Search results
Results From The WOW.Com Content Network
The operation of adding an element to the rear of the queue is known as enqueue, and the operation of removing an element from the front is known as dequeue. Other operations may also be allowed, often including a peek or front operation that returns the value of the next element to be dequeued without dequeuing it.
The basic operations on a deque are enqueue and dequeue on either end. Also generally implemented are peek operations, which return the value at that end without dequeuing it. Names vary between languages; major implementations include:
Queues have two main operations: enqueue (adds an element to the rear of the queue) and dequeue (removes an element from the front of the queue) that follow the First In, First Out (FIFO) principle. Trees represent a hierarchical organization of elements. A tree consists of nodes connected by edges, with one node being the root and all other ...
Representation of a FIFO queue with enqueue and dequeue operations. Depending on the application, a FIFO could be implemented as a hardware shift register, or using different memory structures, typically a circular buffer or a kind of list. For information on the abstract data structure, see Queue (data structure).
In computer science, the word dequeue can be used as: A verb meaning "to remove from a queue" An abbreviation for double-ended queue (more commonly, deque
In calendar queue, enqueue (addition in a queue) and dequeue (deleting from a queue) of events in FEL is based on event time. Let the calendar queue with n buckets with w width. Then enqueue of an event with time t operates on bucket . And more than two events scheduled in the bucket according to the increased timestamp.
Other operations for priority queue can be applied similarly. For instance, k_decrease-key can be done by first applying difference and then union, which first deletes the elements and then inserts them back with the updated keys. All these operations are highly parallel, and the theoretical and practical efficiency can be found in related ...
Thus, we can perform a sequence of n dequeue operations in only time, which implies that the amortized time of each dequeue operation is . [ 5 ] Alternatively, we can charge the cost of copying any item from the input array to the output array to the earlier enqueue operation for that item.