Stack Reversal using Recursion Quiz Online Practice Test

Test Name:	Stack Reversal using Recursion Quiz
Subject Category:	Computer Science
Test Type:	Multiple Choice Questions
Total Score / Questions:	7 / 7
Time Allowed:	10 Min
Who Should Practice this Test:	Students, job seekers, or professionals preparing for competitive exams and interviews.

Stack Reversal using Recursion MCQ Quiz Online Practice Test

1. Which statement accurately describes the behavior of a stack?

The pop operation removes the topmost element

The pop operation removes the bottommost element

The push operation adds a new element at the bottom

The push operation removes the topmost element

2. Determine the space complexity of a recursive algorithm used to reverse a stack:

O(1)

O(log n)

O(n)

O(n log n)

3. How can a stack be reversed without using additional space?

By using recursion

By implementing the stack with a linked list

By employing an extra stack

It is not possible

4. In a stack implemented using a linked list, which node is considered the top of the stack?

The last node

The first node

A random node

The middle node

5. What is the time complexity of reversing a stack when it is implemented using a linked list?

O(n)

O(n log n)

O(n²)

O(log n)

6. In the array-based implementation of a stack, which operation can take O(n) time in the worst case?

Pop

Push

IsEmpty

All operations (pop, push, and isEmpty) take constant time

7. What is the time complexity of a recursive algorithm used to reverse a stack?

O(n)

O(n log n)

O(log n)

O(n²)

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