Simplify Rubik's Cube Moves Background On a Rubik's cube there are 54 moves that you can execute, for example, turn the right face anti-clockwise, or rotate the top face and the horizontal slice twice. To notate any move, each face (or slice) has a letter assigned to it. To move that face clockwi...

My phone number (which I will not be sharing here) has a neat property where there is a two digit number, which when iteratively removed from my phone number will eventually remove all the digits. For example if my phone number were abaababbab Then by repeatedly removing ab we would eventually ...

In this challenge, you will be "reversing" the alphabet or swapping a-z with z-a. This is commonly known as the Atbash cypher. Because this transformation makes the output look like some foreign language, your code will need to be as short as possible. Examples abcdefghijklmnopqrstuvwxyz zyx...

Implement level-index addition code-golfrestricted-time Level-index is an alternative number representation to floating-point which claims to virtually eliminate overflow (and underflow, in its symmetric form). It expresses numbers as power towers: specifically, for any nonnegative number \$x\$, ...