Queues are a fundamental data structure in computer science, used to manage data in a sequential order following the First-In-First-Out (FIFO) principle. There are several types of queues, each designed for specific applications and operations:
Simple Queue or Linear Queue: This is the most basic form of a queue which strictly follows the FIFO order. Elements are added at the rear and removed from the front. Simple queues are often used in scenarios like handling requests on a single resource, such as a printer or a CPU task scheduling[1][2].
Circular Queue: Enhancing the utilization of memory in simple queues, circular queues connect the end of the storage back to the front, forming a circle. This setup is useful in situations where the queue needs to be reused frequently, such as buffering data streams or managing the round-robin scheduling in operating systems[1][2].
Priority Queue: In a priority queue, elements are ordered based on their priority instead of just their insertion order. This allows elements with higher priority to be processed before those with lower priority, regardless of their order of arrival. Priority queues are essential in scenarios like emergency services dispa...
