there are two rounds on my onsite interview. For the first round, I was asked to implement external sort, which is to sort plenty of number which cannot be fitted in one memory. For the second round, I was interviewed by the group manager, he asked some behavior questions, like if you have conflicts with your teammates when working on a project, how do you deal with it etc. He also asked me to describe recursion to him, and reverse a linked list both iteratively and recursively.