Rosetta Code/Count examples/Full list/Tier 4

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Revision as of 19:28, 16 July 2023 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 Rust          ㉜ Scala         ㉝ Lua           ㉞ PicoLisp      ㉟ F_Sharp      
    ㊱ XPL0          ㊲ AutoHotkey    ㊳ Ring          ㊴ JavaScript    ㊵ Arturo       
As of 2023-07-16T19:26:18Z :: Tasks: 1230 :: Draft Tasks:413 :: Total Tasks: 1643 :: Total Examples: 92669
Count Task
575 Hello world/Text
372 99 bottles of beer
371 FizzBuzz
350 100 doors
302 Comments
298 Factorial
298 Fibonacci sequence
293 A+B
287 Empty program
253 Loops/Infinite
246 Reverse a string
243 Arrays
240 Ackermann function
240 Function definition
233 Loops/For
227 Loops/While
226 Conditional structures
218 Array concatenation
213 Arithmetic/Integer
213 Greatest element of a list
201 Even or odd
201 Repeat a string
200 Increment a numerical string
199 Greatest common divisor
198 Sieve of Eratosthenes
197 Averages/Arithmetic mean
194 Array length
192 Copy a string
192 Hello world/Graphical
191 String concatenation
190 Binary digits
190 Towers of Hanoi
189 Sum and product of an array
187 Integer comparison
186 Boolean values
185 Loops/Downward for
184 Apply a callback to an array
184 Hello world/Newline omission
183 Character codes
183 Integer sequence
182 Rot-13
180 String length
178 Palindrome detection
178 Tokenize a string
177 String case
176 Empty string
176 Loops/For with a specified step
175 Loops/Break
175 Sum of a series
174 Loops/Foreach
173 Quine
173 Sum of squares
172 Dot product
170 Logical operations
169 Filter
167 Loops/Do-while
164 Hailstone sequence
162 Associative array/Creation
162 Generic swap
161 Remove duplicate elements
160 Loops/N plus one half
160 Sorting algorithms/Quicksort
158 Sort an integer array
157 Leap year
156 Caesar cipher
155 Execute a system command
155 Generate lower case ASCII alphabet
155 Luhn test of credit card numbers
155 System time
154 Command-line arguments
154 Determine if a string is numeric
152 Factors of an integer
152 Stack
151 Higher-order functions
151 Zero to the zero power
150 User input/Text
149 Guess the number
149 Hello world/Standard error
149 Loops/Continue
148 Bitwise operations
147 Read entire file
147 Sorting algorithms/Bubble sort
146 ABC problem
146 Create a file
146 Loop over multiple arrays simultaneously
146 Primality by trial division
145 Check that file exists
145 Mutual recursion
144 Least common multiple
144 Roman numerals/Encode
143 Count in octal
143 Ethiopian multiplication
143 Sleep
142 Balanced brackets
140 Literals/String
139 Day of the week
139 File input/output
139 Happy numbers
139 Mandelbrot set
139 Program termination
138 Substring
138 Variables
137 Date format
137 Literals/Integer
137 Pascal's triangle
134 Compound data type
133 Count occurrences of a substring
133 Function composition
133 Include a file O
133 Knuth shuffle
132 Loops/Nested
132 Sorting algorithms/Insertion sort
130 Detect division by zero
130 N-queens problem
130 Null object
130 Real constants and functions
130 String matching
129 File size
129 Matrix transposition
129 Pick random element
128 Averages/Root mean square
128 Babbage problem
128 Case-sensitivity of identifiers
128 Read a file line by line
127 Associative array/Iteration
127 Delete a file
127 Guess the number/With feedback
127 Return multiple values
126 Align columns
126 Averages/Median
126 Letter frequency
126 Matrix multiplication
126 Strip a set of characters from a string
125 Anagrams
125 Binary search
125 Look-and-say sequence
125 Permutations
124 Conway's Game of Life
124 Flatten a list
124 Hash from two arrays
124 Input loop
124 Perfect numbers
123 Identity matrix
122 Haversine formula
122 String append
121 Call a function
121 Environment variables
121 Roman numerals/Decode
120 Assertions
120 Classes
120 Harshad or Niven series
120 Sierpinski triangle
119 Find limit of recursion
119 String interpolation (included)
119 Substring/Top and tail
118 HTTP
118 Pangram checker
118 Rename a file
117 Arithmetic/Complex
117 N'th
117 Temperature conversion
117 Variadic function
116 Horner's rule for polynomial evaluation
116 Search a list
115 Bulls and cows
115 Hostname
115 Infinity
115 Levenshtein distance
115 Multiplication tables
115 Run-length encoding
115 The Twelve Days of Christmas
114 Comma quibbling
114 Evaluate binomial coefficients
114 Formatted numeric output
114 Strip whitespace from a string/Top and tail
113 Accumulator factory
113 Anonymous recursion
113 Program name
113 Reverse words in a string
113 Sum multiples of 3 and 5
112 Averages/Pythagorean means
112 Ordered words
112 Zig-zag matrix
111 Calculating the value of e
111 Catalan numbers
111 Create a two-dimensional array at runtime
111 String prepend
110 Combinations
110 Middle three digits
110 Queue/Definition
110 Random numbers
110 Sorting algorithms/Merge sort
110 Sum digits of an integer
110 Trigonometric functions
109 Digital root
109 Exceptions
109 Sequence of non-squares
108 Vector products
107 Arbitrary-precision integers (included) O
107 Shell one-liner O
106 Enumerations
106 Short-circuit evaluation
105 24 game
105 Arithmetic-geometric mean
105 Hello world/Newbie
105 Prime decomposition
105 Regular expressions
105 Sorting algorithms/Selection sort
105 Time a function
104 Abundant, deficient and perfect number classifications
104 Power set
104 Show ASCII table
103 Amicable pairs
103 Evolutionary algorithm
103 Walk a directory/Non-recursively
102 Collections
102 Execute Brain****
102 Gray code
102 Symmetric difference
101 Averages/Mode
101 Map range
101 Sorting algorithms/Gnome sort
101 Tree traversal
100 Create an HTML table
100 Exponentiation operator
100 Interactive programming (repl) O
99 Hamming numbers
99 Hofstadter Q sequence
99 Nth root
99 One-dimensional cellular automata
99 Range expansion
99 Sort using a custom comparator
99 String comparison
99 Y combinator
98 MD5
98 Modular inverse
97 First-class functions
97 Langton's ant
97 Monty Hall problem
97 Random number generator (included)
97 Sorting algorithms/Cocktail sort
97 Sorting algorithms/Heapsort
96 Address of a variable O
96 Entropy
96 Number reversal game
96 Sierpinski carpet
95 Catamorphism
95 Forward difference
95 Inheritance/Single
95 Range extraction
95 Terminal control/Clear the screen
94 Cumulative standard deviation
94 JSON
94 Last Friday of each month
94 Menu
94 Split a character string based on change of character
93 Abstract type O
93 Averages/Simple moving average
93 CSV data manipulation
93 Compare a list of strings
93 Number names
93 Repeat
93 Simple windowed application
93 Sorting algorithms/Bogosort
92 Five weekends
92 Floyd's triangle
91 Greatest subsequential sum
91 Literals/Floating point
91 Non-decimal radices/Convert
91 Set
90 Box the compass
90 Count in factors
90 Hello world/Line printer
90 Operator precedence
90 URL decoding
90 Window creation
89 Anti-primes
89 CSV to HTML translation
89 Long multiplication
89 Munchausen numbers
89 Playing cards
89 Queue/Usage
89 Sort an array of composite structures
88 Department numbers
88 Order two numerical lists
88 Population count
88 Proper divisors
88 SEDOLs
88 Top rank per group
88 Walk a directory/Recursively
88 Word wrap
87 Almost prime
87 Bitmap
87 Find the last Sunday of each month
87 Here document
87 Price fraction
87 Read a specific line from a file
87 Strip comments from a string
87 URL encoding
86 Find common directory path
86 Josephus problem
86 Jump anywhere O
86 Singly-linked list/Traversal
85 CRC-32
85 Closures/Value capture
85 Count the coins
85 Extend your language
85 File modification time
85 Jensen's Device
85 Knapsack problem/0-1
85 Lucas-Lehmer test
85 Multifactorial
85 Sorting algorithms/Shell sort
85 Thue-Morse
84 Call an object method
84 Convert seconds to compound duration
84 Find the missing permutation
84 Monte Carlo methods
84 Priority queue
84 Spiral matrix
84 Terminal control/Ringing the terminal bell
83 15 puzzle game
83 Additive primes
83 Angle difference between two bearings
83 Dragon curve
83 Dynamic variable names O
83 Introspection
83 Kaprekar numbers
83 Pythagorean triples
83 Sockets
82 100 prisoners
82 Concurrent computing
82 Fibonacci n-step number sequences
82 Keyboard input/Obtain a Y or N response
82 Man or boy test
82 Old lady swallowed a fly
82 Pernicious numbers
82 Pi
82 Sequence of primes by trial division
82 Show the epoch O
82 Sorting algorithms/Counting sort
82 Special characters
82 Take notes on the command line
82 Web scraping
82 XML/Input
81 Animation
81 Call a foreign-language function
81 Empty directory
81 Equilibrium index
81 Linear congruential generator
81 Magic squares of odd order
81 Sorting algorithms/Comb sort
81 Vigenère cipher
80 Anagrams/Deranged anagrams
80 Gamma function
80 Quaternion type
80 Rock-paper-scissors
80 Semordnilap
80 Singly-linked list/Element definition
80 Sort disjoint sublist
80 Soundex
80 Write entire file
79 Attractive numbers
79 Currying
79 Date manipulation
79 Flow-control structures
79 Guess the number/With feedback (player)
79 Hello world/Web server
79 Non-decimal radices/Output
79 Phrase reversals
79 SHA-1
79 Sudoku
79 Unicode variable names
78 Averages/Mean angle
78 Benford's law
78 Calendar
78 Draw a sphere
78 Execute HQ9+
78 List comprehensions
78 Read a configuration file
78 Rep-string
77 AKS test for primes
77 Enforced immutability
77 Fractal tree
77 Unix/ls
77 Van der Corput sequence
76 Chinese remainder theorem
76 Damm algorithm
76 Euler method
76 Exponentiation order
76 Four bit adder
76 Roots of unity
76 Self-describing numbers
76 Semiprime
76 Van Eck sequence
76 Write float arrays to a text file
75 Bitmap/Bresenham's line algorithm
75 Combinations with repetitions
75 Exceptions/Catch an exception thrown in a nested call
75 I before E except after C
75 Jewels and stones
75 Largest int from concatenated ints
75 Multiple distinct objects
75 SHA-256
75 Sort three variables
75 Sorting algorithms/Stooge sort
75 Special variables
75 Stair-climbing puzzle
75 Stern-Brocot sequence
74 Catalan numbers/Pascal's triangle
74 General FizzBuzz
74 ISBN13 check digit
74 Narcissistic decimal number
74 Nested function
74 Numerical integration
74 Parsing/RPN calculator algorithm
74 Square but not cube
74 Strip control codes and extended characters from a string
74 Trabb Pardo–Knuth algorithm
73 Amb
73 Barnsley fern
73 Constrained random points on a circle
73 Longest common subsequence
73 Maze generation
73 Named parameters O
73 Polymorphism
73 Runtime evaluation
73 Zeckendorf number representation
72 Arithmetic/Rational
72 Compile-time calculation O O
72 Fast Fourier transform
72 IBAN
72 Probabilistic choice
72 Sorting algorithms/Pancake sort
72 Text processing/Max licenses in use
72 Variable size/Get O
72 Word frequency
72 Yin and yang
71 4-rings or 4-squares puzzle
71 Continued fraction
71 Determine if a string is collapsible
71 Euler's sum of powers conjecture
71 Gapful numbers
71 Get system command output
71 Isqrt (integer square root) of X
71 Modular exponentiation
70 Abundant odd numbers
70 Circles of given radius through two points
70 Closest-pair problem
70 Dutch national flag problem
70 Host introspection O
70 Magic 8-ball
70 Memory allocation O
70 Morse code
70 One of n lines in a file
70 Remove lines from a file
70 Roots of a function
70 Singly-linked list/Element insertion
70 Sort stability
70 Subleq
70 Two sum
69 Binary strings
69 Cholesky decomposition
69 Extract file extension
69 Fork O
69 Leonardo numbers
69 RPG attributes generator
69 Reduced row echelon form
69 Write language name in 3D ASCII
68 Animate a pendulum
68 Best shuffle
68 Chinese zodiac
68 Documentation
68 Factors of a Mersenne number
68 Integer overflow
68 Non-decimal radices/Input
68 Runge-Kutta method
68 Sorting algorithms/Sleep sort
68 Tau function
68 Two identical strings
68 XML/Output
67 9 billion names of God the integer
67 Base64 decode data
67 CUSIP
67 Draw a cuboid
67 Emirp primes
67 Long year
67 McNuggets problem
67 Mouse position
67 Optional parameters
67 Plot coordinate pairs
67 Quickselect algorithm
67 Roots of a quadratic function
67 Undefined values
66 Cartesian product of two or more lists
66 Draw a clock
66 Globally replace text in several files
66 HTTPS
66 Hofstadter-Conway $10,000 sequence
66 Inheritance/Multiple O
66 Longest common prefix
66 Remove vowels from a string
66 Terminal control/Display an extended character
66 Tic-tac-toe
66 Vector
65 Arithmetic evaluation
65 Averages/Mean time of day
65 Base64 encode data
65 Bitmap/Write a PPM file
65 Determine if a string has all the same characters
65 Knapsack problem/Continuous
65 Knight's tour
65 Ludic numbers
65 Smith numbers
65 Ternary logic
65 Test a function
64 Cantor set
64 Copy stdin to stdout
64 DNS query
64 Draw a pixel
64 FASTA format
64 Generator/Exponential
64 JortSort
64 Miller–Rabin primality test
64 Pascal matrix generation
64 Primality by Wilson's theorem
64 Totient function
64 Unicode strings
63 2048
63 24 game/Solve
63 Disarium numbers
63 Horizontal sundial calculations
63 Huffman coding
63 Knapsack problem/Unbounded
63 Maximum triangle path sum
63 Sattolo cycle
63 Truncatable primes
62 Brownian tree
62 Discordian date
62 Farey sequence
62 Fusc sequence
62 Iterated digits squaring
62 Kernighans large earthquake problem
62 Left factorials
62 Longest common substring
62 Mad Libs
62 Matrix-exponentiation operator
62 Nim game
62 Partial function application
62 Sum of first n cubes
62 Tau number
61 Add a variable to a class instance at runtime O O
61 Code Golf: Code Golf
61 Define a primitive data type
61 Dinesman's multiple-dwelling problem
61 Doubly-linked list/Element definition
61 Grayscale image
61 LZW compression
61 Odd word problem
61 Random number generator (device)
61 Scope modifiers
61 Sorting algorithms/Bead sort
61 Sum of divisors
61 Topological sort
61 Truncate a file
61 User input/Graphical
60 Convert decimal number to rational
60 Fibonacci word
60 Hash join
60 Keyboard input/Keypress check
60 Loops/With multiple ranges
60 Multisplit
60 Pointers and references O
60 Stem-and-leaf plot
60 Terminal control/Coloured text
60 Unbias a random generator
59 Archimedean spiral
59 Bernoulli numbers
59 Call a function in a shared library
59 Days between dates
59 Deal cards for FreeCell
59 Dijkstra's algorithm
59 Find the intersection of two lines
59 Loops/Increment loop index within loop body
59 Runtime evaluation/In an environment
59 Singleton
59 Sorting algorithms/Permutation sort
59 Tokenize a string with escaping
59 Universal Turing machine
59 Words containing "the" substring
58 Associative array/Merging
58 Delegates
58 Determine if a string has all unique characters
58 Forest fire
58 Modulinos
58 Perfect shuffle
58 Shoelace formula for polygonal area
58 Stack traces
57 Abbreviations, automatic
57 Chaos game
57 Extreme floating point values
57 First-class functions/Use numbers analogously
57 Handle a signal
57 Holidays related to Easter
57 Inverted syntax O O
57 Password generator
57 Rosetta Code/Rank languages by popularity
57 Search a list of records
57 Sort numbers lexicographically
57 Validate International Securities Identification Number
57 XML/XPath
56 Compare length of two strings
56 Fractran
56 Heronian triangles
56 Naming conventions
56 Non-continuous subsequences
56 Perfect totient numbers
56 Pig the dice game
56 Rate counter
56 Seven-sided dice from five-sided dice
56 Sierpinski triangle/Graphical
56 Statistics/Basic
56 Water collected between towers
55 Egyptian division
55 Kronecker product
55 Largest proper divisor of n
55 Longest increasing subsequence
55 Move-to-front algorithm
55 Recaman's sequence
55 Send email O
55 Strip block comments
55 Synchronous concurrency
55 Terminal control/Cursor positioning
55 XML/DOM serialization
54 Bell numbers
54 Doubly-linked list/Element insertion
54 Extensible prime generator
54 Gaussian elimination
54 Greyscale bars/Display
54 Halt and catch fire
54 Hofstadter Figure-Figure sequences
54 Jaro similarity
54 Polynomial regression
54 Smallest square that begins with n
54 Spinning rod animation/Text
54 Strange plus numbers
54 Text processing/2
54 The Name Game
54 Wireworld
54 Zebra puzzle
53 Average loop length
53 Bioinformatics/base count
53 Determine if a string is squeezable
53 Dining philosophers
53 Doubly-linked list/Traversal
53 GUI component interaction
53 Longest string challenge
53 Make directory path
53 Mertens function
53 Munching squares
53 Musical scale
52 Convex hull
52 Determinant and permanent
52 Digital root/Multiplicative digital root
52 Elementary cellular automaton
52 Execute a Markov algorithm
52 Generate Chess960 starting position
52 Metaprogramming O
52 Odd and square numbers
52 Stable marriage problem
52 Sum of the digits of n is substring of n
52 Text processing/1
52 Ulam spiral (for primes)
51 21 game
51 Aliquot sequence classifications
51 Append a record to the end of a text file
51 Doubly-linked list/Definition
51 Hilbert curve
51 Numbers divisible by their individual digits, but not by the product of their digits.
51 Respond to an unknown method call O O
51 Taxicab numbers
51 Text between
50 ABC words
50 Approximate equality
50 Bitmap/Flood fill
50 Casting out nines
50 Chowla numbers
50 Colour bars/Display
50 Floyd-Warshall algorithm
50 History variables
50 Idiomatically determine all the lowercase and uppercase letters
50 Image noise
50 Last letter-first letter
50 MAC vendor lookup
50 Polymorphic copy
50 Polynomial long division
50 Send an unknown method call O
50 Sparkline in unicode
50 Start from a main routine O O
50 Strange numbers
50 Substitution cipher
50 Visualize a tree
49 Abbreviations, easy
49 Active object
49 Bitmap/Midpoint circle algorithm
49 Bitmap/Read a PPM file
49 Colour pinstripe/Display
49 Element-wise operations
49 Find square difference
49 Find words which contains more than 3 e vowels
49 GUI/Maximum window dimensions
49 OpenGL
49 Set consolidation
49 Sorting algorithms/Radix sort
49 UTF-8 encode and decode
49 Variable size/Set O
49 Verify distribution uniformity/Naive
48 Continued fraction/Arithmetic/Construct from rational number
48 Deepcopy
48 Determine if only one instance is running
48 File extension is in extensions list
48 Humble numbers
48 Matrix with two diagonals
48 Narcissist
48 Problem of Apollonius
48 Sorting Algorithms/Circle Sort
48 Twelve statements
47 Brazilian numbers
47 Color of a screen pixel
47 Coprimes
47 Currency
47 Echo server
47 Factorions
47 Feigenbaum constant calculation
47 Fivenum
47 Flipping bits game
47 Knapsack problem/Bounded
47 Parsing/Shunting-yard algorithm
47 Permutations by swapping
47 Permutations/Derangements
47 Speech synthesis
47 Sum to 100
47 Terminal control/Dimensions
47 Type detection
46 Abbreviations, simple
46 Bulls and cows/Player
46 Compiler/lexical analyzer
46 Count how many vowels and consonants occur in a string
46 Extra primes
46 Julia set
46 Keyboard input/Flush the keyboard buffer
46 Largest number divisible by its digits
46 Loops/Wrong ranges
46 Nice primes
46 Palindrome dates
46 Pascal's triangle/Puzzle
46 Product of divisors
46 Rosetta Code/Count examples
46 Secure temporary file
46 Sequence: smallest number with exactly n divisors
46 Shift list elements to left by 3
46 Sort a list of object identifiers
46 Sorting algorithms/Patience sort
46 Special divisors
46 Subtractive generator
46 Sudan function
46 Sutherland-Hodgman polygon clipping
46 Truth table
45 Atomic updates O
45 Base 16 numbers needing a to f
45 Combinations and permutations
45 Digit fifth powers
45 Display a linear combination
45 Find prime numbers of the form n*n*n+2
45 Input/Output for pairs of numbers
45 Lah numbers
45 MD5/Implementation
45 Primorial numbers
45 Pseudo-random numbers/Middle-square method
45 Pythagorean quadruples
45 Ranking methods
45 Read a file character by character/UTF8
45 S-expressions
45 Safe primes and unsafe primes
45 Sailors, coconuts and a monkey problem
45 Terminal control/Hiding the cursor
45 Triplet of three numbers
45 Variable-length quantity
45 Yellowstone sequence
44 10001th prime
44 Balanced ternary
44 Brace expansion
44 Carmichael 3 strong pseudoprimes
44 Cramer's rule
44 Cycle detection
44 Euler's identity
44 Fairshare between two and more
44 Find words which contains all the vowels
44 Frobenius numbers
44 GUI enabling/disabling of controls
44 Hickerson series of almost integers
44 Input/Output for lines of text
44 Integer roots
44 Long primes
44 Mersenne primes
44 Numerical integration/Adaptive Simpson's method
44 Percentage difference between images
44 Scope/Function names and labels
44 Summarize and say sequence
44 Terminal control/Inverse video
44 Unique characters
44 Voronoi diagram
43 Arithmetic-geometric mean/Calculate Pi
43 Ascending primes
43 Find prime n such that reversed n is also prime
43 Find squares n where n+1 is prime
43 Find the intersection of a line with a plane
43 Four is magic
43 Implicit type conversion
43 Inverted index
43 Kahan summation
43 Koch curve
43 Modular arithmetic
43 Permutations with repetitions
43 Prime conspiracy
43 Primes whose sum of digits is 25
43 Table creation/Postal addresses
43 Topswops
42 Calendar - for "REAL" programmers
42 Cheryl's birthday
42 Fibonacci word/fractal
42 Find words whose first and last three letters are equal
42 Function prototype O O
42 Golden ratio/Convergence
42 Knuth's algorithm S
42 Magic squares of doubly even order
42 Multiple regression
42 Parallel calculations O
42 Pathological floating point problems
42 Penney's game
42 Permutation test
42 Pythagoras tree
42 QR decomposition
42 Rosetta Code/Find bare lang tags
42 Sequence: smallest number greater than previous term with exactly n divisors
42 Sort the letters of string in alphabetical order
42 Statistics/Normal distribution
42 Test integerness
41 Apply a digital filter (direct form II transposed)
41 Bitmap/Bézier curves/Cubic
41 Bitwise IO
41 Church numerals
41 Cousin primes
41 Create a file on magnetic tape
41 Cuban primes
41 Find palindromic numbers in both binary and ternary bases
41 LU decomposition
41 Maze solving
41 Metered concurrency
41 Multi-dimensional array O
41 Numbers with prime digits whose sum is 13
41 Old Russian measure of length
41 Parametric polymorphism O
41 Pinstripe/Display
41 Ray-casting algorithm
41 Solve the no connection puzzle
41 Sorting algorithms/Strand sort
41 Steady squares
41 Sum of elements below main diagonal of matrix
41 Vampire number
41 Xiaolin Wu's line algorithm
40 Alternade words
40 Break OO privacy O
40 Dice game probabilities
40 Draw a rotating cube
40 Eban numbers
40 Find words with alternating vowels and consonants
40 Longest common suffix
40 Lychrel numbers
40 Metronome
40 Minimum number of cells after, before, above and below NxN squares
40 Numbers in base-16 representation that cannot be written with decimal digits
40 Numbers whose binary and ternary digit sums are prime
40 Numerical integration/Gauss-Legendre Quadrature
40 Parsing/RPN to infix conversion
40 Show the (decimal) value of a number of 1s appended with a 3, then squared
40 Smarandache prime-digital sequence
39 AVL tree
39 Chaocipher
39 Check output device is a terminal
39 Circular primes
39 Conjugate transpose
39 Constrained genericity O O
39 Determine if two triangles overlap
39 Entropy/Narcissist
39 Events
39 Find first missing positive
39 First 9 prime Fibonacci number
39 Length of an arc between two angles
39 Machine code
39 Minesweeper game
39 Mutex
39 Order disjoint list items
39 RSA code
39 Square-free integers
39 Strong and weak primes
39 Terminal control/Unicode output
39 Word wheel
38 Algebraic data types
38 Bitmap/Bézier curves/Quadratic
38 Change e letters to i in words
38 Create an object at a given address O
38 Diversity prediction theorem
38 Esthetic numbers
38 Find first and last set bit of a long integer
38 First power of 2 that has leading decimal digits of 12
38 Greedy algorithm for Egyptian fractions
38 Multiline shebang
38 Negative base numbers
38 Numbers with equal rises and falls
38 Object serialization
38 Ordered partitions
38 Parse command-line arguments
38 Pentagram
38 Polyspiral
38 RIPEMD-160
38 Sorting algorithms/Cycle sort
38 Strange unique prime triplets
38 Subset sum problem
38 Successive prime differences
38 Superellipse
38 Zumkeller numbers
37 Bacon cipher
37 Calkin-Wilf sequence
37 Canonicalize CIDR
37 Gauss-Jordan matrix inversion
37 Harmonic series
37 MD4
37 Magnanimous numbers
37 Maximum difference between adjacent elements of list
37 Motzkin numbers
37 Möbius function
37 Numbers with same digit set in base 10 and base 16
37 Peano curve
37 Pell's equation
37 Poker hand analyser
37 Textonyms
37 Twin primes
36 Abelian sandpile model
36 Burrows–Wheeler transform
36 Death Star
36 Decimal floating point number to binary
36 Faulhaber's triangle
36 Find if a point is within a triangle
36 Find words which contain the most consonants
36 Galton box animation
36 Law of cosines - triples
36 Minimum multiple of m where digital sum equals m
36 Partition function P
36 Perlin noise
36 Positive decimal integers with the digit 1 occurring exactly twice
36 Rosetta Code/Find unimplemented tasks
36 Sexy primes
36 Summarize primes
36 Terminal control/Cursor movement
36 Terminal control/Preserve screen
36 URL parser
36 Weird numbers
35 Angles (geometric), normalization and conversion
35 Arithmetic numbers
35 Bitmap/Histogram
35 Chemical calculator
35 Color wheel
35 Common list elements
35 Decision tables
35 Distinct power numbers
35 Exactly three adjacent 3 in lists
35 Jacobi symbol
35 Mian-Chowla sequence
35 Minimum numbers of three lists
35 Minimum positive multiple in base 10 using only 0 and 1
35 Mosaic matrix
35 Parameterized SQL statement
35 Partition an integer x into n primes
35 Primes with digits in nondecreasing order
35 Product of min and max prime factors
35 Reflection/List properties O
35 Resistor mesh
35 Set puzzle
35 Simple database
35 Solve a Hidato puzzle
35 Sum and product puzzle
35 Topic variable O
35 Unprimeable numbers
35 Use another language to call a function
35 Wieferich primes
35 Word break problem
34 Chebyshev coefficients
34 Day of the week of Christmas and New Year
34 Doomsday rule
34 Executable library
34 FTP
34 Faulhaber's formula
34 Four sides of square
34 Generate random numbers without repeating a value
34 Jacobsthal numbers
34 Largest prime factor
34 Long literals, with continuations
34 Mayan numerals
34 Memory layout of a data structure O
34 Monads/Maybe monad
34 Multiplicative order
34 N-smooth numbers
34 Neighbour primes
34 Numbers in base 10 that are palindromic in bases 2, 4, and 16
34 Parallel brute force
34 Pierpont primes
34 Pragmatic directives
34 Straddling checkerboard
34 Sylvester's sequence
34 Unique characters in each string
34 Verify distribution uniformity/Chi-squared test
34 Video display modes
34 Words from neighbour ones
34 Write to Windows event log
34 Zhang-Suen thinning algorithm
33 Append numbers at same position in strings
33 Bin given limits
33 Biorhythms
33 Bitcoin/address validation
33 Check input device is a terminal
33 Checkpoint synchronization
33 Common sorted list
33 Deconvolution/1D
33 Find minimum number of coins that make a given value
33 First perfect square in base n with n unique digits
33 Increasing gaps between consecutive Niven numbers
33 Largest five adjacent number
33 Last list item
33 Piprimes
33 Prime numbers which contain 123
33 Random Latin squares
33 Range consolidation
33 Set of real numbers
33 Sierpinski arrowhead curve
33 Sierpinski pentagon
33 Sorting algorithms/Cocktail sort with shifting bounds
33 Super-d numbers
32 Bioinformatics/Sequence mutation
32 Chat server O
32 Descending primes
32 Erdős-primes
32 Execute SNUSP
32 Finite state machine
32 Generate random chess position
32 Go Fish
32 HTTPS/Authenticated
32 Hunt the Wumpus
32 Keyboard macros
32 Next highest int from digits
32 Nonoblock
32 Numbers which are the cube roots of the product of their proper divisors
32 Numeric error propagation
32 Odd squarefree semiprimes
32 Odd words
32 Plasma effect
32 Ramsey's theorem
32 Rosetta Code/Fix code tags
32 State name puzzle
32 Stirling numbers of the first kind
32 Stirling numbers of the second kind
32 Sum of square and cube digits of an integer are primes
32 Window creation/X11 O
31 A* search algorithm
31 Arena storage pool
31 Check Machin-like formulas
31 Compiler/virtual machine interpreter
31 Cullen and Woodall numbers
31 Cut a rectangle
31 First class environments
31 Honeycombs
31 Idiomatically determine all the characters that can be used for symbols
31 Legendre prime counting function
31 Numeric separator syntax
31 Reverse the order of lines in a text file while preserving the contents of each line
31 Selectively replace multiple instances of a character within a string
31 Sleeping Beauty problem
31 Stream merge
31 Sum of primes in odd positions is prime
31 Summation of primes
31 Teacup rim text
31 The ISAAC cipher
31 Update a configuration file
30 Almkvist-Giullera formula for pi
30 Birthday problem
30 Cistercian numerals
30 De Bruijn sequences
30 Deceptive numbers
30 Deming's funnel
30 Fermat numbers
30 Find largest left truncatable prime in a given base
30 Fixed length records
30 Formal power series
30 Kronecker product based fractals
30 Merge and aggregate datasets
30 Monads/List monad
30 Natural sorting
30 Palindromic gapful numbers
30 Palindromic primes
30 Percolation/Mean run density
30 Prime triplets
30 Reflection/List methods O
30 Same fringe
30 Smallest multiple
30 Snake and ladder
30 Sunflower fractal
30 Superpermutation minimisation
30 Table creation
30 Tonelli-Shanks algorithm
29 Active Directory/Connect
29 Audio alarm
29 Card shuffles
29 Changeable words
29 Concatenate two primes is also prime
29 Consecutive primes with ascending or descending differences
29 Coprime triplets
29 Curzon numbers
29 Euler's constant 0.5772...
29 Find adjacent primes which differ by a square integer
29 Fraction reduction
29 Mind boggling card trick
29 Nautical bell
29 Numbers whose count of divisors is prime
29 Order by pair comparisons
29 Play recorded sounds
29 Pseudo-random numbers/PCG32
29 Safe addition
29 Sequence of primorial primes
29 Shortest common supersequence
29 Solve a Holy Knight's tour
29 Special neighbor primes
29 Thiele's interpolation formula
29 Total circles area
29 Two's complement
29 UPC
29 Ulam numbers
29 World Cup group stage
28 Abelian sandpile model/Identity
28 Base58Check encoding
28 Cipolla's algorithm
28 Continued fraction/Arithmetic/G(matrix ng, continued fraction n)
28 Distributed programming
28 Elliptic curve arithmetic
28 Exponentiation with infix operators in (or operating on) the base
28 Function frequency
28 Giuga numbers
28 Honaker primes
28 Image convolution
28 Intersecting number wheels
28 K-means++ clustering
28 Padovan sequence
28 Palindromic primes in base 16
28 Paraffins
28 Permuted multiples
28 Playfair cipher
28 Prime words
28 Quadrat special primes
28 Ramer-Douglas-Peucker line simplification
28 Smallest power of 6 whose decimal expansion contains n
28 Snake
28 Spelling of ordinal numbers
28 Sum of two adjacent numbers are primes
28 Welch's t-test
28 Yahoo! search interface
27 15 puzzle solver
27 Brilliant numbers
27 Colorful numbers
27 Commatizing numbers
27 Factorial primes
27 Getting the number of decimal places
27 Kolakoski sequence
27 Kosaraju
27 Linux CPU utilization
27 Longest substrings without repeating characters
27 Lucky and even lucky numbers
27 Magic squares of singly even order
27 Make a backup file
27 Matrix chain multiplication
27 Parse an IP Address
27 Permutations/Rank of a permutation
27 RCRPG
27 Self numbers
27 Simulate input/Keyboard
26 ASCII art diagram converter
26 Collect and sort square numbers in ascending order from three lists
26 Cubic special primes
26 Determine sentence type
26 Elementary cellular automaton/Random number generator
26 File size distribution
26 Hough transform
26 List rooted trees
26 Markov chain text generator
26 Next special primes
26 Orbital elements
26 Pseudo-random numbers/Splitmix64
26 Rare numbers
26 Record sound
26 Reverse the gender of a string
26 Soloway's recurring rainfall
26 Substring primes
26 Sum data type
25 Assertions in design by contract
25 Compiler/code generator
25 Cyclops numbers
25 EKG sequence convergence
25 Index finite lists of positive integers
25 Joystick position
25 Largest product in a grid
25 Mastermind
25 Median filter
25 Monads/Writer monad
25 Native shebang
25 Padovan n-step number sequences
25 Perceptron
25 Permutations with some identical elements
25 Primes which contain only one odd digit
25 Print debugging statement
25 Print itself
25 Pseudo-random numbers/Xorshift star
25 Reflection/Get source O
25 Riordan numbers
25 SOAP
25 Sierpinski curve
25 Sine wave
25 Solve a Hopido puzzle
25 Solve a Numbrix puzzle
25 Sort primes from list to a list
25 Variable declaration reset
25 Zeckendorf arithmetic
24 Active Directory/Search for a user
24 Addition chains
24 Bilinear interpolation
24 Compiler/syntax analyzer
24 Continued fraction/Arithmetic/G(matrix ng, continued fraction n1, continued fraction n2)
24 Create an object/Native demonstration O
24 Find duplicate files
24 Goldbach's comet
24 Idoneal numbers
24 Largest difference between adjacent primes
24 Levenshtein distance/Alignment
24 Magic constant
24 Main step of GOST 28147-89
24 Metallic ratios
24 N-body problem
24 Own digits power sum
24 Primes whose first and last number is 3
24 Sequence: nth number with exactly n divisors
24 Sokoban
24 Solve triangle solitare puzzle
24 Special factorials
24 The sieve of Sundaram
24 Untrusted environment
24 Vibrating rectangles
24 Vigenère cipher/Cryptanalysis
24 Wagstaff primes
24 Wilson primes of order n
23 Air mass
23 De Polignac numbers
23 Draw pixel 2
23 K-d tree
23 Klarner-Rado sequence
23 Knuth's power tree
23 Latin Squares in reduced form
23 Line circle intersection
23 Matrix digital rain
23 Names to numbers
23 Nested templated data
23 Nonogram solver
23 Pancake numbers
23 Percolation/Site percolation
23 Pig the dice game/Player
23 Polynomial synthetic division
23 Singly-linked list/Element removal
23 Useless instructions
23 Vogel's approximation method
23 Wordle comparison
22 Achilles numbers
22 Anadromes
22 Bitcoin/public point to address
22 Camel case and snake case
22 Data Encryption Standard
22 Double Twin Primes
22 Eertree
22 Elementary cellular automaton/Infinite length
22 Juggler sequence
22 Logistic curve fitting in epidemiology
22 Minimum primes
22 Montgomery reduction
22 Ormiston pairs
22 Peaceful chess queen armies
22 Percolation/Mean cluster density
22 Periodic table
22 Practical numbers
22 Primes - allocate descendants to their ancestors
22 Pseudo-random numbers/Combined recursive generator MRG32k3a
22 Safe and Sophie Germain primes
22 Selective file copy
22 Separate the house number from the street name
22 Simulate input/Mouse
22 Smallest numbers
22 Special pythagorean triplet
22 Sphenic numbers
22 Tarjan
22 Window management
21 Arithmetic coding/As a generalized change of radix
21 Aspect oriented programming
21 Color quantization
21 Compare sorting algorithms' performance
21 Composite numbers k with no single digit factors whose factors are all substrings of k
21 Cyclotomic polynomial
21 Imaginary base numbers
21 Jaro-Winkler distance
21 Just in time processing on a character stream
21 Largest palindrome product
21 Long stairs
21 Modified random distribution
21 Nimber arithmetic
21 Pandigital prime
21 Prime numbers p for which the sum of primes less than or equal to p is prime
21 Quoting constructs
21 Readline interface
21 Transportation problem
21 Two bullet roulette
21 Word ladder
20 Bitmap/Read an image through a pipe
20 Compiler/AST interpreter
20 Conjugate a Latin verb
20 Duffinian numbers
20 Erdős-Nicolas numbers
20 Euclid-Mullin sequence
20 HTTPS/Client-authenticated
20 Meissel–Mertens constant
20 Most frequent k chars distance
20 P-value correction
20 Prime triangle
20 Ruth-Aaron numbers
20 SQL-based authentication
20 Self-hosting compiler
20 Sierpinski square curve
20 Square root by hand
20 Terminal control/Positional read
20 Tree from nesting levels
20 Ultra useful primes
19 Bitmap/PPM conversion through a pipe
19 Blum integer
19 Calmo numbers
19 CalmoSoft primes
19 Chernick's Carmichael numbers
19 Code segment unload
19 Distribution of 0 digits in factorial series
19 Find URI in text
19 Fortunate numbers
19 Free polyominoes enumeration
19 Gradient descent
19 Inconsummate numbers in base 10
19 O'Halloran numbers
19 Proof O
19 Pseudorandom number generator image
19 Rhonda numbers
19 SHA-256 Merkle tree
19 Safe mode
19 Simulated annealing
19 VList
19 XML validation
18 Arithmetic derivative
18 Banker's algorithm
18 Binary coded decimal
18 Execute Computer/Zero
18 Hex words
18 Iccanobif primes
18 Longest palindromic substrings
18 Minimal steps down to 1
18 NYSIIS
18 Non-transitive dice
18 Particle swarm optimization
18 Penrose tiling
18 Percolation/Bond percolation
18 Polynomial derivative
18 Ramanujan's constant
18 Rendezvous O
18 Retrieve and search chat history
18 SEND + MORE = MONEY
18 Set right-adjacent bits
18 Suffix tree
18 Three word location
18 Word search
17 Bioinformatics/Subsequence
17 Bézier curves/Intersections
17 Canny edge detector
17 Earliest difference between prime gaps
17 Forbidden numbers
17 Four is the number of letters in the ...
17 Geohash
17 Geometric algebra
17 Iterators
17 OpenWebNet password
17 Overloaded operators
17 Pairs with common factors
17 Sorting algorithms/Tree sort on a linked list
17 Topological sort/Extracted top item
17 War card game
16 Bernstein basis polynomials
16 Count the coins/0-1
16 Equal prime and composite sums
16 Even numbers which cannot be expressed as the sum of two twin primes
16 Functional coverage tree
16 Interactive help
16 Jaccard index
16 Minkowski question-mark function
16 Multiplicatively perfect numbers
16 Numbers which are not the sum of distinct squares
16 Ormiston triples
16 Pentomino tiling
16 Pisano period
16 Radical of an integer
16 Railway circuit
16 Repunit primes
16 Rodrigues’ rotation formula
16 Round-robin tournament schedule
16 Run as a daemon or service
16 Solve hanging lantern problem
16 Tetris
16 Text completion
16 Tropical algebra overloading
16 Unit testing
16 Untouchable numbers
16 Verhoeff algorithm
16 XXXX redacted
15 Boyer-Moore string search
15 Curve that touches three points
15 Erdös-Selfridge categorization of primes
15 Extreme primes
15 Faces from a mesh
15 Factorial base numbers indexing permutations of a collection
15 Find Chess960 starting position identifier
15 Gotchas
15 Isograms and heterograms
15 Multi-base primes
15 One-time pad
15 Pell numbers
15 Penta-power prime seeds
15 Simple turtle graphics
15 Triangular numbers
15 Upside-down numbers
15 Wolstenholme numbers
14 Anaprimes
14 Audio frequency generator O
14 Bifid cipher
14 Binomial transform
14 Checksumcolor
14 Colour pinstripe/Printer
14 Deconvolution/2D+
14 Display an outline as a nested table
14 Distance and Bearing
14 Fibonacci matrix-exponentiation
14 Gaussian primes
14 Generalised floating point addition
14 Greed
14 Hourglass puzzle
14 Launch rocket with countdown and acceleration in stdout
14 Magic numbers
14 N-grams
14 Penholodigital squares
14 Powerful numbers
14 Quad-power prime seeds
14 Ramanujan primes
14 Steffensen's method
14 Using a speech engine to highlight words
13 16 puzzle game
13 ASCII control characters
13 Bioinformatics/Global alignment
13 Catmull–Clark subdivision surface
13 Execute CopyPasta Language
13 Graph colouring
13 Home primes
13 Knuth-Morris-Pratt string search
13 Mayan calendar
13 Pan base non-primes
13 Primes: n*2^m+1
13 Search in paragraph's text
13 Sieve of Pritchard
13 Singular value decomposition
13 Sisyphus sequence
13 Spoof game
13 Sub-unit squares
13 Time-based one-time password algorithm
13 Tree datastructures
13 Wordiff
12 ADFGVX cipher
12 Combinations with repetitions/Square digit chain
12 Countdown
12 Distinct palindromes within decimal numbers
12 External sort
12 Fermat pseudoprimes
12 French Republican calendar
12 Morpion solitaire
12 One-two primes
12 Pinstripe/Printer
12 Prime reciprocal sum
12 Range modifications
12 Resistance calculator
12 Rosetta Code/Rank languages by number of users
12 Rosetta Code/Tasks without examples
12 Solve equations with substitution method
12 Square form factorization
12 Starting a web browser
12 Suffixation of decimal numbers
12 Super-Poulet numbers
12 Terminal control/Restricted width positional input/No wrapping
12 Zsigmondy numbers
11 Addition-chain exponentiation
11 Babylonian spiral
11 Brace expansion using ranges
11 Discrete Fourier transform
11 IPC via named pipe
11 Inventory sequence
11 Jordan-Pólya numbers
11 N-queens minimum and knights and bishops
11 Numerical and alphabetical suffixes
11 OpenGL/Utah teapot
11 Parse EBNF
11 Peripheral drift illusion
11 Prime numbers whose neighboring pairs are tetraprimes
11 Smarandache-Wellin primes
11 Sort an outline at every level
11 Terminal control/Restricted width positional input/With wrapping
11 URL shortener
11 Wasteful, equidigital and frugal numbers
10 CORDIC
10 Compiler/Verifying syntax
10 Elliptic Curve Digital Signature Algorithm
10 Integer long division
10 Price list behind API
10 Raster bars
10 Resistance network calculator
10 Robots
10 Singly-linked list/Reversal
10 Smallest number k such that k+2^m is composite for all m less than k
10 Statistics/Chi-squared distribution
10 Tamagotchi emulator
10 Text to HTML
10 Transliterate English text using the Greek alphabet
10 User defined pipe and redirection operators
10 Worthwhile task shaving
9 Apéry's constant
9 B-spline
9 Black box
9 Doubly-linked list/Element removal
9 Factor-perfect numbers
9 Fibonacci heap
9 I'm a software engineer, get me out of here
9 Least m such that n! + m is prime
9 Marching squares
9 Multidimensional Newton-Raphson method
9 Numbers k such that the last letter of k is the same as the first letter of k+1
9 OpenGL pixel shader
9 Ramanujan primes/twins
9 Random sentence from book
9 Rosetta Code/Run examples
9 Sealed classes and methods
9 Segmentation fault protection
9 Smallest enclosing circle problem
9 Tupper's self-referential formula
9 Undulating numbers
8 Audio overlap loop
8 Boustrophedon transform
8 Dating agency
8 Engel expansion
8 Hexapawn
8 Horse racing
8 Inner classes
8 P-Adic numbers, basic
8 Particle fountain
8 Recursive descent parser generator
8 Remote agent/Agent logic
8 Remote agent/Simulation
8 Simulated optics experiment/Data analysis
8 Simulated optics experiment/Simulator
8 Sorensen–Dice coefficient
8 Strassen's algorithm
8 Waveform analysis/Doh ray me O O
8 WiktionaryDumps to words
7 Anagram generator
7 Autogram checker
7 Boids
7 Chess player
7 Compiler/Simple file inclusion pre processor
7 Create an executable for a program in an interpreted language
7 Cycles of a permutation
7 Dominoes
7 Eisenstein primes
7 English cardinal anagrams
7 Latin Squares in reduced form/Randomizing using Jacobson and Matthews’ Technique
7 Process SMIL directives in XML data
7 Red black tree sort
7 Remote agent/Agent interface
7 Selection bias in clinical sciences
7 Solve a Rubik's cube
7 Wave function collapse
6 Convert CSV records to TSV
6 Create your own text control codes
6 Divide a rectangle into a number of unequal triangles
6 OLE automation O O
6 P-Adic square roots
6 Rosetta Code/List authors of task descriptions
6 Use a REST API
6 Visitor pattern
5 CLI-based maze-game
5 Diophantine linear system solving
5 Erdős–Woods numbers
5 Generalised floating point multiplication
5 Multiton
5 Number triplets game
5 Solving coin problems
5 Ukkonen’s suffix tree construction
5 Unicode polynomial equation
5 Vidir
5 Waveform analysis/Top and tail O
5 Weather routing
4 15 puzzle game in 3D
4 Blackjack strategy
4 Compiler/Preprocessor
4 Cross compilation
4 IRC gateway
4 Protecting Memory Secrets
4 Sanitize user input
4 Uno (card game)
4 WebGL rotating F
3 3d turtle graphics
3 Elevator simulation
3 Szymański's algorithm
2 Rainbow
1 Centroid of a set of N-dimensional points