I applied online and selected a date for my first contact with the recruiter. The recruiter contacted me as scheduled, explained the interview process, and set up a phone interview (online coding).

Unfortunately, I couldn't clear that round and received email confirmation of this outcome approximately 7 to 10 days later.

Despite my years of experience in hands-on coding and developing production-ready enterprise applications, the only question I was asked was about an algorithm that had no relevance to my daily work. It seems this is the unfortunate state of the interview process at some Bay Area companies, where answering an irrelevant, college-level algorithmic question is prioritized over evaluating years of practical experience.

Find if a tree is a valid BST.