Array1

[YogeshPardeshi]

No description provided.

[super30admin]

Product Except Self (Problem1.java)

Strengths:

• Excellent implementation of the optimal O(n) time algorithm
• Correct use of O(1) extra space (excluding output array)
• Clean, readable code with meaningful variable names
• Proper initialization strategy for the result array
• Good use of two-pass approach to combine prefix and suffix products

Areas for Improvement:

• Consider adding a brief comment explaining the algorithm's logic for future maintainability
• The variable name rp could be more descriptive (e.g., runningProduct or rightProduct)
• Could add a check for edge cases like empty or single-element arrays for robustness

Comparison to Reference:
The student's solution is significantly better than the reference solution in both time complexity (O(n) vs O(n²)) and follows the problem's requirement of not using division. The reference solution is a brute-force approach that the problem explicitly asks to avoid.

VERDICT: PASS

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Diagonal Traverse (Problem2.java)

Strengths:

• The solution is logically correct and produces the correct output for diagonal traversal
• Code structure is clean with meaningful variable names
• Proper handling of all boundary conditions
• Efficient use of boolean flag for direction management

Areas for Improvement:

• Consider adding comments to explain the diagonal traversal logic, especially the boundary condition handling
• The solution could benefit from early return for edge cases (though constraints guarantee m,n >= 1)
• Variable naming could be more descriptive (e.g., isGoingUp instead of dir for better readability)

The solution is functionally equivalent to the reference solution and demonstrates a solid understanding of the problem.

VERDICT: PASS

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Spiral Matrix (Problem3.java)

Strengths:

• Correct implementation of the spiral traversal algorithm
• Proper handling of edge cases (rectangular matrices, single row/column scenarios)
• Clean and readable code structure
• Good variable naming conventions
• Correct use of conditional guards to prevent duplicate traversals

Areas for Improvement:

• The code formatting could be more consistent (spacing around operators, braces)
• Consider adding comments explaining the boundary movement logic for better maintainability
• The solution is functionally equivalent to the reference, but no additional optimizations are needed as the current approach is already optimal

Time Complexity: O(m*n) - Same as reference solution
Space Complexity: O(1) extra space (excluding output list) - Same as reference solution

VERDICT: PASS