Your experience matches my anecdote. Hence you can imagine my total confusion once I got the interview myself (Google, 2 times, phone to onsite, Amazon one time

Your experience matches my anecdote. Hence you can imagine my total confusion once I got the interview myself (Google, 2 times, phone to onsite, Amazon one time to onsite, Facebook, one phone). In my latest FB phone for example. I was asked a Medium question that I've never seen before, and nevertheless I solved it. How do I know? Because apparently that was taken straight from Leetcode, and the interviewer didn't even bother to change the question. I copy pasted my solution to Leetcode, run it, pass 100% test cases. I got rejected.... I asked for feedback from the recruiter. Apparently I needed to do 2 Medium questions in the allocated time. I solve the first Medium question in about 30 mins, and there was only 10 mins left for the 2nd one so the interviewer didn't bother to ask me the 2nd one. The scenario that I just told you above is not unique. Venture enough to cscareerquestions and Leetcode forum you'll be surprised to see many many worse experience than this.