Completed Design 2 problems

[abhayb94]

Implemented hashmap using both double hashing and chaining.
And queue using two stacks

[super30admin]

Strengths:

• The student has demonstrated a good understanding of the problem and implemented correct solutions.
• The code is well-commented and follows good practices.
• The time and space complexity analyses are accurate and well-explained.
• The student has provided multiple implementations (double hashing and chaining) for the HashMap problem, showing a good understanding of different approaches.

Areas for Improvement:

• While the HashMap implementations are correct and well-done, they were not part of the reference solution for this problem. It would be better to focus on the queue implementation when submitting a solution for a specific problem.
• The comments in the queue implementation could be slightly more detailed to explain why the amortized time complexity is O(1) for pop and peek operations.