Introduction A queue is an abstract Data type that inserts elements from the Rear end and removes them from the Front end. There are three types of queues: Simple Queue, Priority Queue, and Circular Queue. In this tutorial, we understand why we cannot wrap around a Priority queue and the reasons for it. Priority Queue It is a unique queue that is not based on the FIFO principle for Queue operations. What makes it unique? It is the priority of its elements for removing or deQueue. Each element of the priority queue has some priority and they are removed based ... Read More

Introduction In this tutorial, we will learn about the in-memory queue in the data structure. A queue is a general data structure that inserts and removes elements with some pattern. It uses the First In First Out approach for its processing. An array and linked lists are used to implement a queue. In-Memory Queue A queue can be visualized as a continuous memory (using an array queue) for storing data types. It is stored in secondary memory. In-memory Queue is different from a simple queue only in terms of its storage area. It is stored in the RAM of your ... Read More

Introduction A queue is a linear data structure that follows the FIFO principle for inserting and removing elements and has no close ending. It is functional on both ends. In this tutorial, we will learn how to turn a queue into a priority Queue and understand the meaning of queue and priority queue in the data structure. What is Queue? Queue in data structure resembles the queue in real life and is used to handle multiple data. It is an ordered list in which elements are entered on the rear end and removed from the front end. In this, the ... Read More

Introduction Queue is a linear data structure that uses the FIFO approach for inserting and removing its elements. It can be implemented by using arrays and linked lists. In this tutorial, we will analyze the time and space complexity of array based queue for its different operation. Queue Implementation Using Array The principle of Queue is its FIFO approach and it states that the element that enters first in the Queue will be the first to be removed from it. Its elements are inserted at the Rear end. Queue elements are removed from the Front end. The real-life example of ... Read More

Introduction Both Queue and Stack are linear data structures and are used to store data. Stack uses the LIFO principle to insert and delete its elements. A Queue uses the FIFO principle. In this tutorial, we will learn how to reverse a stack using Queue. Reversing means the last element of the Stack comes to first place and so on. What is Stack? The stack in the data structure is inspired by the stack in real life. It uses LIFO (Last In First Out) logic, which means the element that enters last in the Stack will be removed first. In ... Read More

Introduction The Priority Queue in C++ is not similar to the normal Queue in the data structure, it has one difference: all its elements have priorities. We can extract its elements by traversing in the Queue. But, here in this tutorial, we are trying a method for extracting the last element of the Priority Queue without traversing. Let’s start… What is Priority Queue? In data structure, the abstract data type is the priority queue. It is a queue where all its elements have some associated priorities. All its elements are removed based on their priorities. Higher priority data are ... Read More

The queue is a linear data structure that inserts elements from the back and removes elements from the starting end of the queue. A priority queue is an extended version of the normal queue with priorities for each element. In this tutorial, we learn about the queue and priority queue in Java with individual implementation. Difference between Priority Queue and Queue in Java Area Priority Queue Queue Definition A priority queue is the queue in which each of its elements has some priorities. The elements from the queue are removed based on their priorities. Queue is ... Read More

Queue in Java is a linear data structure with various functions. A Queue has two endpoints and it follows the First-In-First-Out (FIFO)principle to insert and remove its elements. In this tutorial, we will look at two important functions of the queue in Java and they are add() and offer(). What is Queue? A queue in java is an interface that extends the util and collection packages. The elements are inserted at the Rear end and removed from the Front end. A queue in java can be implemented by using the classes of linked list, DeQueue, and priority queue. A priority ... Read More

Primarily, there are two types of data types − Primitive and Non-primitive. Primitive data types are predefined types of data, which are supported by the programming language. Non-primitive data types are not defined by the programming language, but are instead created by the programmer. With this brief introduction to data types, let's start this article and differentiate Stack and Queue data structures. Both Stack and Queue are types of data structures to store data in a particular order. A stack data structure is a type of linear list which allows the insertion or deletion of an element ... Read More