Google Software Engineer New Grad interview questions

Their interview process is extremely professional. During the interview process, the interviewer will ask you to program (write actual code!!) in a pre-opened GoogleDoc. After questions about your projects and why you choose Google, he would let you answer an algorithm question. I got a phone call several weeks after and got rejected.

Applied online, got a coding challenge with pretty easy leetcode style questions with 1 hour limit. Got a phone interview where we talked about past experience/projects then 1 question with a doc, simple question but then asked a variation that added some complexity to it/ optimization. Big O analysis. Invited for onsite