Queue
Haryana Board · Class 12 · Computer Science
Summary of Queue for Haryana Board Class 12 Computer Science. Key concepts, important points, and chapter overview.
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Queue is an ordered linear data structure in which insertion and deletion happen at different ends. It follows the First-In-First-Out principle, also called First Come First Served. The first item added to the queue is the first one removed. New items are added at the rear, also called the tail, and
Key Concepts
Queue is an ordered linear list
Queue is an ordered linear list of elements with different ends for adding and removing elements. It follows the FIFO strategy, so the element that en
Front is the end from
Front is the end from which elements are removed, and Rear is the end where new elements are added. Front is also called Head, and Rear is also called
Enqueue is the insertion operation
Enqueue is the insertion operation of a queue. A new element is added at the rear end.
Dequeue is the deletion operation
Dequeue is the deletion operation of a queue. One element is removed from the front end at a time.
Overflow happens when insertion is attempted
Overflow happens when insertion is attempted beyond the capacity of the queue. Underflow happens when deletion is attempted from an empty queue.
Learning Objectives
- Understand the FIFO principle of queue
- Identify front and rear ends of a queue
- Learn queue operations such as enqueue, dequeue, isEmpty, peek, isFull, and size
- Understand exceptions such as Overflow and Underflow
- Study how a queue can be implemented using Python lists
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