Completed Binary Search 2

[MrunaliVaidya98]

No description provided.

[super30admin]

Find First and Last Position of Element in Sorted Array (findPeakElement.java)

• The code correctly implements binary search, but for a completely different problem
• The binary search implementation itself is clean and follows best practices (using low + (high-low)/2 to avoid overflow)
• Good variable naming and code structure
• However, the student appears to have submitted code for the wrong LeetCode problem
• To solve the actual problem, the student needs to implement two binary searches: one for the first occurrence and one for the last occurrence of the target

VERDICT: NEEDS_IMPROVEMENT

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Find Minimum in Rotated Sorted Array (findMin.java)

Strengths:

• Correct binary search logic for finding minimum in rotated array
• Efficient O(log n) time and O(1) space complexity
• Clean and concise implementation
• Proper handling of all test cases

Areas for Improvement:

• Follow Java naming conventions: class names should start with uppercase (Solution)
• Add comments to explain the logic, especially the key insight about comparing nums[mid] with nums[right]
• Consider adding a check for edge cases like empty arrays if the problem constraints allowed them

VERDICT: PASS

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Find Peak Element (searchRange.java)

1. Read the problem carefully: You submitted a solution for a completely different problem. The "Find Peak Element" problem requires finding an element greater than its neighbors, not searching for a target value.

2. Fix syntax errors: "pblic" should be "public" - this is a basic typo that would cause compilation failure.

3. Fix method signatures: The problem asks for a single index return, but your solution returns an int array.

4. Fix logic errors: In findLast, the condition else if(nums[mid]<target) is redundant and incorrect. Also, methods don't return values in all paths.

5. Study the correct approach: For peak element finding, use binary search comparing nums[mid] with nums[mid+1] to determine which direction to search.

VERDICT: NEEDS_IMPROVEMENT