Rosetta Code/Count examples/Full list

From Rosetta Code

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

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

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

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

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

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

Top tier Second tier Third tier Fourth tier
First ten programming languages by number of task examples completed:
    ① Wren          ② Phix          ③ Julia         ④ Raku          ⑤ Go           
    ⑥ Perl          ⑦ Python        ⑧ Nim           ⑨ J             ⑩ C            
As of 2022-09-19T00:21:27Z :: Tasks: 1191 :: Draft Tasks:381 :: Total Tasks: 1572 :: Total Examples: 88110
Count Task
535 Hello world/Text
353 99 bottles of beer
346 FizzBuzz
332 100 doors
313 Fibonacci sequence
301 Factorial
293 Comments
282 A+B
279 Empty program
253 Function definition
244 Loops/Infinite
239 Arrays
239 Loops/While
238 Reverse a string
237 Ackermann function
231 Loops/For
219 Conditional structures
216 Greatest common divisor
209 Greatest element of a list
208 Arithmetic/Integer
207 Array concatenation
205 Even or odd
195 Integer comparison
195 Repeat a string
192 Averages/Arithmetic mean
192 Increment a numerical string
191 Sieve of Eratosthenes
188 Hello world/Graphical
187 Copy a string
186 Array length
182 Binary digits
181 Loops/Downward for
181 String concatenation
180 Towers of Hanoi
179 Boolean values
179 Sum and product of an array
177 Character codes
176 Apply a callback to an array
176 Integer sequence
175 Generic swap
174 Hello world/Newline omission
173 Empty string
173 String length
173 Tokenize a string
172 Loops/Do-while
172 Rot-13
172 String case
171 Loops/For with a specified step
171 Loops/N plus one half
171 Palindrome detection
170 Loops/Foreach
168 Loops/Break
168 Sum of a series
166 Dot product
166 Leap year
166 Logical operations
166 Quine
164 Sum of squares
162 Hailstone sequence
160 Filter
158 Associative array/Creation
157 Factors of an integer
156 Sort an integer array
156 Sorting algorithms/Bubble sort
155 Roman numerals/Encode
153 Caesar cipher
152 Execute a system command
152 Remove duplicate elements
152 System time
151 Loop over multiple arrays simultaneously
151 Luhn test of credit card numbers
151 Sorting algorithms/Quicksort
150 Higher-order functions
149 Stack
148 Determine if a string is numeric
148 Generate lower case ASCII alphabet
148 Guess the number
147 Primality by trial division
146 Command-line arguments
146 File input/output
146 Substring
146 User input/Text
146 Zero to the zero power
145 Day of the week
143 Bitwise operations
143 Hello world/Standard error
143 Read entire file
142 Check that file exists
142 Least common multiple
142 Loops/Continue
142 Mutual recursion
141 Create a file
138 Sleep
137 ABC problem
136 Balanced brackets
136 Literals/String
136 Variables
135 Date format
135 Pascal's triangle
134 Count in octal
134 Ethiopian multiplication
134 Flatten a list
134 Program termination
133 Binary search
133 Happy numbers
132 Include a file
131 Compound data type
131 Literals/Integer
131 Roman numerals/Decode
129 Function composition
129 Knuth shuffle
129 Mandelbrot set
128 Count occurrences of a substring
128 Loops/Nested
128 N-queens problem
126 Anagrams
126 Detect division by zero
126 Letter frequency
126 Matrix transposition
126 Pick random element
126 Read a file line by line
126 Real constants and functions
126 Sorting algorithms/Insertion sort
125 Align columns
125 Associative array/Iteration
125 Averages/Root mean square
125 String matching
125 Strip a set of characters from a string
124 Formatted numeric output
124 Null object
123 Guess the number/With feedback
123 Matrix multiplication
123 Return multiple values
122 Case-sensitivity of identifiers
122 Haversine formula
122 Identity matrix
122 Search a list
121 Assertions
121 Babbage problem
121 Conway's Game of Life
121 Hash from two arrays
120 Averages/Median
120 Classes
120 Delete a file
120 File size
120 Input loop
120 Look-and-say sequence
120 Perfect numbers
120 Permutations
119 Environment variables
118 Find limit of recursion
117 Sierpinski triangle
116 Call a function
116 Catalan numbers
116 String interpolation (included)
115 Arithmetic/Complex
115 HTTP
115 Pangram checker
115 String append
115 Temperature conversion
114 Infinity
114 Multiplication tables
114 Random numbers
113 Anonymous recursion
113 Hostname
113 Levenshtein distance
113 Rename a file
113 Reverse words in a string
113 Variadic function
112 Evaluate binomial coefficients
112 Horner's rule for polynomial evaluation
112 Run-length encoding
112 Substring/Top and tail
111 Accumulator factory
111 Arithmetic-geometric mean
111 Harshad or Niven series
110 Bulls and cows
110 Comma quibbling
110 The Twelve Days of Christmas
109 Averages/Pythagorean means
109 Create a two-dimensional array at runtime
109 N'th
109 Nth root
109 Program name
109 Strip whitespace from a string/Top and tail
109 Sum multiples of 3 and 5
108 Exceptions
108 Ordered words
108 Sorting algorithms/Merge sort
108 Zig-zag matrix
107 Prime decomposition
107 Queue/Definition
107 Vector products
106 Combinations
106 Digital root
106 Middle three digits
106 Sum digits of an integer
106 Trigonometric functions
105 Regular expressions
105 Sequence of non-squares
105 Sorting algorithms/Selection sort
105 String prepend
104 24 game
104 Enumerations
103 Shell one-liner
102 Abundant, deficient and perfect number classifications
102 Amicable pairs
102 Arbitrary-precision integers (included)
102 Power set
101 Evolutionary algorithm
101 Execute Brain****
101 Short-circuit evaluation
101 Sorting algorithms/Gnome sort
101 Walk a directory/Non-recursively
100 Almost prime
100 Calculating the value of e
100 Collections
100 Range extraction
100 Y combinator
99 Create an HTML table
99 Range expansion
99 Time a function
98 Interactive programming (repl) O
98 MD5
98 Symmetric difference
97 Averages/Mode
97 Hello world/Newbie
97 One-dimensional cellular automata
97 Sort using a custom comparator
96 Dragon curve
96 Exponentiation operator
96 Hofstadter Q sequence
96 Map range
96 Random number generator (included)
96 Sorting algorithms/Cocktail sort
95 First-class functions
95 Hamming numbers
95 String comparison
94 Entropy
94 Langton's ant
94 Monty Hall problem
94 Number reversal game
94 Sorting algorithms/Heapsort
93 Averages/Simple moving average
93 Catamorphism
93 Forward difference
93 Gray code
93 Inheritance/Single
93 Number names
93 Price fraction
93 Sierpinski carpet
93 Sorting algorithms/Bogosort
93 Tree traversal
92 CSV data manipulation
92 Cumulative standard deviation
92 JSON
92 Last Friday of each month
91 Address of a variable
91 Compare a list of strings
91 Menu
91 Simple windowed application
91 Terminal control/Clear the screen
90 Abstract type
90 Greatest subsequential sum
90 Josephus problem
90 Show ASCII table
90 Split a character string based on change of character
89 Five weekends
89 Floyd's triangle
89 Repeat
89 URL decoding
89 Window creation
88 Anti-primes
88 Set
88 Sort an array of composite structures
87 Box the compass
87 Count in factors
87 Find the last Sunday of each month
87 Literals/Floating point
87 Non-decimal radices/Convert
87 Queue/Usage
86 CSV to HTML translation
86 Hello world/Line printer
86 Modular inverse
86 Monte Carlo methods
86 Munchausen numbers
86 Order two numerical lists
86 Proper divisors
86 Top rank per group
86 URL encoding
86 Walk a directory/Recursively
86 Word wrap
85 Bitmap
85 Department numbers
85 Here document O
85 Read a specific line from a file
85 SEDOLs
85 Singly-linked list/Traversal
85 Sorting algorithms/Shell sort
84 CRC-32
84 Closures/Value capture
84 Count the coins
84 File modification time
84 Operator precedence
84 Playing cards
83 Find common directory path
83 Introspection
83 Pythagorean triples
83 Spiral matrix
83 Terminal control/Ringing the terminal bell
82 Concurrent computing
82 Extend your language
82 Find the missing permutation
82 Jump anywhere
82 Knapsack problem/0-1
82 Lucas-Lehmer test
82 Multifactorial
82 Population count
82 Sockets
81 Anagrams/Deranged anagrams
81 Animation
81 Dynamic variable names O
81 Fibonacci n-step number sequences
81 Man or boy test
81 Show the epoch
81 Sorting algorithms/Counting sort
81 Soundex
81 Strip comments from a string
81 Web scraping
80 Kaprekar numbers
80 Keyboard input/Obtain a Y or N response
80 Linear congruential generator
80 Long multiplication
80 Pi
80 Roots of unity
80 Sorting algorithms/Comb sort
80 Special characters
80 Trabb Pardo–Knuth algorithm
79 100 prisoners
79 Angle difference between two bearings
79 Date manipulation
79 Empty directory
79 Jensen's Device
79 Old lady swallowed a fly
79 Phrase reversals
79 Priority queue
79 SHA-1
79 Semordnilap
79 Singly-linked list/Element definition
79 Take notes on the command line
79 Unicode variable names
79 XML/Input
78 15 puzzle game
78 Call a foreign-language function
78 Call an object method
78 Convert seconds to compound duration
78 Equilibrium index
78 Execute HQ9+
78 Gamma function
78 Guess the number/With feedback (player)
78 Hello world/Web server
78 Magic squares of odd order
78 Parsing/RPN calculator algorithm
78 Rock-paper-scissors
78 Sort disjoint sublist
78 Sudoku
78 Write entire file
78 Zeckendorf number representation
77 Averages/Mean angle
77 List comprehensions
77 Rep-string
77 Thue-Morse
76 Calendar
76 Euler's sum of powers conjecture
76 Flow-control structures
76 Non-decimal radices/Output
76 Quaternion type
76 Read a configuration file
76 Square but not cube
76 Vigenère cipher
75 AKS test for primes
75 Additive primes
75 Combinations with repetitions
75 Currying
75 Draw a sphere
75 Enforced immutability
75 Four bit adder
75 Multiple distinct objects
75 Pernicious numbers
75 SHA-256
75 Unix/ls
74 Attractive numbers
74 Benford's law
74 Damm algorithm
74 Jewels and stones
74 Sort three variables
74 Special variables
74 Stair-climbing puzzle
74 Write float arrays to a text file
73 Bitmap/Bresenham's line algorithm
73 Exceptions/Catch an exception thrown in a nested call
73 Fractal tree
73 General FizzBuzz
73 I before E except after C
73 Largest int from concatenated ints
73 Longest common subsequence
73 Sequence of primes by trial division
73 Van der Corput sequence
72 Arithmetic/Rational
72 Barnsley fern
72 Chinese remainder theorem
72 Horizontal sundial calculations
72 IBAN
72 Maze generation
72 Narcissistic decimal number
72 Sorting algorithms/Stooge sort
71 Amb
71 Catalan numbers/Pascal's triangle
71 Constrained random points on a circle
71 Fast Fourier transform
71 Fork
71 Get system command output
71 Numerical integration
71 Polymorphism
71 Runtime evaluation O
71 Self-describing numbers
71 Sorting algorithms/Pancake sort
71 Strip control codes and extended characters from a string
71 Text processing/Max licenses in use
70 Closest-pair problem
70 Exponentiation order
70 Host introspection
70 Morse code
70 Named parameters
70 Nested function
70 Singly-linked list/Element insertion
70 Stern-Brocot sequence
70 Van Eck sequence
70 Yin and yang
69 Abundant odd numbers
69 Euler method
69 Memory allocation
69 One of n lines in a file
69 Probabilistic choice
69 Tic-tac-toe
69 Variable size/Get
69 Word frequency
68 Best shuffle
68 Circles of given radius through two points
68 Continued fraction
68 Extract file extension
68 ISBN13 check digit
68 Remove lines from a file
68 Sort stability
67 Animate a pendulum
67 Binary strings
67 Determine if a string is collapsible
67 Documentation
67 Factors of a Mersenne number
67 Gapful numbers
67 Integer overflow
67 McNuggets problem
67 Plot coordinate pairs
67 RPG attributes generator
67 Roots of a function
67 Roots of a quadratic function
67 Semiprime
67 Undefined values
67 Write language name in 3D ASCII
66 9 billion names of God the integer
66 CUSIP
66 Dutch national flag problem
66 HTTPS
66 Hofstadter-Conway $10,000 sequence
66 Inheritance/Multiple
66 Optional parameters
66 Reduced row echelon form
66 Two sum
66 XML/Output
65 4-rings or 4-squares puzzle
65 Cholesky decomposition
65 Globally replace text in several files
65 Knight's tour
65 Magic 8-ball
65 Modular exponentiation
65 Runge-Kutta method
65 Sorting algorithms/Sleep sort
65 Subleq
64 Averages/Mean time of day
64 Bitmap/Write a PPM file
64 Cartesian product of two or more lists
64 Compile-time calculation O
64 Determine if a string has all the same characters
64 Isqrt (integer square root) of X
64 Leonardo numbers
64 Long year
64 Miller–Rabin primality test
64 Mouse position
64 Quickselect algorithm
64 Smith numbers
64 Test a function
63 24 game/Solve
63 Arithmetic evaluation
63 Base64 decode data
63 Chinese zodiac
63 Copy stdin to stdout
63 Emirp primes
63 Huffman coding
63 JortSort
63 Knapsack problem/Continuous
63 Longest common prefix
63 Ludic numbers
63 Non-decimal radices/Input
63 Partial function application
63 Terminal control/Display an extended character
62 2048
62 Draw a clock
62 Generator/Exponential
62 Knapsack problem/Unbounded
62 Mad Libs
62 Pascal matrix generation
62 Ternary logic
62 Truncatable primes
62 Two identical strings
61 Base64 encode data
61 Brownian tree
61 Define a primitive data type O
61 Draw a cuboid
61 Kernighans large earthquake problem
61 Remove vowels from a string
61 Sorting algorithms/Bead sort
61 Tau function
61 Unicode strings
61 User input/Graphical
61 Vector
60 Add a variable to a class instance at runtime O
60 FASTA format
60 Fibonacci word
60 Grayscale image
60 Left factorials
60 Matrix-exponentiation operator
60 Munching squares
60 Scope modifiers
60 Topological sort
60 Truncate a file
59 Cantor set
59 DNS query
59 Deal cards for FreeCell
59 Doubly-linked list/Element definition
59 Draw a pixel
59 Multisplit
59 Nim game
59 Pointers and references
59 Random number generator (device)
59 Sattolo cycle
59 Stem-and-leaf plot
59 Terminal control/Coloured text
59 Tokenize a string with escaping
58 Bernoulli numbers
58 Dijkstra's algorithm
58 Dinesman's multiple-dwelling problem
58 Discordian date
58 Forest fire
58 Fusc sequence
58 Hash join
58 Iterated digits squaring
58 Keyboard input/Keypress check
58 LZW compression
58 Longest common substring
58 Odd word problem
58 Perfect shuffle
58 Singleton
58 Sorting algorithms/Permutation sort
58 Terminal control/Cursor positioning
58 Unbias a random generator
58 Universal Turing machine
57 Associative array/Merging
57 Convert decimal number to rational
57 Delegates
57 Farey sequence
57 Inverted syntax
57 Loops/Increment loop index within loop body
57 Rosetta Code/Rank languages by popularity
57 Runtime evaluation/In an environment O
57 Sum of first n cubes
57 Words containing "the" substring
56 Abbreviations, automatic
56 Archimedean spiral
56 Call a function in a shared library
56 Determine if a string has all unique characters
56 Extreme floating point values
56 Handle a signal
56 Largest proper divisor of n
56 Loops/With multiple ranges
56 Maximum triangle path sum
56 Modulinos
56 Perfect totient numbers
56 Stack traces
56 Statistics/Basic
56 Sum of divisors
56 Validate International Securities Identification Number
56 XML/XPath
55 Bell numbers
55 Chaos game
55 Find the intersection of two lines
55 Non-continuous subsequences
55 Password generator
55 Pig the dice game
55 Primality by Wilson's theorem
55 Search a list of records
55 Send email O
55 Seven-sided dice from five-sided dice
55 Shoelace formula for polygonal area
55 Sort numbers lexicographically
55 Strip block comments
55 Synchronous concurrency
55 Tau number
55 XML/DOM serialization
54 Colour bars/Display
54 Days between dates
54 First-class functions/Use numbers analogously O
54 Greyscale bars/Display
54 Move-to-front algorithm
54 Naming conventions
54 Polynomial regression
54 Rate counter
54 Recaman's sequence
54 Text processing/2
54 Water collected between towers
54 Wireworld
53 Determine if a string is squeezable
53 Dining philosophers
53 Doubly-linked list/Element insertion
53 Egyptian division
53 Fractran
53 Gaussian elimination
53 Heronian triangles
53 Hofstadter Figure-Figure sequences
53 Holidays related to Easter
53 Jaro similarity
53 Kronecker product
53 Longest increasing subsequence
53 Longest string challenge
53 Sierpinski triangle/Graphical
53 Strange plus numbers
53 Zebra puzzle
52 Convex hull
52 Determinant and permanent
52 Doubly-linked list/Traversal
52 Extensible prime generator
52 Make directory path
52 Metaprogramming
52 Text processing/1
51 Aliquot sequence classifications
51 Append a record to the end of a text file
51 Average loop length
51 Execute a Markov algorithm
51 GUI component interaction
51 Halt and catch fire
51 Respond to an unknown method call O
51 Text between
50 Bioinformatics/base count
50 Bitmap/Flood fill
50 Digital root/Multiplicative digital root
50 Echo server
50 Elementary cellular automaton
50 Floyd-Warshall algorithm
50 Last letter-first letter
50 Mertens function
50 Sparkline in unicode
50 Stable marriage problem
50 Taxicab numbers
50 Totient function
50 Visualize a tree
49 21 game
49 ABC words
49 Abbreviations, easy
49 Chowla numbers
49 Doubly-linked list/Definition
49 Element-wise operations
49 Generate Chess960 starting position
49 Hilbert curve
49 History variables O
49 Image noise
49 MAC vendor lookup
49 Musical scale
49 OpenGL
49 Polymorphic copy
49 Polynomial long division
49 Sorting algorithms/Radix sort
49 The Name Game
49 Ulam spiral (for primes)
49 Verify distribution uniformity/Naive
48 Active object
48 Colour pinstripe/Display
48 Determine if only one instance is running
48 GUI/Maximum window dimensions
48 Send an unknown method call O O
48 Set consolidation
48 Start from a main routine O
48 Sum of the digits of n is substring of n
48 Variable size/Set
47 Bitmap/Midpoint circle algorithm
47 Bitmap/Read a PPM file
47 Color of a screen pixel
47 Currency
47 Deepcopy
47 Narcissist
47 Permutations/Derangements
47 Problem of Apollonius
47 Smallest square that begins with n
47 Speech synthesis
47 Spinning rod animation/Text
47 Sum to 100
47 UTF-8 encode and decode
46 Approximate equality
46 Bulls and cows/Player
46 Casting out nines
46 Compiler/lexical analyzer
46 Flipping bits game
46 Keyboard input/Flush the keyboard buffer
46 Knapsack problem/Bounded
46 Loops/Wrong ranges
46 Numbers divisible by their individual digits, but not by the product of their digits.
46 Parsing/Shunting-yard algorithm
46 Rosetta Code/Count examples
46 Sorting Algorithms/Circle Sort
46 Subtractive generator
46 Terminal control/Dimensions
46 Twelve statements
45 Abbreviations, simple
45 Atomic updates O
45 Brazilian numbers
45 Carmichael 3 strong pseudoprimes
45 Fivenum
45 Permutations by swapping
45 Sailors, coconuts and a monkey problem
45 Secure temporary file
45 Sorting algorithms/Patience sort
45 Strange numbers
45 Substitution cipher
45 Truth table
44 Balanced ternary
44 Base 16 numbers needing a to f
44 Coprimes
44 Cycle detection
44 Find words which contains more than 3 e vowels
44 Hickerson series of almost integers
44 Humble numbers
44 Idiomatically determine all the lowercase and uppercase letters
44 Input/Output for pairs of numbers
44 Julia set
44 Long primes
44 MD5/Implementation
44 Pascal's triangle/Puzzle
44 Percentage difference between images
44 Ranking methods
44 Read a file character by character/UTF8
44 S-expressions
44 Sort a list of object identifiers
44 Special divisors
44 Summarize and say sequence
44 Type detection
44 Voronoi diagram
44 Yellowstone sequence
43 Calendar - for "REAL" programmers O
43 Combinations and permutations
43 Compare length of two strings
43 Cramer's rule
43 Euler's identity
43 Feigenbaum constant calculation
43 File extension is in extensions list
43 GUI enabling/disabling of controls
43 Inverted index
43 Lah numbers
43 Largest number divisible by its digits
43 Primorial numbers
43 Product of divisors
43 Pythagorean quadruples
43 Safe primes and unsafe primes
43 Table creation/Postal addresses
43 Terminal control/Inverse video
42 Brace expansion
42 Count how many vowels and consonants occur in a string
42 Find the intersection of a line with a plane
42 Four is magic
42 Input/Output for lines of text
42 Magic squares of doubly even order
42 Parallel calculations
42 Permutations with repetitions
42 Prime conspiracy
42 Scope/Function names and labels
42 Sequence: smallest number with exactly n divisors
42 Statistics/Normal distribution
42 Topswops
42 Triplet of three numbers
42 Variable-length quantity
41 Cheryl's birthday
41 Create a file on magnetic tape
41 Display a linear combination
41 Factorions
41 Find words which contains all the vowels
41 Function prototype O
41 Kahan summation
41 Knuth's algorithm S
41 Maze solving
41 Metered concurrency
41 Nice primes
41 Palindrome dates
41 Parametric polymorphism O O
41 Permutation test
41 Ray-casting algorithm
41 Rosetta Code/Find bare lang tags
41 Sorting algorithms/Strand sort
41 Terminal control/Hiding the cursor
41 Vampire number
40 Bitwise IO
40 Cuban primes
40 Find palindromic numbers in both binary and ternary bases
40 Integer roots
40 Koch curve
40 LU decomposition
40 Lychrel numbers
40 Matrix with two diagonals
40 Multiple regression
40 Numbers which binary and ternary digit sum are prime
40 Pathological floating point problems
40 Penney's game
40 Pentagram
40 Primes whose sum of digits is 25
40 Pythagoras tree
40 QR decomposition
40 Sequence: smallest number greater than previous term with exactly n divisors
40 Solve the no connection puzzle
40 Test integerness
40 Unique characters
39 Apply a digital filter (direct form II transposed)
39 Break OO privacy O
39 Check output device is a terminal
39 Church numerals
39 Cousin primes
39 Digit fifth powers
39 Events
39 Extra primes
39 Fibonacci word/fractal
39 Find prime numbers of the form n*n*n+2
39 Frobenius numbers
39 Implicit type conversion
39 Metronome
39 Minesweeper game
39 Multi-dimensional array
39 Mutex
39 Order disjoint list items
39 Parsing/RPN to infix conversion
39 Shift list elements to left by 3
39 Sutherland-Hodgman polygon clipping
39 Terminal control/Unicode output
38 Arithmetic-geometric mean/Calculate Pi
38 Bitmap/Bézier curves/Cubic
38 Change e letters to i in words
38 Constrained genericity O O O
38 Continued fraction/Arithmetic/Construct from rational number
38 Create an object at a given address O
38 Determine if two triangles overlap
38 Disarium numbers
38 Entropy/Narcissist
38 Find prime n such that reversed n is also prime
38 Find words with alternating vowels and consonants
38 Longest common suffix
38 Machine code
38 Minimum number of cells after, before, above and below NxN squares
38 Möbius function
38 Numerical integration/Gauss-Legendre Quadrature
38 Odd and square numbers
38 Pinstripe/Display
38 RSA code
38 Square-free integers
38 Subset sum problem
38 Sum of elements below main diagonal of matrix
38 Zumkeller numbers
37 AVL tree
37 Algebraic data types O
37 Alternade words
37 Bacon cipher
37 Chaocipher
37 Circular primes
37 Conjugate transpose
37 Dice game probabilities
37 Diversity prediction theorem
37 Eban numbers
37 Find words whose first and last three letters are equal
37 Length of an arc between two angles
37 MD4
37 Mersenne primes
37 Multiline shebang
37 Negative base numbers
37 Object serialization O
37 Old Russian measure of length
37 Ordered partitions
37 Smarandache prime-digital sequence
37 Sort the letters of string in alphabetical order
37 Strong and weak primes
37 Successive prime differences
36 Draw a rotating cube
36 Egyptian fractions
36 Faulhaber's triangle
36 First power of 2 that has leading decimal digits of 12
36 Gauss-Jordan matrix inversion
36 Modular arithmetic
36 Numbers with equal rises and falls
36 Parameterized SQL statement O
36 Pell's equation
36 Poker hand analyser
36 RIPEMD-160
36 Terminal control/Preserve screen
36 Twin primes
35 Angles (geometric), normalization and conversion
35 Ascending primes
35 Bitmap/Bézier curves/Quadratic
35 Check input device is a terminal O
35 Death Star
35 Decimal floating point number to binary
35 Galton box animation
35 Minimum positive multiple in base 10 using only 0 and 1
35 Numbers in base-16 representation that cannot be written with decimal digits
35 Partition an integer x into n primes
35 Partition function P
35 Peano curve
35 Polyspiral
35 Reflection/List properties O
35 Set puzzle
35 Solve a Hidato puzzle
35 Sorting algorithms/Cycle sort
35 Superellipse
35 Textonyms
35 Topic variable O
35 URL parser
35 Use another language to call a function
35 Word wheel
35 Zhang-Suen thinning algorithm
34 10001th prime
34 Bitmap/Histogram
34 Calkin-Wilf sequence
34 Code Golf: Code Golf
34 FTP
34 Jacobi symbol
34 Mian-Chowla sequence
34 Multiplicative order
34 Numbers with prime digits whose sum is 13
34 Parallel brute force
34 Parse command-line arguments
34 Pseudo-random numbers/Middle-square method
34 Sexy primes
34 Straddling checkerboard
34 Strange unique prime triplets
34 Terminal control/Cursor movement
34 Unprimeable numbers
34 Weird numbers
34 Wieferich primes
34 Word break problem
34 Write to Windows event log
34 Xiaolin Wu's line algorithm
33 Bin given limits
33 Bitcoin/address validation
33 Burrows–Wheeler transform
33 Chat server
33 Checkpoint synchronization
33 Color wheel
33 Common list elements
33 Decision tables
33 Esthetic numbers
33 Executable library
33 Fairshare between two and more
33 Find first and last set bit of a long integer
33 Find first missing positive
33 Law of cosines - triples
33 Long literals, with continuations
33 Mayan numerals
33 Numbers with same digit set in base 10 and base 16
33 Perlin noise
33 Pierpont primes
33 Pragmatic directives
33 Primes with digits in nondecreasing order
33 Range consolidation
33 Resistor mesh
33 Rosetta Code/Find unimplemented tasks
33 Set of real numbers
33 Show the (decimal) value of a number of 1s appended with a 3, then squared
33 Simple database
33 Super-d numbers
33 Words from neighbour ones
32 Chemical calculator
32 Common sorted list
32 Deconvolution/1D
32 Execute SNUSP
32 Faulhaber's formula
32 Find if a point is within a triangle
32 Find square difference
32 Generate random chess position
32 Generate random numbers without repeating a value
32 Go Fish
32 Keyboard macros
32 Memory layout of a data structure
32 Nonoblock
32 Numeric error propagation
32 Rosetta Code/Fix code tags
32 Stirling numbers of the second kind
32 Sum and product puzzle
32 Verify distribution uniformity/Chi-squared test
32 Video display modes O
32 Window creation/X11
31 A* search algorithm
31 Abelian sandpile model
31 Arena storage pool
31 Bioinformatics/Sequence mutation
31 Canonicalize CIDR
31 Chebyshev coefficients
31 Check Machin-like formulas
31 Compiler/virtual machine interpreter
31 Find words which contain the most consonants
31 Finite state machine
31 First class environments
31 HTTPS/Authenticated
31 Hunt the Wumpus
31 Magnanimous numbers
31 Minimum numbers of three lists
31 Plasma effect
31 Ramsey's theorem
31 State name puzzle
31 Stirling numbers of the first kind
31 Stream merge
31 Summarize primes
31 Sylvester's sequence
31 The ISAAC cipher
31 Unique characters in each string
31 Update a configuration file
30 Birthday problem
30 Day of the week of Christmas and New Year
30 De Bruijn sequences
30 Distinct power numbers
30 Doomsday rule
30 Fermat numbers
30 First 9 prime Fibonacci number
30 Formal power series
30 Honeycombs
30 Increasing gaps between consecutive Niven numbers
30 Kronecker product based fractals
30 Maximum difference between adjacent elements of list
30 Motzkin numbers
30 N-smooth numbers
30 Random Latin squares
30 Reflection/List methods O
30 Sierpinski pentagon
30 Table creation
30 Teacup rim text
29 Active Directory/Connect
29 Cut a rectangle
29 Find largest left truncatable prime in a given base
29 Find minimum number of coins that make a given value
29 First perfect square in base n with n unique digits
29 Fraction reduction
29 Harmonic series
29 Merge and aggregate datasets
29 Monads/Maybe monad
29 Natural sorting
29 Numbers in base 10 that are palindromic in bases 2, 4, and 16
29 Positive decimal integers with the digit 1 occurring exactly twice
29 Safe addition
29 Same fringe
29 Shortest common supersequence
29 Solve a Holy Knight's tour
29 Sorting algorithms/Cocktail sort with shifting bounds
29 Sunflower fractal
29 Superpermutation minimisation
29 Thiele's interpolation formula
29 World Cup group stage
28 Almkvist-Giullera formula for pi
28 Audio alarm
28 Biorhythms
28 Card shuffles
28 Cipolla's algorithm
28 Distributed programming
28 Find squares n where n+1 is prime
28 Fixed length records
28 Idiomatically determine all the characters that can be used for symbols
28 Image convolution
28 Intersecting number wheels
28 Largest prime factor
28 Minimum multiple of m where digital sum equals m
28 Mosaic matrix
28 Nautical bell
28 Next highest int from digits
28 Odd words
28 Order by pair comparisons
28 Palindromic gapful numbers
28 Paraffins
28 Piprimes
28 Play recorded sounds
28 Playfair cipher
28 Pseudo-random numbers/PCG32
28 Reverse the order of lines in a text file while preserving the contents of each line
28 Sequence of primorial primes
28 Sierpinski arrowhead curve
28 Sleeping Beauty problem
28 Snake and ladder
28 Tonelli-Shanks algorithm
28 Welch's t-test
28 Yahoo! search interface
27 Base58Check encoding
27 Changeable words
27 Cistercian numerals
27 Coprime triplets
27 Elliptic curve arithmetic
27 Erdős-primes
27 Exactly three adjacent 3 in lists
27 Function frequency
27 Kolakoski sequence
27 Largest five adjacent number
27 Last list item
27 Linux CPU utilization
27 Make a backup file
27 Matrix chain multiplication
27 Mind boggling card trick
27 Monads/List monad
27 Neighbour primes
27 Numeric separator syntax
27 Parse an IP Address
27 Percolation/Mean run density
27 Prime numbers which contain 123
27 RCRPG
27 Ramer-Douglas-Peucker line simplification
27 Self numbers
27 Simulate input/Keyboard
27 Sudan function
27 Sum of primes in odd positions is prime
27 Sum of square and cube digits of an integer are primes
27 Total circles area
27 UPC
26 Append numbers at same position in strings
26 Consecutive primes with ascending or descending differences
26 Deming's funnel
26 Exponentiation with infix operators in (or operating on) the base
26 Hough transform
26 K-means++ clustering
26 List rooted trees
26 Lucky and even lucky numbers
26 Magic squares of singly even order
26 Markov chain text generator
26 Orbital elements
26 Padovan sequence
26 Palindromic primes
26 Permutations/Rank of a permutation
26 Prime words
26 Reverse the gender of a string
26 Snake
26 Special neighbor primes
26 Spelling of ordinal numbers
26 Summation of primes
25 15 puzzle solver
25 ASCII art diagram converter
25 Abelian sandpile model/Identity
25 Assertions in design by contract
25 Create an object/Native demonstration O
25 Descending primes
25 Elementary cellular automaton/Random number generator
25 File size distribution
25 Find adjacent primes which differ by a square integer
25 Four sides of square
25 Index finite lists of positive integers
25 Joystick position
25 Kosaraju
25 Mastermind
25 Next special primes
25 Odd squarefree semiprimes
25 Palindromic primes in base 16
25 Prime triplets
25 Pseudo-random numbers/Xorshift star
25 Record sound
25 Reflection/Get source O
25 SOAP
25 Sine wave
25 Smallest power of 6 whose decimal expansion contains n
25 Solve a Hopido puzzle
25 Solve a Numbrix puzzle
25 Ulam numbers
24 Active Directory/Search for a user
24 Addition chains
24 Bilinear interpolation
24 Commatizing numbers
24 Compiler/syntax analyzer
24 EKG sequence convergence
24 Find duplicate files
24 Levenshtein distance/Alignment
24 Longest substrings without repeating characters
24 Main step of GOST 28147-89
24 Native shebang
24 Perceptron
24 Permuted multiples
24 Print debugging statement
24 Quadrat special primes
24 Rare numbers
24 Sequence: nth number with exactly n divisors
24 Smallest multiple
24 Sokoban
24 Solve triangle solitare puzzle
24 Steady squares
24 Sum data type
24 Untrusted environment
24 Zeckendorf arithmetic
23 Arithmetic numbers
23 Compiler/code generator
23 Concatenate two primes is also prime
23 Jacobsthal numbers
23 Knuth's power tree
23 Latin Squares in reduced form
23 Line circle intersection
23 Median filter
23 N-body problem
23 Names to numbers
23 Nested templated data
23 Nonogram solver
23 Pig the dice game/Player
23 Polynomial synthetic division
23 Pseudo-random numbers/Splitmix64
23 Sierpinski curve
23 Singly-linked list/Element removal
23 Substring primes
23 Useless instructions
23 Variable declaration reset
23 Vibrating rectangles
23 Vigenère cipher/Cryptanalysis
23 Vogel's approximation method
23 Wilson primes of order n
22 Bitcoin/public point to address
22 Cubic special primes
22 Cyclops numbers
22 Data Encryption Standard
22 Draw pixel 2
22 Eertree
22 Elementary cellular automaton/Infinite length
22 Getting the number of decimals
22 Matrix digital rain
22 Metallic ratios
22 Monads/Writer monad
22 Montgomery reduction
22 Numbers whose count of divisors is prime
22 Peaceful chess queen armies
22 Primes whose first and last number is 3
22 Pseudo-random numbers/Combined recursive generator MRG32k3a
22 Selective file copy
22 Simulate input/Mouse
22 The sieve of Sundaram
22 Window management
21 Air mass
21 Arithmetic coding/As a generalized change of radix
21 Cullen and Woodall numbers
21 Cyclotomic polynomial
21 Imaginary base numbers
21 Jaro-Winkler distance
21 Juggler sequence
21 Just in time processing on a character stream
21 K-d tree
21 Largest difference between adjacent primes
21 Nimber arithmetic
21 Own digits power sum
21 Padovan n-step number sequences
21 Pancake numbers
21 Percolation/Site percolation
21 Permutations with some identical elements
21 Practical numbers
21 Primes - allocate descendants to their ancestors
21 Primes which contain only one odd digit
21 Readline interface
21 Separate the house number from the street name
21 Special factorials
21 Special pythagorean triplet
21 Transportation problem
21 Word ladder
20 Color quantization
20 Euler's constant 0.5772...
20 Legendre prime counting function
20 Logistic curve fitting in epidemiology
20 Most frequent k chars distance
20 P-value correction
20 Percolation/Mean cluster density
20 Print itself
20 SQL-based authentication
20 Sierpinski square curve
20 Smallest numbers
20 Terminal control/Positional read
20 Word search
20 Wordle comparison
19 Aspect oriented programming
19 Bitmap/Read an image through a pipe
19 Brilliant numbers
19 Chernick's Carmichael numbers
19 Code segment unload
19 Collect and sort square numbers in ascending order from three lists
19 Compare sorting algorithms' performance
19 Compiler/AST interpreter
19 Determine sentence type
19 Find URI in text
19 HTTPS/Client-authenticated O
19 Largest palindrome product
19 Largest product in a grid
19 Magic constant
19 Minimum primes
19 Proof O O
19 SHA-256 Merkle tree
19 Selectively replace multiple instances of a character within a string
19 Self-hosting compiler O
19 Simulated annealing
19 Soloway's recurring rainfall
19 Sort primes from list to a list
19 Square root by hand
19 Sum of two adjacent numbers are primes
19 Tarjan
18 Anadromes
18 Banker's algorithm
18 Bitmap/PPM conversion through a pipe
18 Deceptive numbers
18 Free polyominoes enumeration
18 Goldbach's comet
18 Long stairs
18 Longest palindromic substrings
18 Minimal steps down to 1
18 Modified random distribution
18 NYSIIS
18 Non-transitive dice
18 Numerical integration/Adaptive Simpson's method
18 Particle swarm optimization
18 Percolation/Bond percolation
18 Prime numbers p for which the sum of primes less than or equal to p is prime
18 Quoting constructs
18 Ramanujan's constant
18 Rendezvous O
18 Retrieve and search chat history
18 Safe and Sophie Germain primes
18 Safe mode
18 Suffix tree
18 Two bullet roulette
18 VList
18 XML validation
17 Achilles numbers
17 Bioinformatics/Subsequence
17 Canny edge detector
17 Curzon numbers
17 Fortunate numbers
17 Four is the number of letters in the ...
17 Geometric algebra
17 Overloaded operators
17 Penrose tiling
17 Pseudorandom number generator image
17 Sorting algorithms/Tree sort on a linked list
17 Three word location
16 Camel case and snake case
16 Colorful numbers
16 Distribution of 0 digits in factorial series
16 Interactive help
16 OpenWebNet password
16 Pandigital prime
16 Prime triangle
16 Rodrigues’ rotation formula
16 Run as a daemon or service
16 Text completion
16 Topological sort/Extracted top item
16 Tree from nesting levels
16 Two's complement
15 Composite numbers k with no single digit factors whose factors are all substrings of k
15 Conjugate a Latin verb
15 Continued fraction/Arithmetic/G(matrix ng, continued fraction n)
15 Curve that touches three points
15 Earliest difference between prime gaps
15 Factorial base numbers indexing permutations of a collection
15 Functional coverage tree
15 Geohash
15 Gradient descent
15 Minkowski question-mark function
15 Multi-base primes
15 One-time pad
15 Pentomino tiling
15 Periodic table
15 Pisano period
15 Railway circuit
15 Ruth-Aaron numbers
15 Untouchable numbers
15 XXXX redacted
14 Audio frequency generator
14 Checksumcolor
14 Colour pinstripe/Printer
14 Deconvolution/2D+
14 Display an outline as a nested table
14 Duffinian numbers
14 Equal prime and composite sums
14 Erdös-Selfridge categorization of primes
14 Generalised floating point addition
14 Greed
14 Hex words
14 Hourglass puzzle
14 Klarner-Rado sequence
14 Launch rocket with countdown and acceleration in stdout
14 Rhonda numbers
14 Set right-adjacent bits
14 Tetris
14 Tropical algebra overloading
14 Unit testing
14 Using a speech engine to highlight words
14 Verhoeff algorithm
14 War card game
13 Binary coded decimal
13 Catmull–Clark subdivision surface
13 Count the coins/0-1
13 Euclid-Mullin sequence
13 Execute CopyPasta Language
13 Faces from a mesh
13 Fibonacci matrix-exponentiation
13 Find Chess960 starting position identifier
13 Giuga numbers
13 Graph colouring
13 Iterators
13 Polynomial derivative
13 Powerful numbers
13 Spoof game
13 Time-based one-time password algorithm
12 16 puzzle game
12 ADFGVX cipher
12 Combinations with repetitions/Square digit chain
12 Distinct palindromes within decimal numbers
12 External sort
12 French Republican calendar
12 Gotchas
12 Home primes
12 Mayan calendar
12 Morpion solitaire
12 Pinstripe/Printer
12 Range modifications
12 Repunit primes
12 Rosetta Code/Rank languages by number of users
12 Rosetta Code/Tasks without examples
12 Solve hanging lantern problem
12 Square form factorization
12 Starting a web browser
12 Suffixation of decimal numbers
12 Terminal control/Restricted width positional input/No wrapping
12 Tree datastructures
12 Wordiff
11 Arithmetic derivative
11 Bioinformatics/Global alignment
11 Brace expansion using ranges
11 Discrete Fourier transform
11 Execute Computer/Zero O
11 IPC via named pipe
11 Jaccard index
11 Numerical and alphabetical suffixes
11 OpenGL/Utah teapot
11 Pan base non-primes
11 Parse EBNF
11 Ramanujan primes
11 Resistance calculator
11 Riordan numbers
11 Round-robin tournament schedule
11 Simple turtle graphics
11 Sort an outline at every level
11 Terminal control/Restricted width positional input/With wrapping
11 URL shortener
11 Ultra useful primes
10 Elliptic Curve Digital Signature Algorithm
10 Integer long division
10 N-queens minimum and knights and bishops
10 Resistance network calculator
10 Robots
10 Solve equations with substitution method
10 Tamagotchi emulator
10 Text to HTML
10 User defined pipe and redirection operators
9 B-spline
9 Black box
9 Compiler/Verifying syntax
9 Continued fraction/Arithmetic/G(matrix ng, continued fraction n1, continued fraction n2)
9 Doubly-linked list/Element removal
9 Factorial primes
9 Fibonacci heap
9 Gaussian primes
9 Multidimensional Newton-Raphson method
9 Numbers which are not the sum of distinct squares
9 OpenGL pixel shader
9 Pell numbers
9 Price list behind API
9 Ramanujan primes/twins
9 Rosetta Code/Run examples
9 Search in paragraph's text
9 Smallest enclosing circle problem
8 Addition-chain exponentiation
8 Audio overlap loop
8 Dating agency
8 Hexapawn
8 Horse racing
8 I'm a software engineer, get me out of here
8 Isograms and heterograms
8 Marching squares
8 P-Adic numbers, basic
8 Pairs with common factors
8 Peripheral drift illusion
8 Quad-power prime seeds
8 Random sentence from book
8 Raster bars
8 Recursive descent parser generator
8 Remote agent/Agent logic
8 Remote agent/Simulation
8 Segmentation fault protection
8 Sieve of Pritchard
8 Strassen's algorithm
8 Super-Poulet numbers
8 Wagstaff primes
8 Wasteful, equidigital and frugal numbers
8 Waveform analysis/Doh ray me
8 WiktionaryDumps to words
7 Babylonian spiral
7 Bifid cipher
7 Boids
7 Boyer-Moore string search
7 Chess player
7 Compiler/Simple file inclusion pre processor
7 Erdős-Nicolas numbers
7 Fermat pseudoprimes
7 Knuth-Morris-Pratt string search
7 Latin Squares in reduced form/Randomizing using Jacobson and Matthews’ Technique
7 Penta-power prime seeds
7 Process SMIL directives in XML data
7 Remote agent/Agent interface
7 Smallest number k such that k+2^m is composite for all m less than k
7 Worthwhile task shaving
6 Autogram checker
6 Create an executable for a program in an interpreted language
6 Create your own text control codes
6 Divide a rectangle into a number of unequal triangles
6 Dominoes
6 Engel expansion
6 OLE automation O
6 P-Adic square roots
6 Particle fountain
6 Red black tree sort
6 Rosetta Code/List authors of task descriptions
6 Solve a Rubik's cube
6 Transliterate English text using the Greek alphabet
6 Use a REST API
6 Wave function collapse
5 Anagram generator
5 Cycles of a permutation
5 Erdős–Woods numbers
5 Generalised floating point multiplication
5 Multiton
5 Number triplets game
5 Solving coin problems
5 Unicode polynomial equation
5 Waveform analysis/Top and tail
5 Weather routing
4 15 puzzle game in 3D
4 Blackjack strategy
4 Boustrophedon transform
4 CLI-based maze-game
4 Compiler/Preprocessor
4 Cross compilation O O
4 Diophantine linear system solving
4 IRC gateway
4 Ukkonen’s suffix tree construction
4 Uno (card game)
4 Vidir
3 3d turtle graphics
3 Elevator simulation
3 Sanitize user input
3 WebGL rotating F