If you want to quickly test an algorithm, for instance during a phone interview, this project is a great place to start. I decided to create this clean repo after spending 15 minutes (on a 20 minutes exercice) to setup my environment for a simple algorithm question.

git clone https://github.com/ssaunier/lab.git && cd lab && bundle
subl . # Or your favorite text editor
bundle exec guard

You can start writing tests in spec/thing_spec.rb, and then make them green by implementing them in thing.rb!