All Questions
9
votes
11answers
544 views
Generate a cipher
Generate a cipher given a number and string
Your task is simple. Given a string s and a number 0 <= n <= 9 as inputs, insert a pseudo-random printable ASCII character between each character of ...
7
votes
1answer
361 views
I want to watch you die of thirst
You are a traveller crossing the desert between two towns. You cannot carry enough water to get across without stopping. This is a variation of a classic puzzle.
The Rules
A desert looks like this: ...
7
votes
1answer
194 views
Prove 2+2=2*2 (and similar)
Output a full formal poof of such statements such as 1+2=3, 2+2=2*(1+1) etc.
Introuction
If you know Peano Arithmetic you can probably skip this section.
Here's how we define the Natural Numbers:
(...
10
votes
2answers
400 views
Match the permutations!
Your challenge is to create a regex that matches every string permutation of itself, and nothing else. The match must also be case-sensitive.
So, for example, if your regex is:
ABC
It should match (...
8
votes
0answers
85 views
Fewest disk writes to defrag multiple files
Introduction
A disk is a linear container with blocks indexed 0 through size-1.
A file is a named list of block indexes used by that file.
An example filesystem is expressed like this:
15 ALPHA=3,...
27
votes
17answers
2k views
Cracking in progress
Remember those brute-force programs to crack password that show every combination they are trying? More precisely, at one point, the n first characters are fixed (they have been guessed successfully), ...
2
votes
4answers
258 views
8 ought to become Infinity [on hold]
Let's take a look on a typical loop, which usually performs 8 iterations:
for (int x=0; x<8; ++x);
You have to make it infinite!
It's a popularity-contest for all languages that support such ...
12
votes
8answers
619 views
Determine if a relation is transitive
Challenge description
Let's start with some definitions:
a relation is a set of ordered pairs of elements (in this challenge, we'll be using integers)
For instance, [(1, 2), (5, 1), (-9, 12), (0, 0)...
7
votes
1answer
234 views
Handling errors
What's great about golfing is not having to deal with errors. Except this time you won't get off so lightly! I need to do some arithmetic with certain limitations, and I wan't to know what goes wrong ...
8
votes
3answers
222 views
Convert CSV to Table
The Challenge
Given a CSV input, output a proper unicode table using box characters.
Formatting
The table will be formatted using the following rules:
Column width will be equal to the longest ...
9
votes
14answers
2k views
Generate /* line number comments */
Your task is to write a program (or function) that will take a string as input and append text to the beginning of every line that satisfy the following rules:
The text appended must contain the line ...
5
votes
0answers
159 views
The Most Durable Pokemon Types
Background
In Pokemon there are 18 types:
Normal Fighting Flying Poison Ground Rock
Bug Ghost Steel Fire Water Grass
Electric Psychic Ice Dragon Dark Fairy
...
0
votes
0answers
101 views
The Almost-Eternity Code [on hold]
Write a program that outputs as many characters as possible, with two conditions:
The program must be 256 bytes or shorter
The program must almost surely eventually halt. In other words, the only ...
17
votes
6answers
638 views
Distance Between Two Points Travelling on a Polar Graph Chart
Brief Problem Explanation
Write a program to find the minimum distance between two points travelling only on rays emanating from the origin, and circles centered on the origin
Explanation of Premise
...
14
votes
11answers
614 views
Draw a Dragon Curve
You task for today: draw a dragon curve!
In case you don't know what a Dragon Curve is, here is an introductory ViHart video (Really cool, please watch!)
Your task: draw a dragon curve, iterated at ...
