# Tag Info

### Sandbox for Proposed Challenges

Classify a Coxeter group In this challenge you will take as input a Coxeter matrix representing a Coxeter group. Your program will then classify it as one of the following: Spherical Euclidean ...
• 96.5k

### Sandbox for Proposed Challenges

English Golf Your challenge is to golf some English text by replacing some words with their contractions. Here is a list of the contractions you need to support: Words Contraction are not aren't ...
• 166k

### Sandbox for Proposed Challenges

Just another traffic jam!
• 1,826

### Sandbox for Proposed Challenges

Cyclically Sort a List Given a list of Integers greater than zero, Sort each of the unique values in ascending order, then repeat the process on the remaining duplicate values and append. Example: <...
• 2,090

### Sandbox for Proposed Challenges

Construct the Constructability sequence Consider compass-and-straightedge construction, where you can construct new points from existing ones by examining intersections of straight lines and circles ...
• 49.4k

### Sandbox for Proposed Challenges

Derive an MIU string The MU puzzle in Douglas Hofstadter's Gödel, Escher, Bach involves a simple formal system called "MIU". It works as follows: MI is ...
• 166k

### Sandbox for Proposed Challenges

Golf Transmission As in, the 5 speed transmission from the original VW Golf GTI. Print the transmission pattern in as few bytes as possible. ...
• 2,090

### Sandbox for Proposed Challenges

Sub-quadratic base conversion Write a program that converts a positive integer given in base 10 to its base 2 representation. Your algorithm must run in a complexity lower that $O(n^2)$ Rules You ...
• 5,817

### Sandbox for Proposed Challenges

Write a Web server quine
• 1,140

### Sandbox for Proposed Challenges

Implement the "Wolontis" Function While looking at old ALGOL documentation with someone else on Discord, this "famous" function popped up: Although it’s mentioned in other ...
• 2,745

### Sandbox for Proposed Challenges

Compute the Kimberling Sequence code-golf Introduction The Kimberling Seqeunce is a sequence of sequences. Each sequence is defined in terms of the previous sequence and the previous stage number. At ...
• 211

### Sandbox for Proposed Challenges

Can the chefs go? (formerly "Decode Triple G Start")
• 1,140

### Sandbox for Proposed Challenges

Implement a simple stack language code-golf In this task, you implement an interpreter for a simple stack-based programming language. Your language must provide the following instructions: push an ...
• 581

### Sandbox for Proposed Challenges

Parse nested absolute values Part1 Part2
• 5,817
1 vote

### Sandbox for Proposed Challenges

Auto-golf an esolang The lack of a social life drove a poor nerd into inventing another superfluous esolang called !+~%. For no good reason it initializes the ...
• 1,826
1 vote

### Sandbox for Proposed Challenges

Challenge Create a sorting algorithm in as few bytes as possible. It can be, at worst, $O(n^2)$. This can be insertion sort, mergesort, quicksort, or any other sorting algorithm with $O(n^2)$ ...
• 59
1 vote

### Sandbox for Proposed Challenges

Encode PSK31 Given a string of ASCII text as output, encode it in BPSK31 using Varicode. You may either output an audio file in any common format, or play the audio over the device speakers.
• 1,140
1 vote

### Sandbox for Proposed Challenges

Golf an HQ9+ transpiler
• 1,140
1 vote

### Sandbox for Proposed Challenges

Format Datetime in 30-Hour Clock Time code-golf date string Input a datetime, format the datetime in YYYY-MM-DD HH:mm:ss where HH...
• 34k
1 vote

### Sandbox for Proposed Challenges

Deja vu Given two arrays, let's call them a and b, and a number n, your task is to see if there exists a subarray in a so that that subarray's sum is n and there is a subarray in b that also sums to n ...
• 3,443
1 vote

### Sandbox for Proposed Challenges

code-golf number natural-language Read a French number We have Spell out numbers in French, Translate numbers to French and Telling time in French, but we were missing the reverse: Challenge Read a ...
• 699
1 vote

### Sandbox for Proposed Challenges

Prefix-Suffix equality, part 1 Given an array of two distinct byte-sized values, please perform the following operations or their equivalent: Construct an array of its nontrival prefixes and suffixes,...
• 166k
1 vote

### Sandbox for Proposed Challenges

Write the date in abbreviated Latin
• 699
1 vote

### Sandbox for Proposed Challenges

Generate the snowflake pattern sequence A snowflake figure looks like this: A few rules govern how many points each ring can have. The innermost ring must have between 1 and 8 inclusive points. ...
• 11.8k
1 vote

### Sandbox for Proposed Challenges

posted: Convert real numbers between factoradic and positive integer bases
• 169
1 vote

### Sandbox for Proposed Challenges

Can I do this parkour? code-golf In this challenge, you'll be given a list of platforms (line segments), a start point, a goal point, and your acceleration, stopping, and jump strength. Your task ...
• 18.6k
1 vote