It was a very straightforward session. A LeetCode medium-level question. I found the algorithm very quickly because it was not a new problem for me. I implemented it with some mistakes but found and fixed all of them myself after a few test cases. Afterward, he asked a few design questions, like how to protect valid inputs and such. I answered all of them. It was quite positive, and I believed I was going to the next step. What happened? In just two days, I was rejected! Why? I am very sad now.

A bit about my recent task at my current company:

A mid-level LeetCode problem.