Search inside a Rotated Sorted Array (P1.py)

Your solution is well-implemented and correctly solves the problem. A few points to consider:

1. Strengths:

   • Clean and readable implementation of the binary search logic
   • Correctly handles both left and right sorted halves
   • Proper boundary condition checks
   • Efficient O(log n) time complexity

2. Minor improvements to consider:

   • Consider using low + (high - low) // 2 instead of (low + high) // 2 to prevent potential integer overflow in languages like C++/Java (though Python handles big integers natively, it's a good habit)
   • The solution is functionally equivalent to the reference solution

3. Testing: Your implementation should correctly handle all edge cases including:

   • Single element arrays
   • Target not in array
   • Target at various positions (beginning, middle, end of rotated array)

VERDICT: PASS

Search Inside a Sorted Array whose Length is unknown (P2.py)

Strengths:

• Correctly implements the exponential search + binary search pattern
• Clean, readable code with appropriate comments
• Handles edge cases properly (returns -1 when target not found)
• Good use of Python's integer division operator

Areas for Improvement:

• The solution is functionally equivalent to the reference and doesn't have significant issues
• One minor observation: The code could benefit from a small optimization by storing reader.get(mid) in a variable to avoid multiple calls, though this is a micro-optimization that doesn't affect the O(log n) complexity

The solution is well-written and correctly solves the problem.

VERDICT: PASS

Search a 2D Matrix (P3.py)

Strengths:

• Clean and readable implementation of binary search
• Proper handling of edge cases (empty matrix check)
• Correct index mapping from 1D to 2D
• Good variable naming conventions

Areas for Improvement:

• Consider using n instead of cols for consistency with common algorithmic notation (though this is minor)
• The solution is functionally equivalent to the reference and demonstrates solid understanding of the problem

The solution is correct, efficient, and well-written. It demonstrates a good understanding of binary search and matrix traversal.

VERDICT: PASS