design hashset

[Praniksha123]

No description provided.

[super30admin]

Implement Hash Set (Sample.java)

Strengths:

• Clean, readable code with good variable naming
• Correct implementation of two-level hashing
• Proper handling of edge cases (bucket 0 special case)
• Consistent code formatting and structure
• Efficient O(1) operations

Areas for Improvement:

• The variable name bucketItems could be more descriptive like itemsPerBucket or secondaryBucketSize
• Consider adding JavaDoc comments for the class and methods to improve documentation
• The solution is functionally equivalent to the reference and demonstrates good understanding of hash table concepts

VERDICT: PASS

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Implement Min Stack

1. Wrong Problem: You have submitted a solution for "Design HashSet" instead of "Implement Min Stack". Please ensure you read and understand the problem requirements before coding.

2. Missing Required Implementation: The MinStack class should have:

   • A constructor MinStack()
   • void push(int val) - push element onto stack
   • void pop() - remove top element
   • int top() - return top element
   • int getMin() - return minimum element in O(1) time

3. For the HashSet problem (if that was intended): Your implementation uses a double hashing approach which is reasonable. However, the bucket sizing could be optimized - using bucketItems = 1001 means you're creating arrays of size 1001 for each bucket, which uses more memory than necessary.

4. General Advice:

   • Always verify you're solving the correct problem
   • For MinStack, the standard approach uses two stacks: one for actual elements and one to track minimum values at each state
   • Each push should push to both stacks; pop from both; getMin returns top of min stack

VERDICT: NEEDS_IMPROVEMENT