Circular Queue Data Structure Program
To overcome this problem we use circular queue data structure. What is Circular Queue? A Circular Queue can be defined as follows. Circular Queue is a linear data structure in which the operations are performed based on FIFO (First In First Out) principle and the last position is connected back to the first position to make a circle.
Prerequisite – Circular Queue is a linear data structure in which the operations are performed based on FIFO (First In First Out) principle and the last position is connected back to the first position to make a circle. It is also called ‘Ring Buffer’. In a normal Queue, we can insert elements until queue becomes full. But once queue becomes full, we can not insert the next element even if there is a space in front of queue. Operations on Circular Queue:. Front: Get the front item from queue. Rear: Get the last item from queue.
enQueue(value) This function is used to insert an element into the circular queue. In a circular queue, the new element is always inserted at Rear position.
Steps:. Check whether queue is Full – Check ((rear SIZE-1 && front 0) (rear front-1)). If it is full then display Queue is full.
If queue is not full then, check if (rear SIZE – 1 && front!= 0) if it is true then set rear=0 and insert element. deQueue This function is used to delete an element from the circular queue.
In a circular queue, the element is always deleted from front position. Steps:. Check whether queue is Empty means check (front-1). If it is empty then display Queue is empty. If queue is not empty then step 3.
- Sep 26, 2012 Program of Circular Queue using c++ //PROGRAM FOR CIRCULAR QUEUE.
- Program of Circular Queue using c++ //PROGRAM FOR CIRCULAR QUEUE.
Queue Circular Array
Check if (frontrear) if it is true then set front=rear= -1 else check if (frontsize-1), if it is true then set front=0 and return the element.
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