Your solution for "Product of Array Except Self" is excellent. It efficiently computes the result in O(n) time with O(1) extra space, which meets the problem requirements and even the follow-up constraint. The code is clean and easy to understand.

However, note that you have included solutions for two other problems (Diagonal Traverse and Spiral Matrix) in the same submission. For future reference, when asked to evaluate a specific problem, please provide only the solution for that problem to avoid confusion.

One minor improvement: you could add comments to explain the two passes, which would make the code even more understandable. For example, you could comment that the first pass computes the left product for each element and the second pass multiplies by the right product.

Also, in the first pass, you initialize result[0] = 1 because there are no elements to the left of the first element. Then you iterate from index 1 to n-1, updating the running product. The second pass starts from n-2 down to 0, updating the running product for the right side and multiplying it with the existing value in result[i]. This is correct.

Overall, great job!

Strengths:

• The solution is correct and efficient, with O(n) time and O(1) extra space.
• The code is concise and uses a clear two-pass approach.

Areas for Improvement:

• Remove the print statement (print(result)) as it is not needed and may affect performance in large inputs.
• Consider adding comments to explain the purpose of each pass. For example, the first pass computes the left products, and the second pass multiplies by the right products.
• Ensure that only the relevant solution is submitted for the problem. The other two files (Diagonal Traverse and Spiral Matrix) are not part of this problem and should not be included.

Overall, the solution for "Product of Array Except Self" is excellent and meets all requirements.