Frequently Asked Questions on Double-Ended Queue
What is a Deque in C?
A deque, or double ended queue is a type of queue in which insertion and removal of elements can be performed from both the front and the rear.
How is a Deque Implemented in C?
A deque in C can be implemented using a doubly linked list or a circular array It uses two pointers,
front
andback
, to keep track of both ends.
What are the Basic Operations that can be Performed on a Double-Ended Queue in C and their time complexity?
The basic operations that can be performed on a double-ended queue in C include insertion at front, insertion at rear, deletion at front, deletion at rear, check empty, check full. The time complexity for all the given opeartions is O(1).
What is the Difference Between a Deque and a Regular Queue?
Regular queues follow the First-In-First-Out (FIFO) principle, where elements are added in the back and removed from the front. Whereas deque allows for the insertion and deletion features from the front and back, allowing for greater flexibility
Can We Use a Deque as a Stack or a Queue?
Yes, a deque can be used as both a stack and a queue because it supports efficient insertions and deletions from both ends. To use it as a stack, you would typically usepush_back()
andpop_back()
. To use it as a queue, you could usepush_back()
andpop_front()
.
C implementation Double-Ended Queue
The double-ended queues, called deques for short, are a generalized form of the queue. It is exactly like a queue except that it does not follow the FIFO rule (First in first out) so, the elements can be added to or removed from either the front(head) or back(tail) of the deque.
In this article, we will learn about the double-ended queue implementation in C. We will also look at the working of the double-ended queue and the basic operations that can be performed using the double-ended queue in C.
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