Meta Software Engineer interview questions

I contacted with FB on a campus recruiting event and then was initially given an on campus interview. After that, I was asked to have an onsite interview with them in one of the three locations: New York city, Seattle or Menlo Park. I chose to visit the Seattle office. The process for onsite interview is inviting and I had a good time on that day. It was a university day, on which that FB invites all the university students to interview with them on the same day. The interview was one day long, starting with breakfast and then followed by three rounds of technical interview. Then entire afternoon was just visiting the office.

This was an interview where Facebook came to our University to hire students. First we talked a little about what I do, the interviewer does. He asked me about my Interests in Facebook, about why I'd want to work there. After that came the coding - he explained it not so strait forward..