Stack Operations: A Journey towards Understanding Data Structures

If 2,5,8,1 are stack content and 2 is at top what will be stack content after following operations: push(11),pop(),pop(),pop(),push(7)?

What is the final content of the stack after performing the provided operations?

The final content of the stack after performing the provided operations will be:

7, 8, 1

A stack in computer science is a data structure that stores items in a Last-In-First-Out (LIFO) manner. This means the last element added to the stack will be the first one to be removed.

Starting with the initial stack content of 2, 5, 8, 1 with 2 at the top, let's trace the operations:

1. push(11): The new stack becomes 11, 2, 5, 8, 1

2. pop(): Removing the top element (11) leaves the stack as 2, 5, 8, 1

3. pop(): Removing the top element (2) updates the stack to 5, 8, 1

4. pop(): Removing the top element (5) transforms the stack into 8, 1

5. push(7): The final stack content becomes 7, 8, 1

Note: The commas separate items in the stack for clarity, they are not part of the stack itself.

By understanding and following these operations, we can gain a deeper insight into how data structures like stacks work.