Lonely Integer - XOR Integer Pairs From Hacker Rank, Lonely Integer Challange
Taking an array of integers, where it a guarenteed that the size is odd, and all enteries bar one is a pair, return the integer that only appears once.
I knew there must be a trick to this however I didn’t figure it out. I implemented a basic solution using a map to count instances which was obviously O(N) in time.
Yesterday I turned 28. For the last 13 years at least I have been very interested in computers and programming in general. I now could not imagine what I would be doing now if it were not for these devices that live in almost every aspect of my life.
Still I haven’t really done much with that, as far as I am concerned. I have made no great websites, services, products, or games.
