Web Reference: Jan 20, 2026 · Queue is a linear data structure that follows FIFO (First In First Out) Principle, so the first element inserted is the first to be popped out. It is an ordered list in which insertions are done at one end which is known as the rear and deletions are done from the other end known as the front. A queueis a linear data structure where elements are stored in the FIFO (First In First Out) principle where the first element inserted would be the first element to be accessed. A queue is an Abstract Data Type (ADT) similar to stack, the thing that makes queue different from stack is that a queue is open at both its ends. The data is inserted int... It is similar to the ticket queue outside a cinema hall, where the first person entering the queue is the first person who gets the ticket. In this tutorial, you will understand the queue data structure and it's implementations in Python, Java, C, and C++.
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