Rosetta Code/Count examples/Full list/Tier 4

Revision as of 20:05, 20 June 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 Ring          ㉜ Common_Lisp   ㉝ JavaScript    ㉞ AutoHotkey    ㉟ F_Sharp      
    ㊱ ALGOL_68      ㊲ Delphi        ㊳ Clojure       ㊴ PureBasic     ㊵ AWK          
As of 2021-06-20T20:02:40Z :: Tasks: 1106 :: Draft Tasks:282 :: Total Tasks: 1388 :: Total Examples: 77403
Count Task
492 Hello world/Text
324 99 bottles of beer
317 100 doors
317 FizzBuzz
295 Fibonacci sequence
288 Factorial
276 Comments
268 A+B
262 Empty program
239 Function definition
229 Loops/Infinite
226 Arrays
226 Reverse a string
225 Loops/While
222 Ackermann function
206 Loops/For
203 Conditional structures  
200 Greatest common divisor
198 Arithmetic/Integer
197 Greatest element of a list
189 Array concatenation
187 Even or odd
185 Integer comparison
185 Repeat a string
184 Averages/Arithmetic mean
183 Increment a numerical string
178 Hello world/Graphical
173 Copy a string
173 Sieve of Eratosthenes
170 Boolean values
168 Binary digits
168 Loops/Downward for
168 String concatenation
167 Character codes
166 Apply a callback to an array
166 Array length
166 Towers of Hanoi
164 Hello world/Newline omission
164 Loops/Do-while  
164 Loops/N plus one half
164 Palindrome detection
164 Sum and product of an array
163 Loops/For with a specified step
163 Loops/Foreach
163 String length
162 Integer sequence
162 Sum of a series
161 String case
161 Tokenize a string
160 Loops/Break  
158 Rot-13
156 Dot product
155 Generic swap
155 Leap year
155 Sum of squares
154 Empty string
154 Hailstone sequence
154 Logical operations
153 Filter
153 Quine  
150 Associative array/Creation
150 Sort an integer array
150 Sorting algorithms/Bubble sort
147 Execute a system command
146 Roman numerals/Encode
145 Factors of an integer
144 Caesar cipher
144 System time
143 Guess the number  
143 Loop over multiple arrays simultaneously
143 Remove duplicate elements
142 Determine if a string is numeric
142 Higher-order functions  
141 Sorting algorithms/Quicksort  
141 User input/Text
140 File input/output
139 Luhn test of credit card numbers  
137 Bitwise operations
137 Day of the week
137 Primality by trial division
136 Hello world/Standard error
135 Command-line arguments
135 Read entire file
134 Create a file
134 Happy numbers
134 Mutual recursion
134 Stack  
134 Substring
134 Zero to the zero power
133 Loops/Continue
132 Check that file exists
132 Sleep
131 Generate lower case ASCII alphabet
131 Pascal's triangle
130 Least common multiple
129 ABC problem
129 Literals/String  
128 Date format
128 Flatten a list    
126 Balanced brackets
126 Variables
125 Ethiopian multiplication
125 Program termination
124 Binary search
124 Compound data type
124 Include a file  
123 Formatted numeric output
123 Function composition  
123 Literals/Integer
123 Mandelbrot set
122 Detect division by zero  
122 Roman numerals/Decode
121 Associative array/Iteration
121 Count occurrences of a substring
121 Loops/Nested  
120 Averages/Root mean square
120 Count in octal
120 Knuth shuffle
120 N-queens problem
120 Null object
119 Read a file line by line
119 Sorting algorithms/Insertion sort
118 Haversine formula
117 Multiplication tables
117 Search a list
116 Anagrams
116 Guess the number/With feedback
116 Hash from two arrays  
116 Identity matrix
116 Matrix transposition
116 Pick random element
116 Real constants and functions
115 Babbage problem  
115 Case-sensitivity of identifiers
115 Delete a file
115 File size
115 Letter frequency
115 Matrix multiplication  
114 Averages/Median
114 Classes  
114 Find limit of recursion
114 Rename a file
114 String matching
113 Align columns  
113 Environment variables
113 Input loop
113 Perfect numbers
112 Pangram checker
112 Random numbers
112 Return multiple values  
111 HTTP
111 Hostname  
111 Look-and-say sequence
110 Arithmetic/Complex    
109 Assertions  
109 Catalan numbers
109 Conway's Game of Life  
108 Accumulator factory      
108 Infinity    
108 Temperature conversion
107 Sierpinski triangle
107 Strip a set of characters from a string
107 Substring/Top and tail
107 Variadic function    
106 Arithmetic-geometric mean
106 Averages/Pythagorean means
106 Evaluate binomial coefficients
106 Horner's rule for polynomial evaluation  
106 Levenshtein distance  
106 Permutations
106 Run-length encoding
105 Prime decomposition
105 Program name
105 String append
104 Anonymous recursion      
104 Reverse words in a string  
104 Strip whitespace from a string/Top and tail
104 Zig-zag matrix  
103 Bulls and cows  
103 Comma quibbling  
103 Regular expressions
103 String interpolation (included)
102 Combinations
102 Exceptions    
102 Nth root
102 Queue/Definition  
102 Sorting algorithms/Merge sort    
102 Trigonometric functions  
101 Ordered words
101 Sorting algorithms/Selection sort
101 The Twelve Days of Christmas  
100 Harshad or Niven series  
100 Middle three digits  
99 Call a function    
99 Power set
99 Shell one-liner  
99 Short-circuit evaluation
99 String prepend
99 Sum digits of an integer
98 24 game      
98 Create a two-dimensional array at runtime
98 Sum multiples of 3 and 5
98 Vector products  
97 Arbitrary-precision integers (included)      
97 Range extraction
97 Sierpinski carpet
97 Y combinator        
96 Interactive programming          
96 N'th
96 Range expansion
95 Collections  
95 Digital root
95 Enumerations
95 Sorting algorithms/Gnome sort
94 Abundant, deficient and perfect number classifications  
94 Execute Brain****  
94 Sequence of non-squares  
94 Time a function      
94 Walk a directory/Non-recursively  
93 Evolutionary algorithm
93 Exponentiation operator
93 First-class functions      
93 Sorting algorithms/Cocktail sort    
92 Averages/Mode  
92 Create an HTML table
92 Inheritance/Single      
92 MD5      
92 One-dimensional cellular automata    
92 Random number generator (included)  
91 Cumulative standard deviation  
91 Dragon curve      
91 Hello world/Newbie      
91 Number names
91 Sort using a custom comparator  
90 Forward difference
90 Hofstadter Q sequence  
90 JSON        
90 Sorting algorithms/Bogosort  
90 Symmetric difference  
89 Averages/Simple moving average
89 Hamming numbers  
89 Josephus problem    
89 Langton's ant  
89 Monty Hall problem
89 String comparison  
88 Entropy
88 Gray code  
88 Price fraction
87 Amicable pairs  
87 Greatest subsequential sum
87 Number reversal game    
86 CSV data manipulation
86 Catamorphism    
86 Five weekends
86 Menu
86 Sorting algorithms/Heapsort  
86 Tree traversal    
85 Abstract type          
85 CSV to HTML translation    
85 Calculating the value of e  
85 Map range  
84 Almost prime
84 Compare a list of strings    
84 SEDOLs
83 Last Friday of each month      
83 Monte Carlo methods  
83 Non-decimal radices/Convert      
83 Queue/Usage      
83 Simple windowed application      
83 Sort an array of composite structures
83 Terminal control/Clear the screen      
83 Walk a directory/Recursively  
83 Window creation  
82 Closures/Value capture        
82 Count in factors
82 File modification time
82 Introspection    
82 Set    
82 URL decoding  
81 Box the compass  
81 Floyd's triangle  
81 Top rank per group    
81 Word wrap    
80 CRC-32    
80 Find the last Sunday of each month  
80 Hello world/Line printer  
80 Here document    
80 Literals/Floating point          
80 Long multiplication  
80 Roots of unity    
80 Sorting algorithms/Shell sort    
80 Terminal control/Ringing the terminal bell    
79 Bitmap    
79 Concurrent computing      
79 Count the coins  
79 Find common directory path  
79 Jensen's Device      
79 Order two numerical lists  
79 Playing cards    
79 Repeat    
79 Show the epoch    
79 Singly-linked list/Traversal      
79 Sorting algorithms/Counting sort      
79 Spiral matrix  
79 Split a character string based on change of character  
79 Web scraping  
79 XML/Input    
78 Address of a variable          
78 Date manipulation    
78 Dynamic variable names      
78 Multifactorial    
78 Operator precedence  
78 Pythagorean triples  
78 Read a specific line from a file  
78 Sockets      
77 Find the missing permutation    
77 Knapsack problem/0-1        
77 Linear congruential generator      
77 Lucas-Lehmer test    
77 Munchausen numbers  
77 Proper divisors
77 Strip comments from a string
77 URL encoding    
76 Averages/Mean angle
76 Call an object method          
76 Kaprekar numbers    
76 Keyboard input/Obtain a Y or N response  
76 Soundex
75 Man or boy test        
75 Modular inverse
75 Non-decimal radices/Output  
75 Phrase reversals    
75 Population count
75 Semordnilap  
75 Show ASCII table  
75 Sorting algorithms/Comb sort      
75 Unicode variable names    
74 Anagrams/Deranged anagrams
74 Calendar    
74 Equilibrium index  
74 List comprehensions      
74 Parsing/RPN calculator algorithm        
74 Pi    
74 Read a configuration file        
74 SHA-1      
74 Write entire file  
73 Animation    
73 Execute HQ9+    
73 Fibonacci n-step number sequences
73 Gamma function
73 Hello world/Web server      
73 Multiple distinct objects    
73 Sort disjoint sublist      
73 Special characters        
73 Sudoku  
72 Convert seconds to compound duration  
72 Empty directory  
72 Exceptions/Catch an exception thrown in a nested call        
72 Flow-control structures        
72 Guess the number/With feedback (player)    
72 Rock-paper-scissors      
72 SHA-256  
72 Singly-linked list/Element definition    
72 Take notes on the command line    
72 Vigenère cipher    
72 Zeckendorf number representation    
71 AKS test for primes      
71 Enforced immutability      
71 Euler's sum of powers conjecture  
71 Fractal tree      
71 Longest common subsequence    
71 Polymorphism    
71 Rep-string  
71 Stair-climbing puzzle      
70 Bitmap/Bresenham's line algorithm  
70 Call a foreign-language function        
70 Closest-pair problem  
70 Currying        
70 Four bit adder      
70 Horizontal sundial calculations      
70 IBAN    
70 Largest int from concatenated ints  
70 Old lady swallowed a fly            
70 Quaternion type      
70 Sorting algorithms/Stooge sort      
70 Trabb Pardo–Knuth algorithm      
70 Write float arrays to a text file      
69 15 puzzle game        
69 Catalan numbers/Pascal's triangle    
69 Combinations with repetitions      
69 Constrained random points on a circle  
69 Draw a sphere      
69 Magic squares of odd order    
69 Maze generation    
69 Numerical integration      
69 Self-describing numbers      
69 Sorting algorithms/Pancake sort    
68 Anti-primes      
68 Barnsley fern        
68 Euler method    
68 Extend your language          
68 Fork          
68 Jump anywhere          
68 Named parameters        
68 Priority queue          
68 Text processing/Max licenses in use      
68 Thue-Morse      
67 Amb    
67 Benford's law  
67 Chinese remainder theorem        
67 Department numbers    
67 Fast Fourier transform            
67 Morse code      
67 Nested function        
67 Pernicious numbers      
67 Roots of a function    
67 Sequence of primes by trial division    
67 Special variables      
67 Unix/ls        
67 Van der Corput sequence      
66 Arithmetic/Rational        
66 Circles of given radius through two points      
66 One of n lines in a file  
66 Remove lines from a file  
66 Runtime evaluation          
66 Sort stability    
66 Strip control codes and extended characters from a string  
66 Variable size/Get        
65 Continued fraction        
65 Documentation        
65 General FizzBuzz      
65 HTTPS      
65 Hofstadter-Conway $10,000 sequence  
65 Inheritance/Multiple        
65 Narcissistic decimal number    
65 Optional parameters      
65 Roots of a quadratic function        
64 Angle difference between two bearings        
64 Factors of a Mersenne number      
64 Jewels and stones        
64 Reduced row echelon form          
64 Tic-tac-toe        
64 Word frequency  
64 XML/Output      
63 Animate a pendulum    
63 Damm algorithm    
63 Exponentiation order          
63 Get system command output          
63 Memory allocation        
63 Non-decimal radices/Input      
63 Probabilistic choice    
63 Semiprime      
63 Singly-linked list/Element insertion      
63 Sort three variables        
63 Stern-Brocot sequence    
63 Undefined values        
63 Write language name in 3D ASCII      
63 Yin and yang        
62 100 prisoners        
62 Arithmetic evaluation      
62 Best shuffle    
62 Binary strings      
62 Cholesky decomposition        
62 Globally replace text in several files    
62 Modular exponentiation        
62 Mouse position    
62 Plot coordinate pairs      
62 Runge-Kutta method      
61 Averages/Mean time of day        
61 Draw a clock        
61 Generator/Exponential          
61 Sorting algorithms/Sleep sort          
61 Truncatable primes      
61 User input/Graphical      
60 24 game/Solve          
60 Bitmap/Write a PPM file          
60 Cartesian product of two or more lists        
60 Emirp primes  
60 Extract file extension      
60 Huffman coding          
60 Knapsack problem/Continuous          
60 Miller–Rabin primality test    
60 Partial function application          
60 Test a function    
60 Unicode strings          
59 9 billion names of God the integer          
59 Brownian tree        
59 CUSIP    
59 Dutch national flag problem        
59 Host introspection        
59 JortSort    
59 Knapsack problem/Unbounded        
59 Knight's tour        
59 Left factorials        
59 Longest common prefix          
59 Sorting algorithms/Bead sort        
59 Subleq            
59 Van Eck sequence      
58 2048    
58 4-rings or 4-squares puzzle      
58 Abundant odd numbers    
58 Add a variable to a class instance at runtime            
58 Compile-time calculation          
58 Hash join      
58 I before E except after C      
58 Integer overflow            
58 Leonardo numbers      
58 Ludic numbers    
58 Odd word problem    
58 Random number generator (device)            
58 Stem-and-leaf plot      
58 Two sum      
57 Deal cards for FreeCell        
57 Delegates        
57 Draw a cuboid      
57 LZW compression          
57 Mad Libs          
57 Magic 8-ball    
57 Matrix-exponentiation operator            
57 Multisplit      
57 Scope modifiers        
57 Sorting algorithms/Permutation sort          
57 Terminal control/Coloured text          
57 Terminal control/Display an extended character          
57 Topological sort            
57 Truncate a file      
56 DNS query          
56 Dinesman's multiple-dwelling problem  
56 Discordian date        
56 Doubly-linked list/Element definition      
56 Extreme floating point values          
56 Fibonacci word  
56 Forest fire    
56 Long year        
56 Rosetta Code/Rank languages by popularity      
56 Sierpinski triangle/Graphical              
56 Singleton          
56 Square but not cube    
55 Base64 encode data          
55 Define a primitive data type          
55 Determine if a string has all the same characters  
55 Grayscale image          
55 Modulinos          
55 Munching squares              
55 Pascal matrix generation      
55 Quickselect algorithm    
55 Stack traces        
55 Unbias a random generator        
54 Attractive numbers        
54 Bernoulli numbers          
54 Chinese zodiac  
54 Determine if a string is collapsible    
54 Draw a pixel          
54 FASTA format    
54 Handle a signal        
54 Iterated digits squaring        
54 Kernighans large earthquake problem          
54 Pointers and references          
54 Runtime evaluation/In an environment        
54 Synchronous concurrency        
54 Terminal control/Cursor positioning          
54 Ternary logic          
54 Universal Turing machine            
54 Wireworld        
54 XML/XPath          
53 Base64 decode data            
53 Convert decimal number to rational        
53 Dijkstra's algorithm    
53 Dining philosophers        
53 Heronian triangles          
53 ISBN13 check digit          
53 Keyboard input/Keypress check    
53 Longest common substring        
53 Loops/Increment loop index within loop body      
53 Maximum triangle path sum      
53 Non-continuous subsequences      
53 Perfect shuffle      
53 Send email          
53 Statistics/Basic                
53 Validate International Securities Identification Number          
53 Vector              
53 XML/DOM serialization          
52 Call a function in a shared library            
52 Copy stdin to stdout        
52 First-class functions/Use numbers analogously            
52 Inverted syntax              
52 Longest increasing subsequence          
52 Polynomial regression                
52 Rate counter        
52 Seven-sided dice from five-sided dice      
52 Smith numbers    
52 Strip block comments      
52 Text processing/2        
52 Tokenize a string with escaping          
51 Farey sequence          
51 Gaussian elimination          
51 Holidays related to Easter          
51 McNuggets problem        
51 Move-to-front algorithm      
51 Pig the dice game        
51 Respond to an unknown method call            
51 Sattolo cycle            
51 Shoelace formula for polygonal area            
50 Archimedean spiral      
50 Associative array/Merging  
50 Cantor set          
50 Colour bars/Display        
50 Find the intersection of two lines      
50 Fractran          
50 GUI component interaction        
50 Jaro similarity          
50 Make directory path      
50 Naming conventions          
50 Password generator        
50 RPG attributes generator          
50 Search a list of records          
50 Zebra puzzle            
49 Chaos game          
49 Determinant and permanent              
49 Doubly-linked list/Traversal      
49 Greyscale bars/Display          
49 Hofstadter Figure-Figure sequences        
49 Last letter-first letter          
49 Metaprogramming            
49 Sort numbers lexicographically        
49 Stable marriage problem            
49 Text processing/1      
48 Determine if a string has all unique characters  
48 Doubly-linked list/Element insertion      
48 Execute a Markov algorithm          
48 Extensible prime generator      
48 History variables          
48 Longest string challenge        
48 Polymorphic copy          
48 Polynomial long division              
48 Visualize a tree        
48 Water collected between towers            
47 Append a record to the end of a text file                
47 Bitmap/Flood fill              
47 Echo server      
47 Kronecker product          
47 Narcissist            
47 OpenGL      
47 Ulam spiral (for primes)              
46 Active object          
46 Average loop length              
46 Determine if only one instance is running          
46 Egyptian division      
46 Element-wise operations            
46 Fusc sequence        
46 Gapful numbers        
46 Problem of Apollonius              
46 Set consolidation        
46 Sorting algorithms/Radix sort              
46 Verify distribution uniformity/Naive        
45 Bulls and cows/Player            
45 Carmichael 3 strong pseudoprimes          
45 Doubly-linked list/Definition  
45 Generate Chess960 starting position              
45 Image noise          
45 Parsing/Shunting-yard algorithm          
45 Remove vowels from a string      
45 Rosetta Code/Count examples          
45 Send an unknown method call              
45 Sparkline in unicode        
45 Spinning rod animation/Text              
45 Taxicab numbers          
45 Text between          
44 Atomic updates        
44 Bitmap/Read a PPM file            
44 Currency        
44 Elementary cellular automaton            
44 GUI/Maximum window dimensions            
44 Hickerson series of almost integers            
44 Nim game          
44 Secure temporary file              
44 Subtractive generator            
44 Sum to 100    
44 Truth table              
44 Two identical strings            
43 Deepcopy          
43 Determine if a string is squeezable        
43 Digital root/Multiplicative digital root            
43 Fivenum                
43 Flipping bits game            
43 Keyboard input/Flush the keyboard buffer            
43 Knapsack problem/Bounded            
43 MD5/Implementation              
43 Percentage difference between images          
43 Recaman's sequence            
43 S-expressions            
43 Sorting Algorithms/Circle Sort              
43 Table creation/Postal addresses          
43 Twelve statements              
43 UTF-8 encode and decode          
43 Voronoi diagram          
42 Aliquot sequence classifications            
42 Balanced ternary              
42 Bitmap/Midpoint circle algorithm            
42 Calendar - for "REAL" programmers            
42 Days between dates            
42 Hilbert curve            
42 Inverted index          
42 Permutations by swapping            
42 Permutations/Derangements            
42 Sort a list of object identifiers          
42 Speech synthesis            
42 Start from a main routine        
42 Summarize and say sequence          
42 Terminal control/Dimensions          
42 The Name Game            
41 Bell numbers            
41 Casting out nines            
41 Chowla numbers                
41 Color of a screen pixel      
41 Combinations and permutations                
41 Loops/With multiple ranges          
41 Musical scale          
41 Parallel calculations        
41 Pascal's triangle/Puzzle          
41 Permutation test            
41 Prime conspiracy                
41 Primorial numbers          
41 Sailors, coconuts and a monkey problem            
41 Sorting algorithms/Strand sort          
41 Topswops                  
41 Totient function              
41 Variable size/Set                
40 21 game          
40 Cramer's rule              
40 Euler's identity              
40 GUI enabling/disabling of controls            
40 Julia set          
40 Magic squares of doubly even order              
40 Parametric polymorphism                
40 Rosetta Code/Find bare lang tags                  
40 Scope/Function names and labels              
40 Statistics/Normal distribution                  
40 Variable-length quantity                  
39 Abbreviations, automatic            
39 Brace expansion              
39 Brazilian numbers            
39 Colour pinstripe/Display            
39 Create a file on magnetic tape              
39 Cycle detection                    
39 Display a linear combination              
39 Events        
39 Feigenbaum constant calculation              
39 File extension is in extensions list          
39 Floyd-Warshall algorithm                
39 Kahan summation              
39 Knuth's algorithm S              
39 LU decomposition                
39 Long primes              
39 MAC Vendor Lookup          
39 Metered concurrency                
39 Multiple regression                
39 Order disjoint list items              
39 Parsing/RPN to infix conversion        
39 Penney's game              
39 Perfect totient numbers            
39 Permutations with repetitions          
39 Ray-casting algorithm            
39 Sum of divisors          
39 Tau number        
38 Abbreviations, easy            
38 Bioinformatics/base count          
38 Break OO privacy              
38 Constrained genericity                
38 Convex hull                
38 Cuban primes          
38 Find the intersection of a line with a plane                  
38 Function prototype      
38 Humble numbers        
38 Idiomatically determine all the lowercase and uppercase letters        
38 Input/Output for lines of text            
38 Input/Output for pairs of numbers              
38 Largest number divisible by its digits            
38 Lychrel numbers              
38 Maze solving          
38 Minesweeper game            
38 Pathological floating point problems          
38 Primality by Wilson's theorem                
38 Pythagorean quadruples            
38 QR decomposition                  
38 Ranking methods              
38 Read a file character by character/UTF8            
38 Substitution cipher                  
38 Sutherland-Hodgman polygon clipping                
38 Terminal control/Hiding the cursor            
38 Terminal control/Inverse video          
38 Vampire number          
37 Approximate equality                
37 Fibonacci word/fractal            
37 Find palindromic numbers in both binary and ternary bases            
37 Isqrt (integer square root) of X              
37 Loops/Wrong ranges              
37 MD4          
37 Mertens function              
37 Metronome        
37 Object serialization                
37 Solve the no connection puzzle                
37 Test integerness                
37 Words containing "the" substring          
36 Abbreviations, simple              
36 Bitwise IO          
36 Check output device is a terminal                  
36 Egyptian fractions                
36 Numerical integration/Gauss-Legendre Quadrature              
36 Ordered partitions                
36 Pentagram              
36 Pinstripe/Display              
36 Pythagoras tree            
36 RIPEMD-160              
36 RSA code            
36 Safe primes and unsafe primes            
36 Square-free integers                
36 Terminal control/Unicode output            
35 Arithmetic-geometric mean/Calculate Pi              
35 Bitmap/Bézier curves/Cubic            
35 Determine if two triangles overlap                
35 Entropy/Narcissist                
35 Factorions          
35 Four is magic      
35 Multiline shebang              
35 Parametrized SQL statement              
35 Tau function          
35 Yellowstone sequence          
34 Cheryl's birthday              
34 Church numerals                
34 Conjugate transpose                  
34 Galton box animation              
34 Integer roots                  
34 Lah numbers                  
34 Multi-dimensional array              
34 Mutex                
34 Old Russian measure of length              
34 Palindrome dates      
34 Pattern matching              
34 Set puzzle                
34 Subset sum problem                  
34 Topic variable                
33 Bitcoin/address validation                
33 Check input device is a terminal                
33 Continued fraction/Arithmetic/Construct from rational number              
33 Decimal floating point number to binary                
33 Executable library                
33 Largest proper divisor of n              
33 Multiplicative order                
33 Negative base numbers              
33 Parse command-line arguments            
33 Partition an integer x into n primes                
33 Poker hand analyser            
33 Resistor mesh                    
33 Sequence: smallest number with exactly n divisors        
33 Solve a Hidato puzzle                  
33 Sorting algorithms/Patience sort              
33 Straddling checkerboard          
33 Terminal control/Cursor movement                
33 Textonyms              
33 Type detection              
33 Zumkeller numbers                
32 Bitmap/Bézier curves/Quadratic                  
32 Compiler/lexical analyzer              
32 Eban numbers                
32 Execute SNUSP            
32 Faulhaber's formula                    
32 Faulhaber's triangle                
32 Implicit type conversion              
32 Mersenne primes                
32 Numbers divisible by their individual digits, but not by the product of their digits.            
32 Reflection/List properties                  
32 Rosetta Code/Find unimplemented tasks            
32 Set of real numbers            
32 Sorting algorithms/Cycle sort                  
32 Strong and weak primes              
32 Use another language to call a function                
32 Write to Windows event log        
32 Xiaolin Wu's line algorithm                
32 Zhang-Suen thinning algorithm                
31 Apply a digital filter (direct form II transposed)                  
31 Arena storage pool                  
31 Bacon cipher                  
31 Bitmap/Histogram                
31 Chaocipher              
31 Chat server                
31 Check Machin-like formulas                  
31 Checkpoint synchronization                
31 Dice game probabilities                    
31 Draw a rotating cube            
31 Extra primes              
31 First class environments                  
31 First power of 2 that has leading decimal digits of 12              
31 Gauss-Jordan matrix inversion                    
31 Keyboard macros        
31 Length of an arc between two angles            
31 Longest common suffix        
31 Modular arithmetic                  
31 Numeric error propagation              
31 Parallel brute force          
31 Primes which sum of digits is 25        
31 Simple database                  
31 Sum of the digits of n is substring of n            
31 Terminal control/Preserve screen                
31 URL parser              
31 Weird numbers                  
31 Word break problem              
30 AVL tree                  
30 Coprimes              
30 Cousin primes            
30 Decision tables            
30 Deconvolution/1D                  
30 Diversity prediction theorem                
30 FTP                  
30 HTTPS/Authenticated              
30 Jacobi symbol                
30 Koch curve              
30 Mian-Chowla sequence            
30 Numbers with prime digits whose sum is 13          
30 Pell's equation                
30 Pragmatic directives                
30 Product of divisors            
30 Rosetta Code/Fix code tags          
30 Sequence: smallest number greater than previous term with exactly n divisors          
30 Sexy primes          
30 State name puzzle                  
30 Stirling numbers of the second kind                  
30 Stream merge                
30 Super-d numbers                
30 Update a configuration file                
30 Verify distribution uniformity/Chi-squared test                    
30 Window creation/X11                
30 Word wheel          
29 ABC words            
29 Burrows–Wheeler transform                    
29 Death Star              
29 Fairshare between two and more                
29 Find first and last set bit of a long integer              
29 Formal power series                
29 Honeycombs                
29 Memory layout of a data structure                  
29 Polyspiral                
29 Ramsey's theorem                
29 Smarandache prime-digital sequence            
29 Stirling numbers of the first kind                
29 Sum and product puzzle              
29 Sum of first n cubes            
29 Superellipse                  
29 Table creation                
29 Thiele's interpolation formula                
29 Unprimeable numbers                
29 World Cup group stage                  
28 Active Directory/Connect                
28 Base-16 representation          
28 Chebyshev coefficients                    
28 Chemical calculator                  
28 Find largest left truncatable prime in a given base                  
28 First perfect square in base n with n unique digits              
28 Fraction reduction                  
28 Law of cosines - triples              
28 Machine code              
28 Natural sorting                  
28 Nautical bell              
28 Nice primes            
28 Nonoblock                
28 Numbers which binary and ternary digit sum are prime            
28 Numbers with equal rises and falls              
28 Peano curve                  
28 Perlin noise              
28 Range consolidation              
28 Reflection/List methods              
28 Same fringe                  
28 Strange numbers              
28 Strange unique prime triplets          
28 Successive prime differences            
28 The ISAAC Cipher                
28 Tonelli-Shanks algorithm                  
27 Angles (geometric), normalization and conversion              
27 Birthday problem                
27 Card shuffles                    
27 Create an object at a given address              
27 Cut a rectangle                
27 Fermat numbers                  
27 Find prime numbers of the form n*n*n+2          
27 Finite state machine                
27 Frobenius numbers              
27 Go Fish                
27 Minimum positive multiple in base 10 using only 0 and 1              
27 Monads/Maybe monad          
27 Möbius function            
27 N-smooth numbers                  
27 Palindromic gapful numbers                
27 Paraffins                    
27 Plasma effect              
27 Safe addition                  
27 Sequence of primorial primes                
27 Shift list elements to left by 3      
27 Sierpinski pentagon                  
27 Solve a Holy Knight's tour                
27 Strange plus numbers            
26 A* search algorithm                
26 Alternade words            
26 Bin given limits                  
26 Circular primes                
26 Color wheel                  
26 Distributed programming                
26 Find words which contains more than 3 e vowels            
26 Find words with alternating vowels and consonants          
26 Fixed length records                
26 Image convolution                
26 Kronecker product based fractals                  
26 Magic squares of singly even order                    
26 Mayan numerals              
26 Parse an IP Address                
26 Ramer-Douglas-Peucker line simplification                  
26 Sorting algorithms/Cocktail sort with shifting bounds                  
26 Teacup rim text            
25 Abelian sandpile model                
25 Additive primes            
25 Audio alarm          
25 Cipolla's algorithm                  
25 Elliptic curve arithmetic                    
25 Function frequency                
25 Generate random chess position                    
25 Hough transform                    
25 Hunt the Wumpus              
25 Idiomatically determine all the characters that can be used for symbols                
25 Increasing gaps between consecutive Niven numbers                  
25 Intersecting number wheels              
25 Linux CPU utilization                  
25 List rooted trees                
25 Next highest int from digits            
25 Pierpont primes              
25 Play recorded sounds            
25 Primes with digits in nondecreasing order            
25 RCRPG            
25 Random Latin squares              
25 Simulate input/Keyboard              
25 Superpermutation minimisation                
25 Total circles area                    
25 Triplet of three numbers            
25 Welch's t-test                    
25 Yahoo! search interface                  
24 Base58Check encoding                    
24 Common sorted list          
24 De Bruijn sequences                    
24 Elementary cellular automaton/Random Number Generator                  
24 K-means++ clustering                  
24 Long literals, with continuations              
24 Make a backup file              
24 Markov chain text generator                  
24 Mind boggling card trick              
24 Padovan sequence            
24 Percolation/Mean run density                    
24 Permutations/Rank of a permutation                  
24 Playfair cipher                    
24 Pseudo-random numbers/PCG32              
24 Reverse the gender of a string                  
24 Shortest common supersequence                  
24 Video display modes                  
23 Active Directory/Search for a user                    
23 Bioinformatics/Sequence mutation              
23 Create an object/Native demonstration                
23 Deming's Funnel                    
23 Kolakoski sequence                    
23 Lucky and even lucky numbers                
23 Magnanimous numbers              
23 Main step of GOST 28147-89                  
23 Matrix chain multiplication                    
23 Monads/List monad          
23 Partition function P                
23 Pseudo-random numbers/Xorshift star              
23 Record sound                
23 SOAP            
23 Show the (decimal) value of a number of 1s appended with a 3, then squared            
23 Solve a Hopido puzzle                  
23 Spelling of ordinal numbers              
23 Summarize primes            
22 ASCII art diagram converter                  
22 Addition chains                    
22 Assertions in design by contract                    
22 Change e letters to i in words          
22 Commatizing numbers                
22 Data Encryption Standard                    
22 Eertree                  
22 Esthetic numbers                
22 Exponentiation with infix operators in (or operating on) the base                
22 File size distribution                  
22 Find duplicate files                  
22 Kosaraju                    
22 Levenshtein distance/Alignment                    
22 Mastermind              
22 Merge and aggregate datasets            
22 Nested templated data                  
22 Numbers with same digit set in base 10 and base 16              
22 Numeric separator syntax                
22 Orbital elements                    
22 Pig the dice game/Player                
22 Self numbers              
22 Snake and Ladder                
22 Sokoban                  
22 Solve a Numbrix puzzle                  
22 Special Divisors              
22 UPC              
22 Vigenère cipher/Cryptanalysis                    
22 Vogel's approximation method                    
21 Bitcoin/public point to address                
21 Changeable words              
21 Doomsday rule                    
21 Index finite lists of positive integers                    
21 Joystick position              
21 K-d tree                  
21 Median filter                    
21 Montgomery reduction                    
21 Native shebang                  
21 Odd words            
21 Pancake numbers              
21 Piprimes            
21 Polynomial synthetic division                  
21 Reflection/Get source              
21 Smallest square that begins with n            
21 Sum data type                
21 Sunflower fractal                
21 Ulam numbers                
21 Window management              
20 15 puzzle solver                
20 Arithmetic coding/As a generalized change of radix                  
20 Bilinear interpolation                    
20 Cistercian numerals                
20 Compiler/code generator                
20 Elementary cellular automaton/Infinite length                    
20 Find words which first and last three letters are equals            
20 Latin Squares in reduced form                  
20 N-body problem                    
20 Order by pair comparisons                  
20 P-value correction                    
20 Print debugging statement                  
20 Rare numbers                
20 Selective file copy                
20 Sequence: nth number with exactly n divisors                  
20 Sierpinski arrowhead curve                  
20 Simulate input/Mouse            
20 Twin primes          
19 Abelian sandpile model/Identity                  
19 Code segment unload                    
19 Color quantization                
19 Common list elements            
19 Compiler/virtual machine interpreter                  
19 Draw pixel 2              
19 Find prime n for that reversed n is also prime            
19 Find words which contains all the vowels          
19 Just in time processing on a character stream                    
19 Knuth's power tree                  
19 Line circle intersection                    
19 Metallic ratios                  
19 Monads/Writer monad                
19 Names to numbers                
19 Nonogram solver                
19 Perceptron                
19 Percolation/Site percolation                    
19 Prime words              
19 Primes - allocate descendants to their ancestors                  
19 Readline interface                    
19 SQL-based authentication                    
19 Sleeping Beauty problem                  
19 Smallest power of 6 whose decimal expansion contains n            
19 Transportation problem                    
19 Untrusted environment                    
19 Word search                    
19 Zeckendorf arithmetic                    
18 Biorhythms                  
18 Calkin-Wilf sequence                  
18 Canonicalize CIDR                  
18 Coprime triplets            
18 EKG sequence convergence                  
18 Erdős-primes                
18 Find URI in text                  
18 Find if a point is within a triangle                    
18 Free polyominoes enumeration                    
18 Imaginary base numbers                    
18 Most frequent k chars distance                
18 NYSIIS                    
18 Neighbour primes              
18 Next special primes              
18 Nimber arithmetic                    
18 Odd squarefree semiprimes              
18 Percolation/Mean cluster density                    
18 Prime triplets              
18 Self-hosting compiler                  
18 Separate the house number from the street name                    
18 Solve triangle solitare puzzle                    
18 Suffix tree                  
17 Bitmap/Read an image through a pipe                  
17 Chernick's Carmichael numbers                  
17 Compiler/syntax analyzer                  
17 Cyclotomic polynomial                    
17 Find first missing positive            
17 Geometric algebra                  
17 HTTPS/Client-authenticated                    
17 Matrix digital rain                  
17 Padovan n-step number sequences                
17 Particle swarm optimization                  
17 Percolation/Bond percolation                    
17 Proof                    
17 Pseudo-random numbers/Splitmix64                  
17 Ramanujan's constant                    
17 Retrieve and search chat history                  
17 Tarjan                    
17 Terminal control/Positional read                
17 Vibrating rectangles                
17 Words from neighbour ones            
16 Aspect oriented programming              
16 Bitmap/PPM conversion through a pipe                    
16 Compiler/AST interpreter                    
16 Find words which contains most consonants              
16 Getting the number of decimals              
16 Logistic curve fitting in epidemiology                    
16 Peaceful chess queen armies                    
16 Practical numbers                  
16 Print itself                  
16 Pseudo-random numbers/Combined recursive generator MRG32k3a                    
16 Rendezvous                
16 Singly-linked list/Element removal                  
16 Snake              
16 Special factorials                    
16 Sylvester's sequence                
16 Wieferich primes                  
15 Banker's algorithm                    
15 Compare sorting algorithms' performance                  
15 Consecutive Primes With Ascending Or Descending Differences                
15 Cubic Special Primes            
15 Four is the number of letters in the ...                    
15 Functional coverage tree                  
15 Numerical integration/Adaptive Simpson's method                    
15 OpenWebNet password                
15 Palindromic primes                
15 Square root by hand                  
15 XML validation                  
14 Continued fraction/Arithmetic/G(matrix ng, continued fraction n)                    
14 Deconvolution/2D+                    
14 Factorial base numbers indexing permutations of a collection                  
14 Generalised floating point addition                  
14 Gradient descent                  
14 Jaro-Winkler distance                
14 Permutations with some identical elements                    
14 Pisano period                    
14 Quadrat Special Primes              
14 SHA-256 Merkle tree                  
14 Sierpinski curve                  
14 Sine wave                
14 Smallest numbers              
14 Substring primes              
14 Topological sort/Extracted top item                    
14 Unique characters                
14 Unique characters in each string              
13 Air mass                  
13 Checksumcolor                  
13 Longest palindromic substrings                
13 Simulated annealing                    
13 Sorting algorithms/Tree sort on a linked list                    
13 VList                    
13 XXXX redacted                    
12 Almkvist-Giullera formula for pi                    
12 Audio frequency generator                  
12 Canny edge detector                    
12 Execute CopyPasta Language                    
12 French Republican calendar                  
12 Greed                    
12 Harmonic series                    
12 Interactive help                  
12 Launch rocket with countdown and acceleration in stdout                    
12 Minimal steps down to 1                    
12 Minkowski question-mark function                    
12 Modified random distribution                    
12 Railway circuit                    
12 Run as a daemon or service                    
12 Safe mode                  
12 Suffixation of decimal numbers                    
12 Tetris                  
12 Tree from nesting levels                    
12 Two bullet roulette                    
12 Untouchable numbers                
11 Bioinformatics/Subsequence                  
11 Catmull–Clark subdivision surface                    
11 Combinations with repetitions/Square digit chain                    
11 Display an outline as a nested table                  
11 Geohash                  
11 Graph colouring                    
11 Non-transitive dice                  
11 One-time pad                    
11 Penrose tiling                    
11 Pentomino tiling                    
11 Powerful numbers                    
11 Resistance calculator                    
11 Sierpinski square curve                    
11 Spoof game                  
11 Text completion                  
11 Three word location                  
11 Tree datastructures                    
11 Unit testing                    
11 Using a speech engine to highlight words                
10 Colour pinstripe/Printer                    
10 Curve that touches three points                  
10 Distribution of 0 Digits in Factorial Series                    
10 External sort                    
10 Faces from a mesh                    
10 Numerical and alphabetical suffixes                    
10 Pinstripe/Printer                    
10 Pseudorandom number generator image                  
10 Quoting constructs                  
10 Rosetta Code/Rank languages by number of users                    
10 Starting a web browser                    
10 Text to HTML                    
10 Time-based one-time password algorithm                    
9 Continued fraction/Arithmetic/G(matrix ng, continued fraction n1, continued fraction n2)                    
9 Count the coins/0-1                    
9 Elliptic Curve Digital Signature Algorithm                    
9 Fibonacci heap                    
9 Fibonacci matrix-exponentiation                    
9 Hourglass puzzle                    
9 IPC via named pipe                    
9 Longest substrings without repeating characters                  
9 Morpion solitaire                    
9 Parse EBNF                    
9 Range modifications                  
9 Resistance network calculator                    
9 Rosetta Code/Tasks without examples                    
9 Sort an outline at every level                  
9 Square Form Factorization                    
9 User defined pipe and redirection operators                  
9 War card game                    
9 Word ladder                  
8 16 puzzle game                
8 Bioinformatics/global alignment                    
8 Brace expansion using ranges                  
8 Compiler/Verifying syntax                    
8 Distinct Palindromes Within Decimal Numbers                    
8 Doubly-linked list/Element removal                    
8 Home primes                    
8 Multidimensional Newton-Raphson method                    
8 OpenGL/Utah Teapot                    
8 Robots                  
7 Addition-chain exponentiation                    
7 Discrete Fourier transform                    
7 I'm a software engineer, get me out of here                  
7 Mayan calendar                    
7 P-Adic numbers, basic                    
7 Price list behind API                    
7 Random sentence from book                  
7 Recursive descent parser generator                    
7 Tamagotchi emulator                    
7 URL shortener                  
6 Audio overlap loop                
6 Latin Squares in reduced form/Randomizing using Jacobson and Matthews’ Technique                  
6 OpenGL pixel shader                  
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                  
6 Waveform analysis/Doh ray me                    
5 Black Box                  
5 Boids                    
5 Chess player                    
5 Compiler/Simple file inclusion pre processor                  
5 Hexapawn                  
5 OLE automation                  
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 Unicode polynomial equation                    
5 WiktionaryDumps to words                    
4 Generalised floating point multiplication                  
4 Solving coin problems                    
4 Using the Meetup.com API                  
4 Weather routing                    
3 Blackjack strategy                    
3 Rosetta Code/List authors of task descriptions                    
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