S

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S-expressions

Safe primes and unsafe primes

Sailors coconuts and a monkey problem

Same fringe

Sattolo cycle

Scope

Search a list

Search a list of records

Secure temporary file

SEDOLs

Self-describing numbers

Self numbers

Semiprime

Semordnilap

Send an unknown method call

Separate the house number from the street name

Sequence nth number with exactly n divisors

Sequence of non-squares

Sequence of primes by trial division

Sequence of primorial primes

Sequence smallest number greater than previous term with exactly n divisors

Sequence smallest number with exactly n divisors

Set

Set consolidation

Seven-sided dice from five-sided dice

Sexy primes

SHA-1

SHA-256

Shell one-liner

Shoelace formula for polygonal area

Short-circuit evaluation

Shortest common supersequence

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

Sieve of Eratosthenes

Simple windowed application

Simulated annealing

Singleton

Singly-linked list

Sleep

Smallest numbers

Smallest square that begins with n

Smarandache prime-digital sequence

Smith numbers

Snake

Sockets

Solve triangle solitare puzzle

Sort a list of object identifiers

Sort an array of composite structures

Sort an integer array

Sort disjoint sublist

Sort numbers lexicographically

Sort stability

Sort three variables

Sort using a custom comparator

Sorting algorithms

Soundex

Sparkline in unicode

Special Divisors

Special factorials

Special neighbor primes

Speech synthesis

Spelling of ordinal numbers

Spiral matrix

Split a character string based on change of character

SQL-based authentication

Square-free integers

Square but not cube

Stable marriage problem

Stack

Stair-climbing puzzle

Standard deviation

Statistics

Stem-and-leaf plot

Stern-Brocot sequence

Stirling numbers of the first kind

Stirling numbers of the second kind

Strange numbers

Strange plus numbers

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

Strong and weak primes

Subleq

Subset sum problem

Substitution cipher

Substring

Substring primes

Subtractive generator

Successive prime differences

Sudoku

Suffix tree

Sum and product of an array

Sum and product puzzle

Sum digits of an integer

Sum multiples of 3 and 5

Sum of a series

Sum of divisors

Sum of first n cubes

Sum of squares

Sum of the digits of n is substring of n

Sum to 100

Summarize primes

Sunflower fractal

Super-d numbers

Superellipse

Superpermutation minimisation

Sutherland-Hodgman polygon clipping

Sylvester's sequence

Symmetric difference

System time

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