Array-1 all problems added

[megharaykar]

No description provided.

[super30admin]

Product of Array Except Self (Problem1.py)

Strengths:

• Excellent understanding of the problem constraints (O(n) time, no division)
• Correctly implements the two-pass prefix/suffix product technique
• Clean, readable code with helpful comments
• Proper handling of edge cases (zeros, negative numbers)
• Time and space complexity comments are accurate

Areas for Improvement:

• The comment "TC: O(3n) => O(n)" is slightly misleading. While technically correct (two passes + constant operations), it's more accurate to say O(2n) or simply O(n)
• Consider adding a docstring to the method for better documentation
• Could add inline comments explaining the logic within the loops for even better readability

This is a solid, optimal solution that demonstrates good algorithmic thinking.

VERDICT: PASS

---

Diagonal Traverse (Problem2.py)

Strengths:

1. Correct implementation of the diagonal traversal algorithm
2. Clean and readable code structure
3. Proper handling of all boundary conditions
4. Efficient O(m*n) time complexity
5. Good use of boolean flag for direction switching

Areas for Improvement:

1. Variable naming: 're' could be more descriptive as 'result' or 'result_arr'
2. Consider adding comments to explain the diagonal traversal logic, especially the direction switching
3. The condition checks could be slightly reordered for slightly better efficiency (checking the more common case first), though this is a minor optimization

The solution is functionally correct and follows good programming practices. It matches the reference solution in both time and space complexity.

VERDICT: PASS

---

Spiral Matrix (Problem3.py)

Strengths:

• Excellent implementation that matches the reference solution's logic
• Proper boundary condition checks prevent index errors
• Clear and readable code structure
• Handles all edge cases correctly (single row, single column, rectangular matrices)

Areas for Improvement:

• Consider adding a docstring to explain the algorithm
• Could add type hints for better code documentation (e.g., def spiralOrder(self, matrix: List[List[int]]) -> List[int]:)

The solution demonstrates a solid understanding of the problem and implements an efficient, correct algorithm.

VERDICT: PASS