Microsoft Intern interview questions

Contacted by recruiter after resume drop at an info session. Had an on campus interview. The question was to find the biggest number in a binary search tree that is less than a given number. I wasn't able to solve the problem on my own but the interviewer walked through the solution with me and I was able to write it down in code after. He also asked some basic behavioral questions.

I was given a phone interview through an employee referral. After a couple of weeks, I was contacted about setting up an onsite interview at Microsoft headquarters in Redmond. On interview day, I had five interviews that were both technical and behavioral including one lunch interview. There were CTCI questions for the most part, and the interviewers would help you along if you were stuck. I did decent on the technical aspect but definitely did not ace the interviews. The interviewers also were very interested in discussing their work and seeing your passion for technology. Afterwards, I was sent back to the recruitment building and told to expect results within a week. 3 business days later I received an email stating that I had been given an offer and a phone call with details. Overall great experience, and the interviewers were the best I've ever had.