Learn how to implement a Queue using arrays (a fixed-capacity circular buffer) in Python — beginner friendly, step-by-step.
In this video you’ll learn:
✅ What a queue (FIFO) is
✅ How to implement enqueue, dequeue, and peek using a Python list as a fixed-size array
✅ The circular buffer trick: rear_index = (front + size) % capacity
✅ Time & space complexity and edge cases (full / empty queues)
✅ Example usage and a simple visual demonstration
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