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Category Archives: Queue

The Task is to extract the last element of the priority queue without traversing it. Approach: This problem can be solved using a Double-ended priority… Read More
What is a circular Queue? A circular queue is a non-primitive, linear data structure. It is an extended version of a linear queue. It is… Read More
Queue: Queue is an Interface that extends the collection Interface in Java and this interface belongs to java.util package.  A queue is a type of… Read More
Add() and Offer() are the methods used for adding the elements in the Queue. But both have their main function and they treat the elements… Read More
What is Queue? Queue is an abstract data type that is open at both ends. One end is always used to insert data (enqueue) which… Read More
Given an array nums[] of size N and a starting index K. In one move from index i we can move to any other index… Read More
Java Queue Interface The Java.util package has the interface Queue, which extends the Collection interface. It is employed to preserve the components that are handled… Read More
Queues: A queue is a linear data structure in which elements are inserted from one end called the rear end and deleted from another end… Read More
A queue is a linear data structure in which insertion is done from one end called the rear end and deletion is done from another… Read More
What is Dijkstra’s Algorithm? Dijkstra’s Algorithm is used for finding the shortest path between any two vertices of a graph. It uses a priority queue… Read More
Priority Queue: A priority queue is a special type of queue in which each element is assigned a priority value. And elements are served based… Read More
What is Queue? Queue is a linear data structure that follows FIFO approach (First In First Out). One can imagine a queue as a line… Read More
ArrayDeque in Java The ArrayDeque in Java provides a way to apply resizable-array in addition to the implementation of the Deque interface. It is also… Read More
What is an in-memory Queue? An in-memory queue is a queue that stores data in memory. In-memory queues are used to improve application performance by… Read More
Queue: The queue is an abstract data type or linear data structure from which elements can be inserted at the rear(back) of the queue and… Read More