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Difference Between Linear Queue and Circular Queue

  • Last Updated : 06 Jan, 2021
Geek Week

Linear Queue: A Linear Queue is generally referred to as Queue. It is a linear data structure that follows the FIFO (First In First Out) order. A real-life example of a queue is any queue of customers waiting to buy a product from a shop where the customer that came first is served first. In Queue all deletions (dequeue) are made at the front and all insertions (enqueue) are made at the rear end.

Circular Queue: Circular Queue is just a variation of the linear queue in which front and rear-end are connected to each other to optimize the space wastage of the Linear queue and make it efficient.

Tabular difference between linear and circular queue:

S.no.Linear QueueCircular Queue
1.Arranges the data in a linear pattern.Arranges the data in a circular order where the rear end is connected with the front end.
2.The insertion and deletion operations are fixed i.e, done at the rear and front end respectively.Insertion and deletion are not fixed and it can be done in any position.
3.Linear queue requires more memory space.It requires less memory space.
4.In the case of a linear queue, the element added in the first position is going to be deleted in the first position.  The order of operations performed on any element is fixed i.e, FIFO.In the case of circular queue, the order of operations performed on an element may change.
5.It is inefficient in comparison to a circular queue.It is more efficient in comparison to linear queue.

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