![]() # Remove a item from the back of the deque # Remove a item from the front of the deque # Add a new item to the back of the deque # Add a new item to the front of the deque It allows you to add and remove elements from the front and back of the queue in constant time, making it an efficient data structure for many applications. A simple queue inserts elements at the rear end and removes them from the front end of the queue.ĭevelopers commonly use simple queues in scenarios where they need to maintain the order of elements, such as in job scheduling, message passing, or network processing.īelow is an example of a Simple Queue in Python:Ī double-ended queue also called deque is a data structure that allows the insertion and deletion of elements from both ends of the queue. 2.1 Simple QueuesĪ Simple Queue, also known as a FIFO Queue, is a linear data structure that follows the FIFO principle. We will discuss Simple Queues, Double-ended Queues, Circular Queues, and Priority Queue. ![]() There are multiple types of queues in Python, each with unique characteristics and use cases. Front and rear pointers keep track of the first and last elements in the queue.Removing an element from an empty queue results in an underflow error.Adding an element to a full queue results in an overflow error.Size is determined by the number of elements it can hold.Has a size, front and rear pointers, and can be empty or full.Follows the First In First Out (FIFO) principle.1.1 Characteristics of a queueīelow are some characteristics of a queue in Python: Typically, they implement them as a simple linear data structure, where they add elements to the back of the queue and remove them from the front of the queue. Programmers often use queues to manage various types of data, such as events, messages, or tasks. We store the elements in such a way to ensure this behavior. The first element added to the queue is the first element to be removed from the queue, known as the First In First Out (FIFO) principle. A queue is a data structure in Python that allows the ordered processing of data.
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