Referred by an old colleague.

HR round: normal talk.

Then, a 1-hour phone screening. The interviewer was very young and had rare knowledge in interviewing candidates. They gave me two questions related to anagrams. I solved both, with all test cases passing successfully within 45 minutes. I explained the time and space complexity for both problems.

But I got rejected. I asked for some evaluation from them, as I am surprised by the feedback. The interviewer seemed happy with my answers. We had time to discuss the company and this position at the end of the interview.

Anagrams