The phone screen consisted of 30 minutes of talk about past projects, followed by 30 minutes of coding interviews. It was a pretty uncomfortable experience overall. During the technical portion, the interviewer insisted the entire time that a solution to a simple problem, which turned out to be correct, was incorrect. It was a popular interview question with a couple of ways to solve it optimally, and it seemed like the interviewer assumed it was wrong because it wasn’t the solution they had in mind, without actually reading the code.

Maximum difference between array elements.

Find the maximum difference between any two elements in an array.