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Your solution for "Product Except Self" is excellent. It is efficient, both in time (O(n)) and space (O(1) extra space), and correctly implements the algorithm. The code is clean and easy to understand. However, note that the problem you solved is "Product Except Self", but you submitted multiple files including solutions for other problems. When submitting a solution for a specific problem, ensure that you only provide the code for that problem. Also, in the comment for space complexity, it might be helpful to clarify that the output array is not considered extra space, so the extra space used is indeed O(1). One minor improvement: in the second loop, you start from len(nums)-2 down to 0. This is correct, but you can also start from the last element and update the suffix product after multiplying. However, your current approach is correct and efficient. Overall, great job! |
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