Google

I applied through the portal and received an email saying I was selected for the next round almost two weeks after my application. This next round involved an online assessment where we were asked hard LeetCode questions.

The first round was a DSA round. I was asked 3 DSA questions, all of which were rated as hard. Unfortunately, I couldn't solve any of them and was rejected after the first round.

It's not that difficult. You just need to look sharp, be confident, and answer the questions correctly. Don't be nervous; that annoys the interviewer. Just be confident. Even if you don't know something, just say whatever you know, but confidently.