What is a deque data structure?

Deque or Double Ended Queue is a type of queue in which insertion and removal of elements can either be performed from the front or the rear. Thus, it does not follow FIFO rule (First In First Out).

What are the applications of deque?

Some Practical Applications of Deque: Applied as both stack and queue, as it supports both operations. Storing a web browser’s history. Storing a software application’s list of undo operations. Job scheduling algorithm.

What are the different types of deque?

This general data class has some possible sub-types: An input-restricted deque is one where deletion can be made from both ends, but insertion can be made at one end only. An output-restricted deque is one where insertion can be made at both ends, but deletion can be made from one end only.

What is deque Mcq?

Explanation: A dequeue or a double ended queue is a queue with insert/delete defined for both front and rear ends of the queue.

What are the advantages of Double Ended Queue?

With double ended queues, you are able to remove and add items from both the front and the back of the queue. In a queue, you can only add data to the back and remove it from the front.

Is deque a doubly linked list?

Deque or Double Ended Queue is a generalized version of Queue data structure that allows insert and delete at both ends. In previous post Implementation of Deque using circular array has been discussed.

What is dequeue operation?

Dequeue Operation in Queue: In Queue, accessing the content while removing it from the front end of the queue, is known as a Dequeue Operation.

How is deque stored?

A deque is generally implemented as a collection of memory blocks. These memory blocks contains the elements at contiguous locations. When we create a deque object it internally allocates a memory block to store the elements at contigious location.

Is deque a FIFO?

(A deque can also be used to implement a stack, a topic we will explore in the exercises). As with the stack, it is the FIFO (first in, first out) property that is, in the end, the fundamental defining characteristic of the queue, and not the names of the operations.