Mock interview1

[YogeshPardeshi]

No description provided.

[super30admin]

Interview Problem: Find Missing Number in a sorted array (Problem1.java)

Strengths:

• The solution correctly implements the binary search approach for finding the missing number
• Clean, readable code with proper indentation and formatting
• Good variable naming (a, b, mid are standard for binary search)
• Proper handling of the while loop condition (b - a) > 1
• Correct implementation of the index-difference comparison logic

Areas for Improvement:

• The solution is missing a main method to demonstrate usage and test the code
• No input validation or edge case handling (e.g., empty array, missing first number, missing last number)
• Could benefit from comments explaining the binary search logic
• Consider adding a test case to verify the solution works correctly

Time Complexity: O(log n) - same as reference solution
Space Complexity: O(1) - same as reference solution

VERDICT: NEEDS_IMPROVEMENT

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Interview Problem: Design Min Heap (Problem2.java)

Strengths:

• Solid understanding of heap data structure
• Correct implementation of all core operations (insert, removeMin, heapify)
• Good encapsulation with private helper methods
• Clean code structure and naming conventions for methods

Areas for Improvement:

1. Critical Fix Required: Rename the class from Problem2 to MyMinHeap to match the constructor name
2. Consider adding a printHeap() method for debugging purposes (as shown in reference solution)
3. Add comments to explain the heapify algorithm, especially the recursive logic
4. Consider adding boundary checks or throwing exceptions instead of silent returns when heap is full

VERDICT: NEEDS_IMPROVEMENT