Strengths:

1. The student has correctly implemented the problem with two different approaches, showing a good understanding of optimization techniques.
2. The code is well-structured and readable, with clear comments explaining the logic.
3. The student has considered both time and space complexity, providing an optimized solution that outperforms the reference solution.

Areas for Improvement:

1. The problem title in the reference solution is "Array-1", but the student's solution is named "ProductOfArrayExceptSelf". It would be better to align the naming with the problem statement for clarity.
2. The initializer in the class includes test cases, which is good for testing but might not be necessary in a production environment. Consider separating the test cases into a separate test file.
3. The comments in the code are helpful, but some of them could be more concise. For example, "forward pass left to right" is clear enough without the additional "//forward pass left to right" comment.