I was given a coding challenge with hackerrank.com , it was all about Algorithm and Data Structures , I had a week to complete the coding challenge, I had specifically believe that the questions were going to be on JavaScript and Programming in general. In my experience more and more companies are shifting towards algorithm and data structures. They longer care about your skills as a developer . For me, it was a wonderful experience , having the chance means am closer. Its time to skip everything and study algorithm