I submitted my resume at my school's career fair and was interviewed on campus.

There were two rounds of interviews: one technical and one behavioral.

The technical interview primarily focused on some of the projects I've done, though not in great depth. Additionally, the interviewer asked many questions about basic computer networking knowledge and REST APIs. At the end, I completed a programming question that wasn't particularly difficult.

The behavioral part was brief, and we had a pleasant and comfortable conversation.

Overall, the interview process was excellent, and I enjoyed it.

I will proceed to the Yelp headquarters for the on-site interview, which is the final round.

There is a HashMap containing 7 keys, from Monday through Sunday. Each key corresponds to a list of (start time, end time) pairs. The pairs are unsorted.

What I need to do is merge the time slots that are adjacent. Finally, I will return another HashMap with the same structure but with merged time slots.