Yet another Colatz challenge Background We all know and love the colatz sequence. It goes like this: If a number is divisible by 2, divide by 2 Otherwise, multiply by 3 and add 1. The Colatz conjecture theorizes that if you repeat this process for any number, you'll eventually reach 1. Binary I...

Base64 fixed point Given positive integer n, output a string, which after base64 encoding, results in the outputted string. You can assume it possible.

Detect if a variable is declared Create an expression which detects if a variable (named whatever you wish) has been declared yet. For languages that set undeclared variables to a type that can not be differentiated from a declared variable set to that type (e.g. nil in Lua), just detecting that ...

Inspired by a challenge from the OUCC 2022 Seniors competition. Background Two teams are playing "capture the flag". They take turns invading each other's base and capturing their opposing team's flag in the shortest amount of time. The attacking players each have one soft ball they can throw at ...