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