Google

The process took about 1-2 months and was also over the Christmas break, which might be why it was so long. I had 2 coding exercises for round one, then had 2, 45-minute interviews, and heard back a few weeks later.

I received an email from the recruiter within 45 minutes of submitting my application, but the entire interview process took nearly a month. The first interview was a phone interview, which wasn't too tricky. The interviewer was very kind and helped

Come in, dig over the CV, and go straight up to the board. Start solving the question in whichever programming language you want. You'll need to explain about computing speed, memory requirements, tradeoffs, etc.