
48 Naming conventions              
48 Pascal matrix generation            
48 Perfect shuffle          
48 Polymorphic copy          
48 Search a list of records          
48 Tokenize a string with escaping          
48 Zebra puzzle            
47 Append a record to the end of a text file                
47 Chaos game            
47 Echo server          
47 Extensible prime generator      
47 History variables            
47 ISBN13 check digit          
47 Kronecker product          
47 Longest string challenge      
47 Password generator          
47 RPG attributes generator            
47 Square but not cube        
47 Stable marriage problem        
46 Average loop length            
46 Bitmap/Flood fill              
46 Determine if only one instance is running        
46 Egyptian division        
46 Narcissist            
46 Polynomial long division              
46 Set consolidation        
46 Sort numbers lexicographically              
46 Water collected between towers            
45 Active object            
45 Associative array/Merging    
45 Determine if a string has all unique characters      
45 Execute a Markov algorithm        
45 Hofstadter Figure-Figure sequences          
45 Image noise        
45 McNuggets problem        
45 OpenGL      
45 Parsing/Shunting-yard algorithm        
45 Send an unknown method call                
45 Verify distribution uniformity/Naive      
44 Bulls and cows/Player              
44 Carmichael 3 strong pseudoprimes        
44 Doubly-linked list/Definition      
44 Element-wise operations                
44 Elementary cellular automaton            
44 GUI/Maximum window dimensions          
44 Generate Chess960 starting position            
44 Rosetta Code/Count examples      
44 Sparkline in unicode            
44 Ulam spiral (for primes)              
44 Visualize a tree          
43 Atomic updates          
43 Bitmap/Read a PPM file              
43 Hickerson series of almost integers            
43 Keyboard input/Flush the keyboard buffer            
43 Knapsack problem/Bounded              
43 MD5/Implementation              
43 Sorting algorithms/Radix sort            
43 Subtractive generator          
42 Aliquot sequence classifications              
42 Cantor set            
42 Currency        
42 Digital root/Multiplicative digital root            
42 Nim game            
42 Percentage difference between images        
42 Spinning rod animation/Text              
42 Sum to 100            
42 Terminal control/Dimensions          
42 Twelve statements                
42 Van Eck sequence            
42 Voronoi diagram      
41 Balanced ternary            
41 Bitmap/Midpoint circle algorithm          
41 Calendar - for "REAL" programmers          
41 Combinations and permutations              
41 Deepcopy          
41 Fusc sequence          
41 Gapful numbers            
41 Hilbert curve          
41 Parallel calculations            
41 Pascal's triangle/Puzzle          
41 Permutations/Derangements          
41 Problem of Apollonius          
41 Remove vowels from a string        
41 S-expressions          
41 Sorting Algorithms/Circle Sort                
41 Speech synthesis            
41 Start from a main routine        
41 Table creation/Postal addresses            
41 Taxicab numbers            
41 Text between            
41 Truth table              
41 Variable size/Set            
40 Casting out nines              
40 Color of a screen pixel      
40 Euler's identity              
40 Flipping bits game          
40 GUI enabling/disabling of controls            
40 Inverted index          
40 Secure temporary file            
40 Sorting algorithms/Strand sort          
40 Summarize and say sequence            
40 Variable-length quantity              
39 Abbreviations, automatic                  
39 Brace expansion                
39 Colour pinstripe/Display        
39 Cramer's rule                
39 Create a file on magnetic tape            
39 Fivenum                  
39 Julia set            
39 Knuth's algorithm S            
39 Magic squares of doubly even order              
39 Musical scale          
39 Order disjoint list items              
39 Parametric polymorphism              
39 Parsing/RPN to infix conversion          
39 Permutations by swapping          
39 Prime conspiracy              
39 The Name Game            
39 Topswops                  
39 UTF-8 encode and decode              
38 Brazilian numbers              
38 Break OO privacy            
38 Constrained genericity                
38 Feigenbaum constant calculation              
38 Kahan summation              
38 LU decomposition                  
38 Metered concurrency                
38 Permutation test                  
38 Permutations with repetitions            
38 Primorial numbers            
38 Pythagorean quadruples            
38 Recaman's sequence              
38 Sailors, coconuts and a monkey problem              
38 Scope/Function names and labels              
38 Sort a list of object identifiers                
38 Statistics/Normal distribution                
37 Abbreviations, easy              
37 Bell numbers              
37 Chowla numbers                  
37 Cuban primes            
37 Days between dates                  
37 File extension is in extensions list              
37 Find palindromic numbers in both binary and ternary bases            
37 Function prototype      
37 Input/Output for lines of text              
37 Input/Output for pairs of numbers            
37 Long primes                
37 Loops/Wrong ranges                  
37 Lychrel numbers              
37 MAC Vendor Lookup              
37 MD4            
37 Metronome            
37 Object serialization                
37 QR decomposition                    
37 Ray-casting algorithm          
37 Read a file character by character/UTF8                
37 Terminal control/Hiding the cursor              
37 Terminal control/Inverse video            
37 Vampire number        
36 21 game            
36 Abbreviations, simple              
36 Bitwise IO            
36 Convex hull                  
36 Events          
36 Fibonacci word/fractal          
36 Floyd-Warshall algorithm              
36 Largest number divisible by its digits                
36 Maze solving          
36 Minesweeper game          
36 Numerical integration/Gauss-Legendre Quadrature                
36 Pathological floating point problems          
36 Ranking methods                
36 Solve the no connection puzzle                
36 Substitution cipher                
36 Terminal control/Unicode output                
35 Approximate equality                  
35 Arithmetic-geometric mean/Calculate Pi                
35 Bitmap/Bézier curves/Cubic        
35 Check output device is a terminal                  
35 Display a linear combination              
35 Egyptian fractions                
35 Find the intersection of a line with a plane                  
35 Humble numbers              
35 Idiomatically determine all the lowercase and uppercase letters            
35 Loops/With multiple ranges                
35 Multiline shebang              
35 Multiple regression                  
35 Ordered partitions                
35 Penney's game                
35 Pentagram                
35 Pinstripe/Display          
35 RIPEMD-160                
35 Square-free integers                
35 Sutherland-Hodgman polygon clipping              
35 Test integerness                  
34 Conjugate transpose                  
34 Determine if a string is squeezable            
34 Entropy/Narcissist              
34 Isqrt (integer square root) of X              
34 Parametrized SQL statement              
34 Pattern matching              
34 Totient function                  
33 Cheryl's birthday                
33 Continued fraction/Arithmetic/Construct from rational number              
33 Executable library                
33 Factorions          
33 Integer roots                  
33 Mertens function                
33 Mutex                
33 Negative base numbers              
33 Old Russian measure of length                
33 Parse command-line arguments            
33 Partition an integer x into n primes                
33 RSA code            
33 Rosetta Code/Find bare lang tags                  
33 Solve a Hidato puzzle                  
33 Subset sum problem              
33 Topic variable              
32 Bitcoin/address validation                
32 Bitmap/Bézier curves/Quadratic              
32 Check input device is a terminal                
32 Church numerals              
32 Decimal floating point number to binary              
32 Eban numbers                
32 Execute SNUSP        
32 Galton box animation            
32 Lah numbers                  
32 Multi-dimensional array              
32 Multiplicative order                
32 Primality by Wilson's theorem              
32 Pythagoras tree          
32 Resistor mesh                  
32 Safe primes and unsafe primes            
32 Set puzzle                
32 Sorting algorithms/Patience sort              
32 Straddling checkerboard        
32 Type detection                
31 Apply a digital filter (direct form II transposed)                  
31 Bioinformatics/base count          
31 Bitmap/Histogram                
31 Cycle detection                  
31 Determine if two triangles overlap                
31 Faulhaber's formula                    
31 Faulhaber's triangle              
31 First class environments                
31 Four is magic            
31 Keyboard macros        
31 Numeric error propagation            
31 Palindrome dates          
31 Reflection/List properties                  
31 Rosetta Code/Find unimplemented tasks          
31 Set of real numbers                
31 Terminal control/Cursor movement                  
31 Textonyms                
31 URL parser              
31 Use another language to call a function                
31 Write to Windows event log            
30 Chaocipher                
30 Check Machin-like formulas              
30 Checkpoint synchronization                
30 Deconvolution/1D                    
30 Dice game probabilities                  
30 Draw a rotating cube            
30 FTP                    
30 HTTPS/Authenticated                
30 Implicit type conversion                  
30 Koch curve            
30 Mersenne primes                  
30 Mian-Chowla sequence            
30 Modular arithmetic                  
30 Parallel brute force              
30 Perfect totient numbers              
30 Poker hand analyser            
30 Sequence: smallest number with exactly n divisors          
30 Simple database                    
30 Terminal control/Preserve screen                  
30 Window creation/X11              
30 Xiaolin Wu's line algorithm              
30 Zhang-Suen thinning algorithm              
29 Arena storage pool                    
29 Bacon cipher                  
29 Chat server                  
29 Death Star                
29 Decision tables          
29 Diversity prediction theorem                
29 Gauss-Jordan matrix inversion                  
29 Jacobi symbol                
29 Memory layout of a data structure              
29 Pragmatic directives                
29 Sequence: smallest number greater than previous term with exactly n divisors            
29 Stream merge                  
29 Word break problem                
28 AVL tree                    
28 Chemical calculator                    
28 Compiler/lexical analyzer                
28 Extra primes              
28 Find first and last set bit of a long integer              
28 Find largest left truncatable prime in a given base                  
28 Formal power series                  
28 Honeycombs              
28 Ramsey's theorem                
28 Rosetta Code/Fix code tags          
28 Smarandache prime-digital sequence            
28 Sorting algorithms/Cycle sort                
28 State name puzzle                
28 Strong and weak primes                
28 Sum and product puzzle                  
28 Super-d numbers                
28 Update a configuration file                
28 Verify distribution uniformity/Chi-squared test                  
27 Active Directory/Connect                
27 Angles (geometric), normalization and conversion                  
27 Burrows–Wheeler transform                    
27 Chebyshev coefficients                    
27 Create an object at a given address              
27 Cut a rectangle                    
27 First power of 2 that has leading decimal digits of 12                
27 Go Fish          
27 Law of cosines - triples              
27 Machine code                
27 Natural sorting                  
27 Nautical bell                
27 Palindromic gapful numbers              
27 Paraffins                  
27 Peano curve                
27 Polyspiral                
27 Reflection/List methods              
27 Safe addition                  
27 Sexy primes              
27 Superellipse                
27 Weird numbers                  
27 World Cup group stage                    
27 Yellowstone sequence                
26 Birthday problem                  
26 Card shuffles                    
26 Distributed programming              
26 Fairshare between two and more                
26 First perfect square in base n with n unique digits              
26 Image convolution                
26 Kronecker product based fractals                  
26 N-smooth numbers                    
26 Nonoblock                  
26 Numbers with prime digits whose sum is 13            
26 Perlin noise                
26 Ramer-Douglas-Peucker line simplification                  
26 Range consolidation              
26 Same fringe              
26 Solve a Holy Knight's tour                
26 Table creation                  
26 The ISAAC Cipher                  
26 Thiele's interpolation formula                
26 Zumkeller numbers                  
25 A* search algorithm              
25 Abelian sandpile model                
25 Color wheel                    
25 Elliptic curve arithmetic                  
25 Fermat numbers                  
25 Fraction reduction                    
25 Generate random chess position                  
25 Idiomatically determine all the characters that can be used for symbols                  
25 Intersecting number wheels              
25 Length of an arc between two angles              
25 Magic squares of singly even order                  
25 Minimum positive multiple in base 10 using only 0 and 1              
25 Möbius function            
25 RCRPG            
25 Sequence of primorial primes              
25 Stirling numbers of the first kind              
25 Stirling numbers of the second kind                
25 Successive prime differences                  
25 Tonelli-Shanks algorithm                
25 Welch's t-test                    
25 Yahoo! search interface                  
24 Audio alarm            
24 Cipolla's algorithm                
24 Circular primes                
24 Function frequency                    
24 Hough transform                    
24 K-means++ clustering                  
24 List rooted trees                
24 Mind boggling card trick              
24 Monads/Maybe monad            
24 Parse an IP Address                  
24 Pell's equation                
24 Plasma effect              
24 Play recorded sounds              
24 Sierpinski pentagon                  
24 Simulate input/Keyboard            
24 Tau number            
24 Unprimeable numbers                    
23 Base58Check encoding                  
23 Create an object/Native demonstration                
23 Deming's Funnel                    
23 Elementary cellular automaton/Random Number Generator                  
23 Finite state machine                  
23 Fixed length records                    
23 Hunt the Wumpus              
23 Kolakoski sequence                    
23 Linux CPU utilization                  
23 Longest common suffix            
23 Lucky and even lucky numbers                
23 Main step of GOST 28147-89                  
23 Make a backup file                  
23 Markov chain text generator                  
23 Mayan numerals                
23 Next highest int from digits              
23 Numbers with equal rises and falls              
23 Percolation/Mean run density                  
23 Permutations/Rank of a permutation                
23 Record sound                
23 Reverse the gender of a string                
23 SOAP            
23 Superpermutation minimisation                  
23 Teacup rim text                
23 Total circles area                    
23 Video display modes                
23 Words containing "the" substring              
22 Active Directory/Search for a user                    
22 Alternade words                
22 Commatizing numbers                  
22 Find duplicate files                  
22 Find words with alternating vowels and consonants            
22 Increasing gaps between consecutive Niven numbers                    
22 Matrix chain multiplication                    
22 Pierpont primes                
22 Playfair cipher                  
22 Pseudo-random numbers/PCG32                
22 Shortest common supersequence                  
22 Snake and Ladder                  
22 Solve a Hopido puzzle                  
22 Sorting algorithms/Cocktail sort with shifting bounds                    
22 Spelling of ordinal numbers                
22 Sum of divisors              
22 Tau function              
21 ASCII art diagram converter                  
21 Data Encryption Standard                  
21 De Bruijn sequences                    
21 Esthetic numbers              
21 Joystick position              
21 Kosaraju                    
21 Long literals, with continuations                  
21 Magnanimous numbers                
21 Mastermind              
21 Median filter                  
21 Monads/List monad            
21 Native shebang                
21 Numeric separator syntax                
21 Orbital elements                    
21 Pig the dice game/Player                  
21 Random Latin squares              
21 Reflection/Get source            
21 Sokoban                
21 Solve a Numbrix puzzle                  
21 Strange plus numbers                
21 Window management            
21 Word wheel                
20 Addition chains                    
20 Assertions in design by contract                  
20 Bitcoin/public point to address                    
20 Eertree                  
20 Find words which contains more than 3 e vowels              
20 Index finite lists of positive integers                  
20 Levenshtein distance/Alignment                    
20 Pseudo-random numbers/Xorshift star                
20 Sum data type                
20 UPC                  
20 Vigenère cipher/Cryptanalysis                  
20 Vogel's approximation method                    
19 Abelian sandpile model/Identity                
19 Bilinear interpolation                    
19 Bioinformatics/Sequence mutation                  
19 Cistercian numerals                  
19 Code segment unload                    
19 Color quantization                
19 Elementary cellular automaton/Infinite length                    
19 K-d tree                    
19 Knuth's power tree                  
19 Line circle intersection                    
19 Montgomery reduction                    
19 N-body problem                    
19 Names to numbers                    
19 P-value correction                    
19 Padovan sequence                
19 Pancake numbers                
19 Perceptron                  
19 Print debugging statement                    
19 Readline interface                    
19 Simulate input/Mouse              
19 Sunflower fractal              
19 Untrusted environment                    
18 15 puzzle solver                  
18 ABC words              
18 Arithmetic coding/As a generalized change of radix                  
18 Bin given limits                    
18 Canonicalize CIDR                  
18 Compiler/code generator                  
18 Draw pixel 2              
18 EKG sequence convergence                  
18 File size distribution                    
18 Find URI in text                  
18 Imaginary base numbers                    
18 Metallic ratios                  
18 Monads/Writer monad                
18 Nimber arithmetic                  
18 Odd words              
18 Percolation/Site percolation                    
18 Primes - allocate descendants to their ancestors                  
18 SQL-based authentication                    
18 Selective file copy                  
18 Self numbers                
18 Sierpinski arrowhead curve                  
18 Solve triangle solitare puzzle                    
18 Transportation problem                    
18 Twin primes              
18 Ulam numbers                
17 Bitmap/Read an image through a pipe                
17 Change e letters to i in words            
17 Compiler/virtual machine interpreter                    
17 Find if a point is within a triangle                    
17 Just in time processing on a character stream                    
17 Matrix digital rain                    
17 Most frequent k chars distance                
17 NYSIIS                    
17 Nested templated data                    
17 Nonogram solver                  
17 Polynomial synthetic division                    
17 Prime words              
17 Product of divisors                
17 Proof                  
17 Separate the house number from the street name                    
17 Strange unique prime triplets                
17 Zeckendorf arithmetic                    
16 Aspect oriented programming                
16 Biorhythms                    
16 Bitmap/PPM conversion through a pipe                  
16 Changeable words                
16 Chernick's Carmichael numbers                  
16 Free polyominoes enumeration                    
16 HTTPS/Client-authenticated                    
16 Latin Squares in reduced form                  
16 Particle swarm optimization                  
16 Partition function P                    
16 Percolation/Bond percolation                    
16 Percolation/Mean cluster density                    
16 Pseudo-random numbers/Splitmix64                  
16 Rare numbers                
16 Self-hosting compiler                  
16 Strange numbers                
16 Tarjan                    
16 Terminal control/Positional read                  
16 Vibrating rectangles                
16 Word search                    
15 Calkin-Wilf sequence                
15 Compiler/syntax analyzer                    
15 Cyclotomic polynomial                    
15 Exponentiation with infix operators in (or operating on) the base                
15 Find words which contains all the vowels              
15 Four is the number of letters in the ...                    
15 Functional coverage tree                  
15 Geometric algebra                  
15 Getting the number of decimals                
15 Merge and aggregate datasets                  
15 Numerical integration/Adaptive Simpson's method                    
15 OpenWebNet password                  
15 Peaceful chess queen armies                    
15 Rendezvous                
15 Retrieve and search chat history                  
15 Sequence: nth number with exactly n divisors                  
15 Singly-linked list/Element removal                  
15 Snake              
15 Square root by hand                
15 Suffix tree                  
15 Words from neighbour ones                
14 Compare sorting algorithms' performance                  
14 Compiler/AST interpreter                    
14 Find words which first and last three letters are equals              
14 Generalised floating point addition                  
14 Gradient descent                  
14 Jaro-Winkler distance                
14 Logistic curve fitting in epidemiology                    
14 Permutations with some identical elements                    
14 Ramanujan's constant                    
14 Topological sort/Extracted top item                    
14 XML validation                  
13 Banker's algorithm                    
13 Deconvolution/2D+                    
13 Factorial base numbers indexing permutations of a collection                  
13 Find words which contains most consonants                
13 Nice primes                  
13 Pisano period                    
13 SHA-256 Merkle tree                    
13 Sine wave                
12 Canny edge detector                    
12 Common sorted list                
12 Continued fraction/Arithmetic/G(matrix ng, continued fraction n)                    
12 Greed                    
12 Interactive help                    
12 Longest palindromic substrings                
12 Minimal steps down to 1                    
12 Print itself                  
12 Safe mode                    
12 Sierpinski curve                  
12 Simulated annealing                    
12 Sorting algorithms/Tree sort on a linked list                    
12 Tetris                  
12 Two bullet roulette                    
12 VList                    
12 XXXX redacted                    
11 Almkvist-Giullera formula for pi                    
11 Audio frequency generator                  
11 Checksumcolor                
11 Common list elements                
11 Find first missing positive                
11 Geohash                  
11 Launch rocket with countdown and acceleration in stdout                  
11 Minkowski question-mark function                  
11 One-time pad                    
11 Pentomino tiling                    
11 Railway circuit                    
11 Resistance calculator                    
11 Run as a daemon or service                    
11 Sierpinski square curve                    
11 Text completion                    
11 Tree from nesting levels                    
11 Using a speech engine to highlight words                
10 Catmull–Clark subdivision surface                  
10 Colour pinstripe/Printer                    
10 Combinations with repetitions/Square digit chain                    
10 Execute CopyPasta Language                    
10 External sort                    
10 Faces from a mesh                    
10 Modified random distribution                    
10 Non-transitive dice                  
10 Penrose tiling                    
10 Powerful numbers                    
10 Pseudo-random numbers/Combined recursive generator MRG32k3a                    
10 Shift list elements to left by 3                
10 Spoof game                  
10 Three word location                    
10 Time-based one-time password algorithm                    
10 Unit testing                    
9 Curve that touches three points                  
9 Display an outline as a nested table                  
9 Fibonacci matrix-exponentiation                    
9 French Republican calendar                  
9 Graph colouring                    
9 Hourglass puzzle                    
9 IPC via named pipe                    
9 Morpion solitaire                  
9 Parse EBNF                    
9 Pinstripe/Printer                    
9 Quoting constructs                  
9 Range modifications                  
9 Resistance network calculator                    
9 Rosetta Code/Tasks without examples                    
9 Starting a web browser                    
9 Suffixation of decimal numbers                    
9 Text to HTML                    
9 Tree datastructures                    
9 Untouchable numbers                  
9 User defined pipe and redirection operators                  
9 War card game                    
8 Count the coins/0-1                    
8 Elliptic Curve Digital Signature Algorithm                  
8 Multidimensional Newton-Raphson method                    
8 Numerical and alphabetical suffixes                    
8 Pseudorandom number generator image                    
8 Rosetta Code/Rank languages by number of users                    
8 Sort an outline at every level                  
7 16 puzzle game                
7 Brace expansion using ranges                  
7 Compiler/Verifying syntax                    
7 Fibonacci heap                    
7 Mayan calendar                    
7 P-Adic numbers, basic                  
7 Padovan n-step number sequences                  
7 Recursive descent parser generator                    
7 Robots                    
7 Square Form Factorization                  
7 URL shortener                    
6 Bioinformatics/global alignment                    
6 Continued fraction/Arithmetic/G(matrix ng, continued fraction n1, continued fraction n2)                    
6 Doubly-linked list/Element removal                    
6 I'm a software engineer, get me out of here                  
6 OpenGL pixel shader                  
6 OpenGL/Utah Teapot                    
6 Price list behind API                    
6 Random sentence from book                  
6 Remote agent/Agent logic                    
6 Remote agent/Simulation                    
6 Rosetta Code/Run examples                    
6 Smallest enclosing circle problem                    
6 Terminal control/Restricted width positional input/No wrapping                    
6 Terminal control/Restricted width positional input/With wrapping                    
5 Addition-chain exponentiation                    
5 Audio overlap loop                  
5 Black Box                  
5 Boids                    
5 Chess player                    
5 Hexapawn                  
5 P-Adic square roots                  
5 Process SMIL directives in XML data                    
5 Raster bars                    
5 Remote agent/Agent interface                    
5 Solve a Rubik's Cube                    
5 Strassen's algorithm                    
5 Tamagotchi emulator                    
5 Waveform analysis/Doh ray me                    
4 Generalised floating point multiplication                  
4 OLE automation                  
4 Unicode polynomial equation                    
4 Using the Meetup.com API                  
4 Weather routing                    
4 WiktionaryDumps to words                  
3 Latin Squares in reduced form/Randomizing using Jacobson and Matthews’ Technique                  
3 Rosetta Code/List authors of task descriptions                    
3 Solving coin problems                    
3 Ukkonen’s suffix tree construction                    
3 Vidir                    
3 Waveform analysis/Top and tail                    
2 15 puzzle game in 3D                  
2 CLI-based maze-game                    
2 IRC gateway                    
1 Blackjack strategy