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.
Table Driven Tests Asserting with Testify Testing Suites Testing Env Vars Update Testing flag Table Driven Tests Table-driven tests format your tests to ensure that you are as DRY as possible while making it easy to add more test cases. There are plenty of resources about this, which I will link below; however, here is my appreciation.
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