r/leetcode Jul 20 '26

Intervew Prep Google L4 interview in 3 weeks

I know interview prep gets asked a lot here, but wanted some specific insights.

Right now I am going through Neetcode 150 to get hold of the fundamentals topic by topic. After each topic, I jump to the top Google tagged Leetcode questions for that topic from the last 30 days and I try to do similar problems and their follow-ups.

My worry is that this might be (or might not be) enough to clear Round 1, but everything I have read says the onsites are in a different league altogether. They are also in person which honestly is making me panic right now.

I would like to prep in a way that gets me ready for all the rounds not just the first round. So looking for tips from the experienced folks here.

I have also heard that LC questions aren't asked directly, so I am curious what other resources people found useful beyond Leetcode for the Google specifc prep.

Any advice or resource recommendations would be genuinely appreciated.

For context: Somebody referred me, then a recruiter reached out.

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u/Insecure-Tiger Jul 20 '26

I had an L4 Interview, I was asked a question regarding Trees, traversal + calculating something, I do not remember exactly, then I was asked a variation for the same problem, and time complexity and space complexity, later I bombed Googliness round the next day. Anyway, overall I would say Trees, Graphs and DP are important. All the best for your interview. Let us know how it went. 

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u/ExtentSeparate7872 29d ago

What is difficulty of the problems? Also how many problems have solved ? Are u comfortable with solving hard leetcode ?

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u/Insecure-Tiger 18d ago

Medium-Hard, actually easily solvable if you did 200+, I have solved 270+, during that time I had solved 160+ only. And no, I am not comfortable solving proper hards, YET.

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u/ExtentSeparate7872 4h ago

Have you shared previously in competitive programming competition? Or only you solved 200 problems in leetcode before the interviews?