Google Software Engineer Internship interview questions

The first round was a coding round which was pretty much like any other coding round. Easy to medium difficulty level questions. Next round was two technical phone interviews. Interviewers are friendly and there is nothing to worry about. Just hope that you don't a Chinese guy with a strong accent. It's difficult to communicate effectively. Questions posted below.

Got the online assessment and survey. After finishing them, they told me they will not continue my process. Do not very understand the reason why they did not even give me the interview.