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Queue

Explore the queue data structure in this lesson, understanding its core operations like enqueue and dequeue with constant time complexity. Learn how to implement a queue in Python and discover real-world applications such as CPU scheduling, data synchronization, and breadth-first search. This lesson also covers queue variants like double-ended and circular queues to deepen your data structure knowledge.

The queue is similar to the stack but with some fundamental differences. It’s an abstract data type with the following operations defined on it:

  • Enque (Key): Insert an element in the collection.
  • Deque(): Remove the oldest added element from the collection.
  • isEmpty(): Determine whether the queue is empty or not.
  • isFull(): Determine whether the queue is full or not.

    All of the ...