This is the Python material that does not get left behind. Almost none of it is replaced by a framework later. Learn it, and keep this cheat sheet close by as a handy reference.

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Welcome to the LeetCode Solutions repository! Here, you'll find daily solutions to LeetCode problems, complete with detailed explanations and code in multiple languages.

//Given an integer array nums, return true if any value appears at least twice in the array //and return false if every element is distinct.