What are the basic operations of a Queue? (Enqueue, Dequeue)

Difficulty: 2/10

enqueue, dequeue, queue implementation

Queue Operations

The core Queue operations are Enqueue and Dequeue. Enqueue inserts an element at the rear, while Dequeue removes the element at the front. A production-quality queue should also define operations for inspecting the front and checking whether the queue is empty.

javascript

1
Enqueue adds an element to the rear.
2
Dequeue removes the oldest element from the front.
3
With head and tail pointers, both can be O(1).
4
Using an array with repeated removal from index 0 can cause O(n) shifts and should generally be avoided.
5
A circular buffer or linked queue provides efficient queue operations.

Scenario Questions

0-2 years experience

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