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Apart from taking a while to get the interview, the overall experience was pretty fine. The HR representative and interviewer were patient and friendly. It was a great experience, but for those who want to get in, you certainly have to prepare well.

The first step was the online assessment from HackerRank. It had 4 questions. Personally, the difficulty seemed medium to hard, and the time allotted was 2 hours. I don't really remember it well.

This was a standard LeetCode question. You should prepare for the top 100 questions, and you'll find one of them here. Practice and prepare, and know your LeetCode topics deeply. You'll be able to solve it.