A circular queue is a type of queue in which the last element is followed by the first element, forming a circle

In a circular queue, once an element is dequeued, the space becomes available for a new element.

A circular queue can be implemented using an array or a linked list.

In an array-based circular queue, a fixed-size array is used to store the elements, and two pointers are used to keep track of front and rear of the queue.

In a linked list-based circular queue, each node in the list contains a data element and a pointer to the next node.

Some common operations on a circular queue include enqueuing , dequeuing, and peek .

Circular queues are commonly used to store data that needs to be processed in a specific order, or to store data that will be used by multiple consumers.