All files are solutions to codility problems of the same name as file names, with below exceptions
- toptal*.rb - solutions to toptal tech challenge problems
- first one is a prefix sum problem
- second is a binary sequence problem
- third one is an incorrect solution to a chess problem with knight movements
- problem1.rb - solution to another toptal problem; given a word as input, find all anagrams of it in the file wl.txt (also present in the repository)