Hi everyone,
I recently finished my Google L5 coding interview loop and wanted to share my experience to get your thoughts on how it might turn out.

Round 1 (Tree Problem – Feedback: Negative)
Got a tree problem with a follow-up.

I was able to explain the basic idea but struggled a bit with optimization.

Interviewer gave negative feedback — mentioned I could’ve handled the follow-up better.

Round 2 (Math + String – Feedback: self-rated, Expecting LH/H)
The problem was a combination of math and string logic.

I found almost similar problem here on discus

https://leetcode.com/discuss/post/453156/google-onsite-encode-number-by-no1r-qp80/

Took some time to figure out the correct approach, but eventually implemented a fully working solution.

No follow-up, but I felt I communicated well throughout.

Round 3 (Matrix Construction – Feedback: Self-rated H/SH)
Question was about building a matrix under certain constraints.

https://leetcode.com/problems/build-a-matrix-with-conditions/description/

Solved the main problem and the follow-up within time.

Interviewer seemed happy, and I felt confident about this round.