What is Queue in Data Structures?

What is Queue in Data Structures?

A queue is a linear data structure that follows the First-In-First-Out (FIFO) principle. It operates like a line where elements are added at one end (rear) and removed from the other end (front)....

Basic Operations of Queue Data Structure

Enqueue (Insert): Adds an element to the rear of the queue. Dequeue (Delete): Removes and returns the element from the front of the queue. Peek: Returns the element at the front of the queue without removing it. Empty: Checks if the queue is empty. Full: Checks if the queue is full....

Applications of Queue

Task scheduling in operating systems Data transfer in network communication Simulation of real-world systems (e.g., waiting lines) Priority queues for event processing queues for event processing...

Implementation of Queues

Queues can be implemented using Two techniques:...

Basics of Queue Data Structure

Introduction to Queue – Data Structure and Algorithm Tutorials Basic Operations of Queue Data Structure Different Types of Queue Applications, Advantages and Disadvantages of Queue...

Implementations of Queue in various Programming Languages

Queue in C++ Standard Template Library (STL) Queue Interface In Java Queue In Python Queue In C# Queue in Javascript...

Other Implementations of Queue Data Structure

Implementation of Deque using doubly linked list Implement a stack using single queue Implement Queue using Stacks How to efficiently implement k Queues in a single array? LRU Cache Implementation...

Easy Problems on Queue Data Structure

Implement Stack using Queues Detect cycle in an undirected graph using BFS Breadth First Search or BFS for a Graph Traversing directory in Java using BFS Vertical order traversal of Binary Tree using Map Print Right View of a Binary Tree Find Minimum Depth of a Binary Tree Check whether a given graph is Bipartite or not...

Medium Problems on Queue Data Structure

Flatten a multilevel linked list Level with maximum number of nodes Find if there is a path between two vertices in a directed graph Print all nodes between two given levels in Binary Tree Find next right node of a given key Minimum steps to reach target by a Knight Islands in a graph using BFS Level order traversal line by line | Set 3 (Using One Queue) Find the first non-repeating character from a stream of characters...

Hard Problems on Queue Data Structure

Sliding Window Maximum (Maximum of all subarrays of size K) Flood Fill Algorithm Minimum time required to rot all oranges Shortest path in a Binary Maze An Interesting Method to Generate Binary Numbers from 1 to n Maximum cost path from source node to destination Shortest distance between two cells in a matrix or grid Snake and Ladder Problem Find shortest safe route in a path with landmines Count all possible walks from a source to a destination with exactly K edges Minimum Cost of Simple Path between two nodes in a directed and weighted graph Minimum Cost Path in a directed graph via given set of intermediate nodes Find the first circular tour that visits all petrol pumps...