Binary Search 1

[KartavyaBhatt]

No description provided.

[super30admin]

Search inside a Rotated Sorted Array (Problem_1.py)

Strengths:

• Clear and well-documented code with explanatory comments
• Correct implementation of the rotated sorted array search algorithm
• Proper handling of edge cases (base case when l > r)
• Good use of descriptive variable names

Areas for Improvement:

• The recursive approach uses O(log n) space complexity due to call stack. Consider converting to an iterative approach (like the reference solution) to achieve O(1) space complexity.
• The solution could benefit from adding type hints for better code documentation.
• The comment at the top is helpful but could be more concise.

VERDICT: PASS

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Search Inside a Sorted Array whose Length is unknown (Problem_2.py)

This is a solid implementation that correctly solves the problem. The approach of first finding the bounds using exponential search, then applying binary search, is the standard and optimal solution for this problem.

Strengths:

• Clean, readable code with helpful comments
• Correctly handles the unknown array size via exponential search
• Proper use of mid = low + (high - low) // 2 to avoid potential integer overflow (though less of a concern in Python)
• Well-structured with clear logic flow

Areas for minor improvement:

• The comment could be slightly more detailed about why we move low = high instead of just low = high + 1 in the exponential search phase
• Consider adding a brief docstring to the method for completeness

Overall, this is a correct and efficient solution that meets all requirements.

VERDICT: PASS

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Search a 2D Matrix (Problem_3.py)

Strengths:

1. Well-structured solution with clear separation of concerns using helper methods
2. Correctly implements binary search logic for both row and column searches
3. Achieves the required O(log(m*n)) time complexity
4. Good variable naming and readable code structure
5. Handles edge cases appropriately (returns -1 when no suitable row found)

Areas for Improvement:

1. Remove the debug print(row) statement before final submission
2. Consider adding type hints for better code documentation
3. The two-step approach is correct but slightly more complex than the reference solution; the reference's single binary search on a flattened matrix is more elegant
4. Could add docstrings to the helper methods for better documentation

The solution is functionally correct and meets all requirements. The two-step approach is a valid alternative to the reference solution.

VERDICT: PASS