Microsoft Software Engineer interview questions

First, I had to solve 2 problems in an online assignment. The difficulty was somewhere between average and hard. The problems were about strings, you had tests to check the solution.

They interviewd by phone, and then called me to their offices. There was one interviewer who greated me at the front desk, and took me upstairs for the interview. He told me abour the positon, asked me to tell about myself, and moved on to the technical part.