Microsoft Software Engineer Internship interview questions

First interviewer was great. Very friendly, it was about half personality and half technical. Asked a simple string traversal question. Second interview not so great, the interviewer wasn't friendly and left no time for the technical part which was about a data structure so I didn't do too well

I had one test that I did at the same time as many other people. A few moths later I was invited on the on site where I did 3 interviews one after the other