Implement hash map using linear chaining. Implement queue using stacks

[paridhimalviya]

Implement hash map using linear chaining.
Implement queue using two stacks. Stacks are implemented using linked lists.

[super30admin]

Strengths:

• The student has correctly identified the approach of using two stacks to implement a queue.
• The code is well-structured and readable.
• The push() and pop() methods are implemented correctly.

Areas for Improvement:

• The peek() method should be optimized to only transfer elements when outStack is empty, similar to the pop() method.
• The use of custom stack and linked list implementations adds unnecessary complexity. Using simple arrays would be more straightforward for this problem.
• The initialization code in the QueueImpl class should be removed or moved to a separate test case.

[super30admin]

Strengths:

1. Good use of Swift language features and custom data structures.
2. Clear separation of concerns between the queue implementation and the stack implementation.
3. Proper handling of the stack operations in the pop() function.

Areas for Improvement:

1. The peek() function should only transfer elements from inStack to outStack when outStack is empty, similar to the pop() function. Currently, it transfers all elements every time, which is inefficient.
2. The initialization code with test cases should be separated from the class implementation for better code organization.
3. Consider adding comments to explain the algorithm's logic, especially for the peek() and pop() functions.
4. The isEmpty() function could be simplified to just return the result of the logical AND operation without parentheses.