Google Intern interview questions

Application through careers page of Google -> Online Coding Round (contained two coding questions of medium level)-> White Board Interviews (2 interviews of 45 mins each with a break of 15 mins between them)

There were two interviews back to back. Each interview went for 45 minutes. Both rounds are based on Data structures only. Questions are related to linked list. They first asked me to tell the approach and then I have to code it.