Microsoft Software Development Engineer/Internship interview questions

There was an online test on "mettl" platform and consisted of 3 questions. They were just concept based. Then there were 2 technical rounds and 1 HR round. In the first round, the interviewer asked me a question based on depth first search and told me to implement it. He asked me what were the edge cases and how your code is able to handle them. In the second round, I was asked a question based on map and he kept asking me for different approaches and optimizing the code. Third round was casual, he asked me few questions about my project. Note: All of them asked me to introduce myself and describe the projects that I had done.

2 on-campus, 1 on-site interview