Queue Simulator (FIFO)
A Queue Simulator that visually demonstrates FIFO operations (enqueue, dequeue, peek, etc.) with animations, a centered info panel explaining the concept, and full responsiveness for mobile and desktop.
About Queue
A queue is a fundamental data structure that follows the First In, First Out (FIFO) rule. This means that the first element added to the queue will be the first one to be removed — similar to a real-world queue of people waiting in line.
🔹 Core Operations
- Enqueue: Adds a new item to the end (rear) of the queue.
- Dequeue: Removes an item from the front of the queue.
- Peek (or Front): Shows the item at the front without removing it.
- isEmpty: Checks whether the queue has no elements.
- Clear: Removes all items, resetting the queue.
⚠️ Common Errors
- Attempting to dequeue or peek from an empty queue — results in an error or warning.
- Forgetting that the order is FIFO — not LIFO like a stack.
💡 Real-World Use Cases
- Printer Queue: Print jobs are processed in the order they are received.
- Customer Service Systems: Calls or chat requests are answered in arrival order.
- CPU Scheduling: Processes waiting for CPU time are queued by the operating system.
- Network Packets: Data packets are transmitted in the order they arrive.
- Order Processing: Online orders are handled sequentially, ensuring fairness.
🧭 Visualization Insight
In this simulator, new elements are added to the right side (rear), and removed from the left side (front), reflecting how real-world queues function.