The whole process was pretty swift. There was a first interview in college, after which they offered me an on-site interview. They were pretty flexible with scheduling the interview and also took care of travel and hotel expenses.

The actual interview lasted one day. First, I went to the recruiting center where I met my recruiter and talked to him for a while. Then, I took the shuttle and was off to my first interview.

The interviewer asked various questions; some were related to APIs, some were related to my earlier experience, and some were general problem-solving questions. I had four different interviews that day, and that pretty much was it.

After that, I came back to the recruiter's office and talked with my recruiter again. The next day, they told me their decision.

Find the character with the longest repetition in the string. For example, in 'aaacccddddeefffffffg', the result should be 'f'.