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Reverse linked list. There was one question on heap. It could also be solved using a sliding window. LeetCode's "meta top questions" are really helpful to crack the interview.

Phone interview, I was very confused as to what the interviewer was saying. I was called sharply on time, and was introduced by the guy who leads the mobile apps. His question to me was very confusing, and I did not know exactly what he was asking me

Here's my opinion from my experience interviewing at Facebook. They tell you the process in advance. One phone interview, 5 in-house interviews (3 coding, 1 design, and 1 behavioral). All interviews are 45 minutes each and one-on-one. You have to wr