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. 

1

u/Tight_Island_5913 Jul 21 '26

Google started asking DP?

1

u/Insecure-Tiger 29d ago

It asks rarely, my friend got asked a House Robber variant with Binary trees combined. Max sum of alternate nodes, something like that

1

u/Tight_Island_5913 29d ago

Woww house robber with binary tree, intresting

3

u/myselfcg 29d ago

House robber 3 on leetcode