Completing some algorithm challenges and writing tests for them.
These questions are from https://github.com/StephenGrider/AlgoCasts. The first solution for every question is my own. The additional solutions (if any) are either my own or are based off of examples shown on https://www.udemy.com/course/coding-interview-bootcamp-algorithms-and-data-structure/learn/lecture/8546964?start=0#questions that I have added for future reference.