A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.
Problems and puzzles released as part of the First Periodic Premier Programming Puzzle Push, an event encouraging high-quality puzzles and tasks. Do not use this tag for new questions.
For challenges involving either three-dimensional graphics, three-dimensional geometry or spatial data structures in three dimensions (e.g. octrees).
the study of algebraic structures, including groups, rings, fields, vector spaces, and the like.
For challenges involving the usage and manipulation of the alphabet.
a challenge where previous answers to the challenge influence how new answers are produced.
related to the APL language. Note that challenges that require the answers to be in a specific language are generally discouraged.
For challenges relating to approximating constants/other numbers.
A competition to solve a particular problem through the usage and manipulation of arrays.
This challenge involves creating or parsing pictures using text characters as the paint. Typically this uses only 95 printable (from a total of 128) characters defined by the ASCII Standard from 1963.
related to Assembly language. Note that challenges that require the answers to be in a specific language are generally discouraged.
a competition to solve a problem with the fewest AST tokens as possible.
For challenges about objects and processes or physics and chemistry of such kind that originate outside the atmosphere of Earth.
scored by the number of operations in a specific fragment of a language you define.
Challenges relating to producing an audible output or an audio file which could then be played. If a challenge relates to textual representation of sound, it may fit better in [tag:music].
related to average or arithmetic mean.
In a balanced string certain pairs of characters or substrings always appear with the same amount. Often there are additional restrictions that those pairs also have to be ordered. The most common exa…
Conversion of numbers between positional numeral systems. Most common systems are decimal, binary, hexadecimal etc.
related to the Bash (Bourne Again SHell) language. Note that challenges that require the answers to be in a specific language are generally discouraged.
Questions of or relating to any of the dialects of BASIC. Note that challenges that require the answers to be in a specific language are generally discouraged.
related to the Befunge language. Note that challenges that require the answers to be in a specific language are generally discouraged.
the base 2 number system. Use this tag for challenges involving base 2.
For challenges involving binary matrices. Binary matrices are matrices which only contain boolean (0 or 1) values. Operations on binary matrices are done with boolean algebra.
A high-level data structure, made of nodes, each with a maximum of 2 children (left and right). Nodes with no children are called leaves, and two nodes with the same parent are known as siblings.
For questions involving computational methods to parse or edit biological data, such as DNA sequences.
A tiny game about writing assembly code to pass the graphics tests. Use this tag for questions that involve writing code in BOX-256 machine language.