Binary-Search-2

[mananrg]

No description provided.

[super30admin]

Find the First and Last Position of an Element in given Sorted Array (problem1.py)

Strengths:

• Clean implementation of binary search for both first and last positions
• Good edge case handling (empty arrays, boundary checks)
• The optimization of searching for the last occurrence starting from the first occurrence is smart
• Well-documented with clear comments
• Consistent coding style throughout

Areas for Improvement:

• Consider adding an early exit when first == -1 to avoid calling binarySecond unnecessarily:

  first = binaryFirst(...)
  if first == -1:
      return [-1, -1]
  last = binarySecond(...)

• The function names binaryFirst and binarySecond could be more descriptive (e.g., findFirstOccurrence and findLastOccurrence)

Minor Note:
The solution uses List[int] type hint but doesn't show the import statement for List. While this is typically imported from typing, it's assumed to be present in the full solution.

VERDICT: PASS

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Find the Minimum Element in a Rotated Array(sorted) (problem2.py)

Strengths:

• Correctly implements binary search for the rotated array problem
• Good use of comments to explain the logic
• Proper handling of boundary conditions (mid > 0 check)
• Clean and readable code structure
• Matches the reference solution's efficiency

Areas for minor improvement:

• Could add type hints for better code documentation (e.g., nums: List[int] -> int)
• The import statement for List is missing in the provided code snippet
• Could consider adding docstring for the class/method

The solution is functionally correct and efficient. The minor suggestions are optional improvements and do not affect the correctness of the solution.

VERDICT: PASS

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Find the Peak Element (problem3.py)

Strengths:

• Correctly implements binary search for peak finding with proper boundary checks
• Handles edge cases at array boundaries correctly
• Clean and readable code structure
• Matches the reference solution's approach and complexity

Areas for Improvement:

• The code is functionally equivalent to the reference solution and follows good practices
• Minor suggestion: Consider using n variable for array length (as in reference) to avoid repeated len() calls, though this is a very minor optimization
• The solution is correct and well-written overall

VERDICT: PASS