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Deque
A Deque is a double-ended queue data structure. It is an implementation of a queue that supports two operations: 1. Enqueue (push) : Adds an element to t...
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A Deque is a double-ended queue data structure. It is an implementation of a queue that supports two operations: 1. Enqueue (push) : Adds an element to t...
A Deque is a double-ended queue data structure. It is an implementation of a queue that supports two operations:
Enqueue (push): Adds an element to the rear of the deque.
Dequeue (pop): Removes the front element from the deque.
Deque are implemented using two pointers, head and tail. The head points to the first element in the deque, and the tail points to the last element in the deque.
Here's a more detailed explanation with examples:
Enqueue:
Imagine a queue of people. Enqueue adds a new person to the rear of the queue.
The tail pointer points to the new element.
The head pointer points to the first element in the queue.
Dequeue:
Remove the front element from the deque.
The head pointer moves to the next element.
The tail pointer moves to the element before the head.
Deque are useful for implementing various algorithms, such as priority queues, linked lists, and hash tables. They are also used in many real-world applications, such as caching and database management