Completed Design 1

[Keerthi0910]

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[super30admin]

Design HashSet (Hashset.java)

EURL@
data:

• 'https://leetcode.com/problems/design-hashset/'
• 'https://leetcode.com/problems/design-hashset/solution/'
• 'https://booleanpirate.com/2018/04/hashset-implementation-in-java/'
• Hashset.java
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VERDICT: NEEDS_IMPROVEMENT

---

Min Stack (MinStack.java)

Strengths:

• Correct implementation of the two-stacks approach.
• All operations are O(1) as required.
• Good code organization and readability.
• Helpful comments documenting time/space complexity.

Areas for improvement:

• Consider using min directly in getMin() for consistency with how min is maintained throughout the class. Currently, min is updated in push() and pop(), but getMin() doesn't use it — instead it uses minStack.peek(). While both work, using min directly would be more consistent and slightly more efficient (avoiding a stack peek).
• The sentinel value Integer.MAX_VALUE in minStack is a clever way to handle the initial state, but you could also just check if minStack is empty before peeking. Either approach is fine.

VERDICT: PASS