Google

There were three interview rounds, each eliminatory. I was able to pass the first round only. The questions were of difficulty LeetCode medium to hard. My questions required in-depth knowledge of hashmaps.

A word on cover letters: they aren’t required (and may or may not be considered), so it’s your call on whether to include one. If you do decide to include a cover letter, many of the same suggestions we have for building a good resume apply here as

The interview was very good. There were 3 DSA rounds, 1 aptitude round, and a technical round. The manager was quite friendly and helped me to crack it. Also, I think the key to cracking these interviews is your DSA knowledge and preparation.