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A double ended queue, or deque, is a queue in which you can access or modify both the head and the tail. The front pointer can be used for insertion (apart from its usual operation i.e. deletion) and rear pointer can be used for deletion (apart from its usual operation i.e. insertion)

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Double ended stack?

Double ended queue


What are types of Queue?

Queue is a data structure which is based on FIFO that is first in first out. Following are the types of queue: Linear queue Circular queue Priority queue Double ended queue ( or deque )


Real time example for double ended queue?

glass tumler


How do you insert front in double ended queue?

the double linked list don't understanding that's why i am searching net.....


What is queue explain the basic element of queue?

The queue is a linear data structure where operations of insertion and deletion are performed at separate ends also known as front and rear. Queue is a FIFO structure that is first in first out. Following are the types of queue: Linear queue Circular queue Priority queue Double ended queue ( or deque )


Which data structure allows deletion from both ends and insertion only from one end?

Deque double ended queue


How do you determine symmetry of a data structure For example how do you know if a Stack or a queue or a priority queue or a double ended queue are symmetric?

You can determine symmetry of a data structure in two ways. One is when the stacks and queues data are put in the application and when the stacks are put in during run-time.


What is difference between circular queue and double ended queue?

A circular queue is a linear data structure that connects the last position back to the first position, allowing for efficient use of space by reusing empty slots as elements are dequeued. In contrast, a double-ended queue (deque) allows insertion and deletion of elements from both ends—front and rear—providing more flexibility in how elements are managed. While a circular queue has a fixed size and operates in a FIFO (First In, First Out) manner, a deque can grow in both directions and supports both FIFO and LIFO (Last In, First Out) operations.


What are the different types of queues?

A priority queue is a queue in which each element is inserted or deleted on the basis of their priority. A higher priority element is added first before any lower priority element. If in case priority of two element is same then they are added to the queue on FCFS basis (first come first serve). Mainly there are two kinds of priority queue: 1) Static priority queue 2) Dynamic priority queue


Difference between circular queue and De queue?

The queue is a linear data structure where operations of insertion and deletion are performed at separate ends also known as front and rear. Queue is a FIFO structure that is first in first out. A circular queue is similar to the normal queue with the difference that queue is circular queue ; that is pointer rear can point to beginning of the queue when it reaches at the end of the queue. Advantage of this type of queue is that empty location let due to deletion of elements using front pointer can again be filled using rear pointer. A double ended queue (or deque ) is a queue where insertion and deletion can be performed at both end that is front pointer can be used for insertion (apart from its usual operation i.e. deletion) and rear pointer can be used for deletion (apart from its usual operation i.e. insertion)


What do you understand by deque?

A double ended queue (or deque ) is a queue where insertion and deletion can be performed at both end that is front pointer can be used for insertion (apart from its usual operation i.e. deletion) and rear pointer can be used for deletion (apart from its usual operation i.e. insertion)


What is the need of deque?

A double ended queue (or deque ) is a queue where insertion and deletion can be performed at both end that is front pointer can be used for insertion (apart from its usual operation i.e. deletion) and rear pointer can be used for deletion (apart from its usual operation i.e. insertion). So when we need to insert or delete at both end we need deque.