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They asked me to implement an LRU cache, but I couldn’t. He was nice about it and helped me try to overcome my problems. He guided me to smaller problems to solve, such as what hashing means and how to hash.

A recruiter reached out and sent me a coding challenge. They asked a graph and a math problem. Both were pretty challenging for the coding challenge. The questions were absurd, way harder than Google and Amazon OAs.

I passed the final round but was rejected one month after. HR seems to ghost interviewees. During two rounds, the interviewer didn't show up at all. It was a bad experience, and HR refused to give feedback.