Applications of Circular Queues

Applications of Circular Queues 

 

Circular queue is actually a subtle modification of Linear Queue, specially with fixed length with better space handling. All the applications of Linear Queues are the application of Circular Queues. This is an article on the real life implementations as well as Computer science or Data structures applications of Circular Queues.

 
Applications of Circular Queues| PrepInsta
Applications of Circular Queue
Linear Queue image

Queue VS Circular Queue?

Let’s say, the queue is implemented using an array. So everytime you pop out one element, the front pointer in the array will be increasing by one. After popping out many products, the queue may be impossible to access for storage reasons, even if you don’t have any element in it.
 
That’s why at first the concept of Circular queue came in. In Circular queue, even if you change the front, after some time if the last pointer is accessed with the front pointer, after popping out again, the front pointer will again reach the first position.

 

Circular Queue image

Members of Circular Queue:

Here are the members and the functions or process that can be done in a Circular Queue.

  • Front : The first in the remaining order, from where you can delete nodes.
  • Back : Back or Rear, where nodes can be pushed, the last in the order.
  • Enqueue : Pushing a new element in the last or the back.
  • Dequeue : Popping out nodes from front, if the queue is mot empty.
  • Overflow / IsFull : If the Circular Queue has predefined storage and is full, no elements can be pushed.
  • Underflow / IsEmpty : If the Circular Queue is empty.
  • Size : Number of nodes present.

Members of Circular Queue:

Here are the members and the functions or process that can be done in a Circular Queue.

  • Space Complexity Reduction : Circular queue is more manageable than linear queue in terms of space complexity.
  • Computer Controlled Traffic System : Computer uses Circular queue to control the traffic system.
  • Process Scheduling : CPU uses Circular Queue or Queues to schedule processes.
  • Memory Management : Memory can be managed by a fixed length circular buffer, that is an application of Circular Queue.
  • Repetitions in Calendar : Days in Week, Sun-Mon-Tues or Months in year, Jan-Feb-Mar or repetitive situations like that can be implemented using Circular Queue, that comes in first in first out basis with a fixed length.
  • Circular Manufacturing Machines : Circular Machines like Bottle capping systems use fixed length Circular Queue.
 
 

There are various ways to create and utilise Circular Queue.  THe following are the articles to implement circular queue.

Article is contributed by Rahit Saha