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Mar 18, 2023 · Deque or Double Ended Queue is a generalized version of Queue data structure that allows insert and delete at both ends. Operations on Deque: Below is a table showing some basic operations along with their time complexity, performed on deques.
- C implementation Double-Ended Queue
The double-ended queues, called deques for short, are a...
- C implementation Double-Ended Queue
- Insert Elements at Front
- Insert Elements at Back
- Delete First Element
- Delete Last Element
- Check If Queue Is Empty
- Check If Queue Is Full
- Return First Element
First we check if the queue is full. If its not full we insert an element at front end by following the given conditions : 1. If the queue is empty then intialize front and rear to 0. Both will point to the first element. 2. Else we decrement front and insert the element. Since we are using circular array, we have to keep in mind that if front is e...
Again we check if the queue is full. If its not full we insert an element at back by following the given conditions: 1. If the queue is empty then intialize front and rear to 0. Both will point to the first element. 2. Else we increment rear and insert the element. Since we are using circular array, we have to keep in mind that if rear is equal to ...
In order to do this, we first check if the queue is empty. If its not then delete the front element by following the given conditions : 1. If only one element is present we once again make front and rear equal to -1. 2. Else we increment front. But we have to keep in mind that if front is equal to SIZE-1 then instead of increasing it by 1 we make i...
Inorder to do this, we again first check if the queue is empty. If its not then we delete the last element by following the given conditions : 1. If only one element is present we make front and rear equal to -1. 2. Else we decrement rear. But we have to keep in mind that if rear is equal to 0 then instead of decreasing it by 1 we make it equal to ...
It can be simply checked by looking where front points to. If front is still intialized with -1, the queue is empty.
Since we are using circular array, we check for following conditions as shown in code to check if queue is full.
If the queue is not empty then we simply return the value stored in the position which front points.
In this tutorial, you will learn what a double ended queue (deque) is. Also, you will find working examples of different operations on a deque in C, C++, Java and Python.
The deque stands for Double Ended Queue. Deque is a linear data structure where the insertion and deletion operations are performed from both ends. We can say that deque is a generalized version of the queue. Though the insertion and deletion in a deque can be performed on both ends, it does not follow the FIFO rule.
In computer science, a double-ended queue (abbreviated to deque, / dɛk / DEK [1]) is an abstract data type that generalizes a queue, for which elements can be added to or removed from either the front (head) or back (tail). [2]
May 23, 2024 · 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.
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6 days ago · Double ended queues, called deques for short, are a generalized form of the queue. It is exactly like a queue except that elements can be added to or removed from the head or the tail.
