This lesson gives students a clear, practical understanding of the Queue data structure, showing how FIFO systems work, how queues are implemented, and where they are used in real computing systems.

Learners see queues as both a concept and a working C++ implementation, removing confusion around insertion/removal rules, memory limits, and design choices.

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🧠 What Students Will Actually Master ✨✨

️✏️ What a Queue is and why it exists
✏️ The FIFO (First In, First Out) principle
✏️ Core queue operations:
  • put() / enqueue
  • get() / dequeue
  • front()
  • isEmpty()
  • isFull()
✏️ Queue implementation using arrays
✏️ Handling overflow and underflow
✏️ Circular behavior in array-based queues
✏️ Queue implementation using linked lists
✏️ Constant-time insertion and removal
✏️ Memory trade-offs: array vs linked list queues
✏️ Understanding front and rear pointers
✏️ Writing a complete Queue class in C++

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🎯 The Value for Teachers & Classrooms ✨✨

✯✯ Covers both major queue implementations in one lesson
✯✯ Reinforces correct FIFO thinking
✯✯ Connects theory to real-world systems
✯✯ Includes classic applications:
  • CPU & disk scheduling
  • Print spooling
  • Interrupt handling
  • Breadth-First Search (BFS)
  • Call center systems
✯✯ Introduces queue variations:
  • Circular Queue
  • Double-Ended Queue (Deque)
  • Priority Queue
✯✯ Saves teaching time with structured code examples
✯✯ Ideal prerequisite for Operating Systems, Graphs, and Algorithms

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