Linked Questions

19 votes
21 answers
2k views

Length of String Using Set Theory

From Wikipedia Set-theoretic definition of natural numbers The set N of natural numbers is defined as the smallest set containing 0 and closed under the successor function S defined by S(n) = n ∪ ...
jing3142's user avatar
  • 365
6 votes
28 answers
2k views

String Shenanigans

Challenge In this challenge, you are to code in any language a program or function that will take a string and replace certain characters within it with different characters. Input The input is the ...
The_Basset_Hound's user avatar
18 votes
17 answers
1k views

PPCG Jeopardy: Robbers

How well do you know the site? Let's find out. This is a cops-and-robbers challenge. Cop's thread. As a robber, you need to: Find a non-deleted, non-closed challenge that matches a cop's ...
Nathan Merrill's user avatar
22 votes
10 answers
3k views

Can the maze be solved?

Task Print 0 if an n*m maze cannot be solved Print 1 if an n*m maze can be solved (in 1 or more ways) (so I'm not asking for ...
dwana's user avatar
  • 553
17 votes
4 answers
3k views

What's the Language?

Recently, the PPCG design leaderboard has been having some trouble parsing answer html headers. In this challenge you'll be taking your own shot at parsing answer headers. Example Test Cases These ...
Downgoat's user avatar
  • 28.9k
20 votes
1 answer
529 views

Diff compression [closed]

For this challenge, you need to compress a diff. A diff is some data that represents the difference between two strings. For this challenge, you need to provide one or more programs that can: Input ...
Nathan Merrill's user avatar

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