The entire process was excellent.

First, I had two interviews on Skype. In both of them, I had to solve a problem by writing code in a shared Google Doc.

After that screening, they decided to fly me to Mountain View, CA for the onsite interviews.

Once in Mountain View, I had five interviews: two in the morning, then lunch, and three in the afternoon. In each interview, I was asked to solve several problems on the whiteboard.

If you didn't have access to the functions malloc() and free(), describe how you would implement them.