Google Software Engineering interview questions

Contacted recruiter at college career fair in September. Communicated via email to set up 2 back to back phone screens, each 45 minutes long. After the interviews, I was informed that my application was pending approval from the hiring team, and then I waited about 4 weeks to hear back a final answer and get an official offer letter. The entire process was smooth, albeit a bit slow.

Applied online, then had two phone interviews over a Google Doc. They were the typical interview format: they started out talking about what they do at Google for a few minutes, asked me a few questions, then gave me the question. I was later scheduled for a third phone interview, though I think they can make hiring decisions after just two (I did really well on one and just mediocre on the other, so I wasn't surprised that they wanted to see me do another interview). The third interview's question was harder than the questions I had gotten in my first two. Overall, it was a pretty painless process, and Google's scheduling is very streamlined.