Overall, the questions in the interview were relatively easy, but I had a disappointing experience with the interviewer.

The technical interviewer arrived 15 minutes late, which disrupted the flow of the session, and it felt like she was unprepared to conduct the interview.

This made the experience less professional and more challenging to engage with effectively.

You are given a 2D integer array, board, of size m x n, where each row contains exactly 3 distinct numbers. For each row, find the second most frequent number and return an array containing these numbers for all rows.