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by Mc91
778 days ago
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Right. I learned what binary trees were in college and didn't directly use them much afterward. Since interviews sometimes ask about trees, I started my practice of solving tree problems by practicing how to invert a binary tree. I practiced it so much that I can invert a binary tree from memory now, so that I won't get bounced from an interview like the inventor of Homebrew was from a Google interview. Most of the concepts I learned, although I don't remember learning Kadane's algorithm for solving the maximum subarray problem in school, so I've learned some things like that. I can also implement a solution for an associated Leetcode problem in one line of code, so I wound up memorizing that too. OP says "If you master the methods and ideas, you should be able to derive the answers on the spot", but I hear from a lot of people that does not happen, even (implicitly) in this thread. Any how, even if I use OPs method, if I do the same problem over and over and over again I'm going to wind up memorizing it any how. |
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Some people are closer to each other, and upon realizing that they believe they've found a pattern. But it's like when people tell you that you need to supplement x in your diet. It's possible that x helped you. And it's even possible that you'll find other people with the same nutritional deficit, creating the illusion that everyone would benefit from supplementing. But that's just what it is: a premature extrapolation from anecdotes