4
votes
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
...
Wheat WizardMod
- 96.5k
4
votes
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
3
votes
3
votes
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
3
votes
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
3
votes
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
3
votes
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
2
votes
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
2
votes
2
votes
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
2
votes
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
2
votes
2
votes
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
2
votes
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
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
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
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