"Let me know if you've seen this question before"
Why on god's green earth do companies ask this question during Leetcode interviews?
First of all, only a moron is going to give away such a valuable advantage. Noble? Honest? No doubt. But terrible at looking out for their own best-interest.
Second, I feel as if the bar for Leetcode interviews has been set so absurdly high, that the only way to have high odds of success is to do hundreds of problems and learn all the patterns! If I haven't seen the problem, or a direct variation before, then I didn't study enough.