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Chapter 18: Problem 9

When an element is removed from a queue, where is it removed from?

Short Answer

Expert verified
Answer: An element is removed from the front of the queue when using the dequeue operation.

Step by step solution

01

Introduction to Queues

A queue is a data structure that stores elements in a linear format, following the First-In-First-Out (FIFO) order. This means that the element inserted first in the queue will be the first one to be removed, and so on.
02

Basic Operations in a Queue

There are two primary operations in a queue: enqueue and dequeue. - Enqueue: This operation adds an element at the end (rear) of the queue. - Dequeue: This operation removes an element from the front of the queue.
03

Element Removal in Queue

When an element is removed from a queue using the dequeue operation, it is removed from the front of the queue. In a FIFO order, the element that has been in the queue the longest will be removed.

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Most popular questions from this chapter

Give pseudocode that implements a queue using two stacks. The queue operations enqueue, dequeue, and empty must be implemented in terms of the \(p u s h, p o p,\) and empty stack operations.

What is the difference between a static stack and a dynamic stack?

Describe two operations that all queues perform.

Suppose the following operations are performed on an empty queue: enqueue (5) enqueue (7) enqueue( 9 ) enqueue (12)

What element is retrieved from a stack by the pop operation?
See all solutions

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