Grubhub Software Engineer New Grad interview questions

I had an on-campus interview, then I progressed to the on-site interview which consisted of two more interviews. They were pretty nice during the process and hosted a bowling night with food before the on-site. During the on-site, my first interviewer did not show up, so I was placed with someone else. The process was easy. Ultimately I did not accept the offer because I had an offer from a top tech company. The on-site interview was more about classes and inheritance.

I applied in my university's career in September, and got a chance to do on campus interview the next day. First is a simple programming problem, write on a piece of paper. Next is some behavior question.