It was my very first interview but interviewer guide me so well although the HR person was casual and not informative about the details. Interview asked me two questions from trees and asked me to code and note pad (it was online). I made it done with a little flaw in second question. She finalized me for the final round. In final round 3 more interviewers took my interview . In first interview, I attempted 1.5 questions, in second 2/3, last interview was with the team lead. I don't know what went wronf but I just casually asked him that I'm more interested in practical things and not in teaching. At first, he was happy that things went right but suddenly he said to me that it's not finalized that you are final or not. I was naive and new and did not know that he was judging me but behaviorally they all were nice people. What made me feel bad was they did not contact me after that nor they did give review on any thing. I mean come on , you 4.5 hours of my life and you did not bother telling me the reason. At first, I was impressed but HR is very casual. Interview process was interesting and I enjoyed that. It was all related to Data structures.