Algorithms for Coding Interview Sources https://www.programcreek.com/2012/11/top-10-algorithms-for-coding-interview/ http://www.geeksforgeeks.org/ Cracking the Coding Interview - https://www.amazon.co.uk/Cracking-Coding-Interview-6th-Programming/dp/0984782850/ref=sr_1_1?ie=UTF8&qid=1506882073&sr=8-1&keywords=crack+coding+interview