Google Software Engineering interview questions

Applied online but did not get a response until I emailed my school's recruiter about an exploding offer. Had three back-to-back 45-minute phone interviews in the same day. These three interviews were completely technical in nature. Each interview consisted of one or two algorithmic questions. Heard back from recruiter a month later telling me I'd made it to the host matching stage. Had a phone debrief with my recruiter, then had several interviews with potential hosts. Host matching interviews were pretty laid back.

I got a mail regarding phone interview. There were 3 phone interviews. Level medium/difficult. I told solutions to all but they always wanted better solutions. All questions were about basic data structures ( Array, Linked lists, Strings etc)