First time I faced this problem during one of my codility tests for a work application. And I failed it. :) Just because I have never heard about such problems before. Anyway, my opinion about codility tests is the same as about writing code on a whiteboard.  A programmer should be able to think, to investigate and solve the problem in the end. You can’t train yourself for every existing problem and their endless variations. It’s true especially for whiteboard coding challenge because you have limited time and can’t use online resources. Stress not compliment process of thinking, it destroys this process. Well, it’s a topic for another post. In this post, I will provide my investigation on a Knight distance problem and a solution.
Continue reading