Completed PreCourse-1

[sreevardhan1099]

Completed PreCourse-1

Exercise_1 : Implement Stack using Array.

Exercise_2 : Implement Stack using Linked List.

Exercise_3 : Implement Singly Linked List.

[super30admin]

The student's solution demonstrates a good understanding of basic data structures (stack and linked list) and their implementations. Here's a detailed evaluation:

1. Correctness:

• Exercise_1 (Array-based Stack): Correctly implements stack operations (push, pop, peek) with proper overflow/underflow checks.
• Exercise_2 (Linked List-based Stack): Properly implements stack operations using linked list nodes.
• Exercise_3 (Linked List): Correctly implements insertion and printing of a singly linked list.

2. Time Complexity:

• Stack operations (push/pop/peek) are correctly identified as O(1) for both implementations.
• Linked list insertion and printing are correctly identified as O(n).

3. Space Complexity:

• Correctly identified for all implementations (O(MAX) for array stack, O(n) for linked list implementations).

4. Code Quality:

• Good use of comments explaining the approach.
• Proper error handling for stack underflow/overflow.
• Consistent indentation and formatting.
• Could improve by adding more detailed comments about the overall approach at the class level.

5. Efficiency:

• All implementations are optimal for their respective data structures.
• No obvious inefficiencies found.

Areas for improvement:

• Could add more edge case testing (e.g., testing stack operations after reaching capacity).
• Could add input validation (though not strictly necessary for these exercises).
• Could consider making the MAX size configurable rather than hardcoded in Exercise_1.