Grokking Data Structures & Algorithms for Coding Interviews
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Introduction to Queues
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What is a Queue?

A queue is a linear data structure that follows the First-In, First-Out (FIFO) principle. This means that the first element added to the queue is the first one to be removed, just like a real-life queue where people wait in line for a service.

Real-World Analogy

Imagine you are waiting in line at a movie theater:

  1. The first person in the line is the first to get their ticket.
  2. When a new person arrives, they join at the end of the queue.
  3. The queue progresses in order, ensuring fairness in processing.

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