What is a circular queue write an algorithm for insertion and deletion in a circular queue?

Circular queues-Insertion and deletion operations in C++ Queue implements the FIFO mechanism i.e the element that is inserted first is also deleted first. Queue cane be one linear data structure. A circular queue is a type of queue in which the last position is connected to the first position to make a circle.

How insertion and deletion are performed on a circular queue?

Operations on Circular Queue enQueue(value): This function is used to insert the new value in the Queue. The new element is always inserted from the rear end. deQueue(): This function deletes an element from the Queue. The deletion in a Queue always takes place from the front end.

What are the operations of circular queue?

Operations On A Circular Queue

• Enqueue- adding an element in the queue if there is space in the queue.
• Dequeue- Removing elements from a queue if there are any elements in the queue.
• Front- get the first item from the queue.
• Rear- get the last item from the queue.
• isEmpty/isFull- checks if the queue is empty or full.

What are the steps for enqueue () and dequeue () in a circular queue?

1. Enqueue Operation. check if the queue is full. for the first element, set value of FRONT to 0. circularly increase the REAR index by 1 (i.e. if the rear reaches the end, next it would be at the start of the queue)
2. Dequeue Operation. check if the queue is empty. return the value pointed by FRONT.

How to use circular queue algorithm in data structure?

REAR := REAR + 1; c. QUEUE (REAR) := ITEM; d. COUNT := COUNT + 1; 3. Return; REMOVE-ITEM ( QUEUE, FRONT, REAR, COUNT, ITEM) This algorithm is used to remove or delete item from circular queue. 1. If ( COUNT = 0 ) then a. Display “Queue underflow”; b. Return; 2. Otherwise a.

How to remove an item from a circular queue?

REMOVE-ITEM ( QUEUE, FRONT, REAR, COUNT, ITEM) This algorithm is used to remove or delete item from circular queue. 1. If ( COUNT = 0 ) then a. Display “Queue underflow”; b. Return; 2. Otherwise a. ITEM := QUEUE (FRONT)l b. If ( FRONT =MAX ) then i. FRONT := 1; c. Otherwise i. FRONT := FRONT + 1; d. COUNT := COUNT + 1; 3. Return;

How to use circular queue insertion in javatpoint?

Circular Queue Algorithm Insertion of an element. STEP 1 START; STEP 2 Store the element to insert in linear data structure; STEP 3 Check if (front == 0 && rear == MAX-1) || (front == rear+1) then queue Overflow else goto step 4; STEP 4 Check if (front == -1) then front = 0; rear= 0; else goto step 5

How does the circular queue work on scanftree?

Circular queue follows FIFO principle. Queue items are added at the rear end and the items are deleted at front end of the circular queue. 1. If (FRONT == 1 and REAR == N) or (FRONT == REAR + 1) Then