Question

Write a pseudocode function TOSTACK(q) that takes a queue q and returns a stack such that the head of the queue is the same element as the top of the stack. For example, TOSTACK([a, b, c]) = .

Answer 1

In order to convert a queue into a stack in pseudocode, follow these steps: create an empty stack, dequeue elements from the queue and push them onto the stack, and then return the stack.

Step-by-step explanation:

In pseudocode, the transformation of a queue into a stack involves the utilization of two distinct data structures: a queue and a stack.

The following pseudocode outlines the function TOSTACK(q):

Function TOSTACK(q):

Create an empty stack called 'stack'.

While the queue 'q' is not empty:

Dequeue an element from 'q' and push it onto the stack.

End While

Return the stack.

For instance, if the input queue is [a, b, c], executing the function TOSTACK([a, b, c]) will yield a stack with [c, b, a], where 'c' assumes the top position, aligning with the head of the original queue.

This pseudocode illustrates a systematic process for converting a queue into a stack, facilitating efficient manipulation and organization of elements within the data structures.