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DSA / Data Structures / Queue

Queue

225+ posts

Fill and Empty a Queue

Last Updated: 23 July 2025

Given an empty queue and an array of elements, we need to perform the following two operations.1. Filling a QueueFilling a queue refers to the process of adding array elem...read more

Data Structures

Deque Interview Questions for SDE Interviews

Last Updated: 22 September 2025

A Deque (Double-Ended Queue) is a flexible data structure that supports insertion and deletion from both ends in O(1) time. In SDE interviews, deques are frequently tested...read more

Most Commonly Asked Data Structure Interview Questions on Queue

Last Updated: 07 September 2025

Queues are a fundamental data structure in computer science, widely used for task scheduling, resource management, and handling requests in real-world systems. Queues1. Ho...read more

article_image

Enqueue in Queues in Python

Last Updated: 23 July 2025

A queue is a basic data structurethat follows the First-In-First-Out (FIFO) principle. At the back of the queue, elements are added (enqueued), and at the front, they are ...read more

Python Programs

Queue Data Structure

Last Updated: 23 July 2025

A Queue Data Structure is a fundamental concept in computer science used for storing and managing data in a specific order. It follows the principle of "First in, First ou...read more

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How to Iterate over a Queue in Java?

Last Updated: 23 July 2025

Queue is a concept of Linear Data Structure that follows the concept of FIFO(First In First Out). Queues are majorly used to maintain the order of the elements to which th...read more

Java-Collections

Java-Queue-Programs

Queue Notes for GATE Exam [2024]

Last Updated: 23 July 2025

A Queue is defined as a linear data structure that is open at both ends and the operations are performed in First In First Out (FIFO) order. Queue is a list in which all a...read more

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FIFO Principle of Queue

Last Updated: 23 July 2025

FIFO stands for "First In, First Out". This principle dictates that the first element added to the queue is the first one to be removed. Understanding the FIFO principle i...read more

Find the character which remains in the end

Last Updated: 23 July 2025

Given a string S containing only characters 'A' and 'B'. In one operation, one character can able to eliminate the other character which is at any position. This procedure...read more

What is Queue Data Structure?

Last Updated: 07 July 2023

What is Queue Data Structure?AQueueis defined as a linear data structure that is open at both ends and the operations are performed in First In First Out (FIFO) order.We d...read more

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Last when k numbers are Repeatedly Removed from both ends

Last Updated: 23 July 2025

There are n people from 1 to n are standing in the queue at a movie ticket counter. It is a weird ticket counter, as it distributes tickets to the first k people and then ...read more

Data Structures

Greedy Algorithms

two-pointer-algorithm

Queue Coding Questions for SDE Interviews

Last Updated: 21 September 2025

A Queue is defined as a linear data structure that is open at both ends and the operations are performed in First In First Out (FIFO) order. The element which is first pus...read more

top-dsa-problems

Find Kth Largest/Smallest element in a Queue

Last Updated: 23 July 2025

Given a queue of integers and an integer K, our task is to write a program that efficiently finds Kth largest/smallest element present in the queue. Return -1 if the numbe...read more

Data Structures-Queue

Find Largest element in a Queue

Last Updated: 23 July 2025

Given a queue of integers, the task is to write a program that efficiently finds the largest element in that queue. Return -1 if the queue is empty.Examples:Input:Queue = ...read more

Data Structures-Queue

Minimizing water collection distance in Geek's village

Last Updated: 23 July 2025

Geek's village is represented by a 2-D matrix of characters of size n*m, whereH - Represents a houseW - Represents a well. - Represents an open groundN - Prohibited area(N...read more

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