Google

Two interviews back to back with an hour break. Difficulty was one hard, one medium. The interviewers were nice, but a little bit pushy, so you don't get a lot of time to think.

It was okay. The interviewer was kind but did not seem interested at all. The questions were not that hard, but the entire interview process was very strung out, and communication amongst the recruiter was not good.

Pretty easy. It was two graph type problems, with DP necessary to solve. You don't need to run the code, which is a plus. They have their own pool of questions, so they usually aren't on LeetCode.