Application of Queue in Data Structure

Application of Queue in Data Structure belong to many real world situation. As we know that queue is a First in First Out Data Structure. Here in this tutorial we are going to discuss various applications of queue in data structure.

A data structure is a way of storing, maintaining or organizing the data.

Queue is a linear data structure. Queue is an abstract data structure. Queue is an ordered list which follows First in First out (FIFO) principle.

In queue it has two open ends.

Insertion of data is done at one end which is called Rear/Tail end.

Deletion of data is done at another end which is called Head/Front end.

Also Read – Operations on Data Structure

Various Application of Queue  in Data Structure are as follow –

1. Job Scheduling

The jobs that are to be executed by the computer is scheduled to be executed one by one. There are many jobs like keyboard press, mouse click etc. in the system.

These jobs are brought in the main memory. These jobs are assigned to the processor one by one which is organized using a queue.

e.g. First In First Out and Round Robin processor scheduling in queues.

2. Multiprogramming

If there are multiple programs in the main memory, then it is called multiprogramming. The various programs in the main memory are organized as queues and the queues formed are called ‘Ready Queue’.

The processors will execute the programs by accessing them from the cache memory. This is done for their simultaneous execution.

3. For Operation on Data Structure

Certain operations like ‘tree traversal’ and ‘Breadth first search uses queue for graph traversal’ involve the use of queues. These are some non-linear data structures. The sequence of traversal of inputs is set using queues.

4. Access to Shared Resources

In a networked system, the service is asked from a single resource simultaneously by various workstations or machines. The requests are generated in fractions of second, which is very fast.

Although there’s always some time difference in the requests generated. This situation is maintained by implementing a queue in the device at the server.

Also Read – Operating System Notes or Operating System Tutorial for GATE

5. Multilevel Queue Scheduling

Here, the jobs are allocated and divided into multiple queues. Every process is assigned a unique priority based on which the system executes the processes.

This system has one limitation which is the lower priority processes may be pre-empted by a higher priority process.

6. As a Buffer Space

It is used in network, during transmission of data from source machine to destination.

7. Queue can also be used in simulation.

8. In Computer Networks queue application are in Routers and in Mail queue.

9. Queues application are also in the field of Handling website Traffic.

10. Applications of queue are also in maintaining the playlist in media player.

Conclusion and Summary

In this Tutorial we have discussed the applications of queue in data structure. I hope after reading this tutorial students can easily answer the questions related to applications of queue in data structure.