Design-2 solution

[sandeepkumarks]

No description provided.

[super30admin]

Create Queue using Stacks (MyQueue.java)

Strengths:

1. Excellent documentation with time/space complexity annotations and problem-solving approach
2. Clean, readable code with meaningful variable names
3. Correct implementation of the two-stack queue pattern
4. Proper use of private final for encapsulation
5. Good comment explaining the algorithm's logic

Areas for Improvement:

1. The pop() method could be slightly more defensive by checking if stack2 is empty after peek() and returning a default value, though the problem guarantees valid calls
2. Consider adding @OverRide annotations for better code clarity (though not strictly necessary)
3. The comments could include a brief explanation of why the amortized time is O(1)

The solution is functionally correct and follows good coding practices. It matches the reference solution in both approach and efficiency.

VERDICT: PASS

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Implement Hash Map (MyHashMap.java)

Strengths:

1. Excellent use of two-level hashing with lazy bucket initialization - this is more memory-efficient than the reference solution
2. Clean code structure with well-named constants and methods
3. Comprehensive documentation explaining the approach
4. Handles edge cases (like the special case for primary bucket 0)
5. All operations achieve O(1) time complexity

Areas for Improvement:

1. The comment "Time Complexity : put: O(1), get: O(1), remove: O(1)" is correct but could mention "amortized" to be more precise
2. The space complexity comment "O(10^6)" could be clarified as "O(10^6) worst case, O(k) actual where k is number of buckets used"
3. Consider adding null checks or input validation for edge cases (though not strictly required by the problem)

VERDICT: PASS