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Challenge Given a list of unique colour names as input, sort them in the order that they first appear in Joseph's Amazing Technicolour Dreamcoat. Example Input: green, blue, red, brown Outpu...
Currently, the posting guidelines for Code Golf are the defaults on Codidact. The pre existing guidelines on SE are the following: The main points of discussion are: What would we like to ...
APL (Dyalog Unicode), 11 3 1 byte ⊥ Try it online! Anyone who can golf this further gets a cookie! Function submission which takes reversed coefficients as right argument and $x$ as left ar...
Rules Using your language of choice, golf a quine. A quine is a non-empty computer program which takes no input and produces a copy of its own source code as its only output. No cheating -- ...
Heavily based on this closed challenge from SE. Description A Sumac sequence starts with two non-zero integers $t_1$ and $t_2.$ The next term, $t_3 = t_1 - t_2$ More generally, $t_n = t_{n-2} ...
The task Output the first 100 elements of the infamous FizzBuzz sequence. How? The FizzBuzz sequence is the sequence of decimal integers from 1 to 100 inclusive, but: If the integer is divisi...
I feel it'd be a good idea to require, or at least heavily encourage, that challenges include an example, ungolfed, readable solution in a non-golf language like Javascript, C, Rust, or Python. Th...
What sort of loopholes are assumed to be disallowed in any challenge on this site? One loophole per answer, please. Vote up answers if you want them disallowed, and down otherwise.
What input/output methods do you think should be allowed/disallowed while code golfing on this site? What guidelines for input/output methods do you think should be in place? One method per answer...
You may output delimiter-separated values instead of a list For example, the output [1,2,3] could be represented as 1 2 3 or 1|2|3.
Functions may use arguments or lists of arguments interchangeably For example, if a challenge requires defining f(x, y, z), f(a) is also acceptable where a[0] = x, a[1] = y, a[2] = z.
I say we follow the established rules on SE: Rather than dealing with inconsistent schemes for adding flags, let's just consider each separate invocation of a compiler/interpreter/whatever a sep...
The task is to take a decimal integer as input and print the corresponding Roman numeral with capital letters. The program must handle all positive integer numbers between 1 and 1000. Input can be...
Currently, the leaderboard is useless on alternative-scoring challenges. In order to make the leaderboard more flexible, I propose the creation of two new tags: "lowest-score" and "highest-score"....
Vyxal, 2 bytes KH This pushes the string "Hello, World!" to the stack and automatically prints it. Also, this is the first answer on the site! Woo!
Should sandbox posts give rep? On one hand, keeping this feature motivates more people to use the sandbox. On the other hand, allowing people to gain rep twice for the same content seems wrong in s...
Shakespeare Programming Language, 974 bytes Only 973 bytes away from winning. a.Ajax,.Puck,.Act I:.Scene I:.[Enter Puck and Ajax]Puck:You is the cube ofa big big cat.Ajax:You is the sum ofI a big...
C, 5 bytes main; This exploits the fact that uninitialised globals live in the .bss section, and that section is not executable. So any attempt to execute code there, regardless of content, wil...
Please welcome your new moderators: Quintec, Chris Jester-Young, and Jo King. All three have community support and I said "at least two", so we're happy to appoint all three as temporary moderator...
Goldbach's Conjecture states that every even whole number greater than 2 is the sum of 2 prime numbers. Your task is to return those 2 prime numbers, given an even whole number as input. There are ...
Description From the Esolangs wiki, In Fractran, a program consists of a finite list of positive, rational numbers. The input to a program is a positive integer n. The list is then searched ...
Challenge A simple challenge: Given a two-dimensional matrix (an array of arrays) of real numbers, compute the determinant. The determinant of a matrix is a mathematical construct used in many ap...
Given a string of Roman numerals, decide whether it forms a valid Roman number. If not, output the substring that proves this, from the list of 50 strings described below. Relevant fact This chal...
Challenge Make a program that takes input of 3 non-negative integers: a result and 2 other values that once calculated results to the 3rd value. The program must figure out how to get the 2 fir...
Make a new post If they are completely different solutions, I would say they should be judged separately.
