Google Software Engineer - Internship interview questions

First i was contacted by a recruiter who told me about the process and asked me for completing some information and forms. Then she asked me to tell her ten dates when a i could have the phone interviews. The process consisted in two technical interview first and then they asked for an additional technical interview.

first I got a link to solve 2 coding questions within 90min. nothing too complex, practice string manipulation and general data structures with emphasis on Hashmaps. Then got two phone interviews with 2 engineers. It took me a while to understand the questions asked by the engineers, they dont make it very clear to see if you ask the right questions.