The first round was on campus. The interviewer was kind, and the problem was a straightforward recursion programming problem. I was then invited for an on-site interview the next day. The on-site interview had four rounds.

Problems in the first two rounds were not very difficult. In the third round, I interviewed with a project manager but did not perform well. He asked me about the most difficult problem I solved while preparing for this interview and requested an explanation of the entire process. I messed up because I forgot how to solve the problem I mentioned. The fourth round involved a relatively easy binary tree problem, but my mind wasn't functioning well until the interviewer provided some tips.

Overall, I think the interview process was quite long and intense, even though the coding problems were not difficult. The project manager was the hardest part to deal with.

Given some rules of a stock market, I want you to figure out the best way to trade.

A problem related to bit-wise manipulation.

What was the most difficult problem you solved while preparing for this interview?

Print the outline of a binary tree.