I was referred by a contact at Google and went directly to an onsite interview.

First, there was a tour around the building, followed by the coding interviews.

Each interview took 45 minutes, and there was no break between them.

I had three coding interviews in the morning. This was followed by lunch with an employee who was not one of my interviewers, and finally, the last coding interview.

Three of my interviewers went directly towards coding questions. There were two in my interviews with them. The other interviewer asked questions about my resume, so we only had time for one coding question.

Implement the stack structure and its functions: push, pop, empty.