Microsoft Software Development Engineer interview questions

I had worked as SDE intern for 6 months. To get the internship, I had a written technical round and 2 rounds of interviews. After the end of internship, I got what are known as Pre-Placement Interviews. There were a couple of them, 1st with a Lead and 2nd with a Director. In the 1st interview, I was asked a Data Structures problem, 2 small coding tasks and an interesting puzzle. In the 2nd interview, I was asked a coding problem based on Linked List (which I had done somewhere before) and a lot of HR/fit questions.

First spoke with a recruiter on my campus. Then had a first round interview on my campus which went well. Finally had an on-site interview in Raleigh, NC after which they immediately told me the results - I wasn't being hired. Overall the interviewing process was pretty good, Microsoft treated the candidates very well.