Interview lasted for 2 weeks. There were 3 rounds of interview. 1st round consisted of commonly asked DS algo questions. LC easy, medium. Interviewer was nice and very interactive. 2nd round was the worst, not because it was tough but because the interviewer himself had no clue what he was asking. Even after answering right he stuck with his own approach and it seemed that he himself had no idea of how to solve it. My advice to the company would be, get rid of incompetent interviewer who have no idea of how to conduct an interview.

1 online round in which most of the questions were patterns, permutation and combination, logic etc . After passing online round there were 2 interview rounds. The online rounds were general questions about internships, projects and few coding questions.