It was an in-person interview. The interviewer was not aware of which round it was. He directly jumped to questions from a set of questions already prepared on his laptop. He was not listening to me at all, just giving 30 seconds and before I completed my answer, he was jumping to another question. He didn't ask what I am good with, what my past experience was... nothing. I was feeling like he came to take the interview without his interest and by force. Not sure about other interviewers. I completely wasted my day that weekend.

Implementation of linked list.