What is a queue? What difference between queue and stack?
What is a queue? How is it different from a stack?
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A queue is a form of linear structure that follows the FIFO (First In First Out) approach for accessing elements. Dequeue, enqueue, front, and rear are basic operations on a queue. Like a stack, a queue can be implemented using arrays and linked lists.
In a stack, the item that is most recently added is removed first. Contrary to this, in the case of a queue, the item least recently added is removed first.