Google STEP Intern interview questions

So, I had around 3 rounds of interviews, first was the Telephonic call, had a google meet with the recruiter who reached out to me and he just made sure I have no backlogs and I have done what I mentioned on my resume. It was around 15 minutes. Second was technical round 1, where I was asked to code a sliding window problem, and the few follow up questions for that problem and then since we were running out of time I was asked to tell me approach for another problem which I described using hash, Third round included a trees question along with followup questions which. Both technical rounds lasted 45 mins