Google Software Engineer(Internship) interview questions

One coding challenge, three phone interviews. The average difficulty for the phone interviews was medium but one of the questions I received was very hard. Got into host matching but was swept by another company before I was matched. The HR was very fast and responsive!

I applied through an employee referral in the mid Sept. The recruiter contacted me in the beginning of oct. We coordinated two interviews which put me into the intern project match pool. I had a semi-interview with an engineer, resulting in my eventual offer.