Design 1 Completed

[Pranitha11121999]

No description provided.

[super30admin]

1. Correctness: The HashSet implementation does not meet the problem requirements. The problem specifically asks for a HashSet without using built-in hash table libraries, but the student's solution uses a list, which is not a hash-based structure.
2. Time Complexity: The current implementation has O(n) time complexity for add, remove, and contains operations, which is inefficient compared to the O(1) time complexity of the reference solution. Consider using a hash-based approach with primary and secondary buckets to achieve O(1) operations.
3. Space Complexity: The space complexity is not optimized. Using a list to store all elements is not efficient. The reference solution uses a 2D boolean array to minimize space usage.
4. Code Quality: The code is readable and well-structured, but it does not follow the problem's requirements. The unused variables primary and secondary and the unused methods key1 and key2 indicate an incomplete or incorrect approach.
5. Efficiency: The solution can be optimized by implementing a proper hash-based structure. The reference solution provides a good example of how to achieve this.

For the HashSet problem, consider the following improvements:

• Implement a hash-based structure using primary and secondary buckets.
• Use a 2D array or similar structure to store elements efficiently.
• Ensure all operations (add, remove, contains) run in O(1) time.

For the MinStack problem, the implementation is correct and efficient. Good job!