Google Software Engineer Internship interview questions

Two rounds back to back. Each round is 45 minutes. First round I was asked two questions. First one is adding two strings. Second one is a class design question.

Google has the best recruiters I have experienced so far. Just to put in perspective, This is my third interview process with google, each time I am made it one step forward. My interviewer however could be better. I will talking about my recent interview process. applied online at google. Recruiter reached back to me in 2 days and asked my availability for phone chat and screening. My recruiter briefed me with the process and send me reference materials and tips how to succeed in interview. Technical interview: 2 back to back interview each 45 min long my first interviewer was so difficult to understand and had feedback on audio to make mater worse. I asked if it can be fixed but comment not taken:(