2 phone interview coding problem Round 1: Chinese ProfessorAt the start, he mentioned that the actual implementation wasn't the priority; the focus was on the problem-solving approach. The task was to guess a hidden number. While it clearly called for a Binary Search, there was a twist: the system doesn't give you feedback on your current guess immediately. Instead, it only provides the result of your previous guess. Essentially, it was a Delayed Binary Search.Round 2: Caucasian MaleThis was a very straightforward BFS (Breadth-First Search) problem.I’m honestly not sure why I didn't pass. It’s possible I just wasn't a "team match," or perhaps there was a subtle optimization they were looking for.Analysis & ThoughtsThat first round is a classic "think-on-your-feet" brainteaser. In a Delayed Binary Search, you usually have to "waste" a move or manage two search intervals simultaneously because your $n$-th guess is informed by the $(n-1)$-th result. It tests how you handle state and asynchronous feedback.

big fat red flags through out the interview process, look up in google for "red flags during interviews" and they have shown every single one of them. Ghosted after 5 rounds of interview, no offer, no rejections, straight up ghosting even after I emailed for follow up.