Tutorials
Courses

Similar Topics

Web Technologies37.4K+ articles

Misc8.8K+ articles

Mathematical7.8K+ articles

Arrays6.5K+ articles

Competitive Programming3.3K+ articles

Strings3.3K+ articles

Greedy2.1K+ articles

Algorithms2.0K+ articles

Sorting1.8K+ articles

Searching1.7K+ articles

DSA / Data Structures

Data Structures

14.5K+ posts

Commonly Asked Data Structure Interview Questions on Linked List

Last Updated: 19 June 2025

Unlike arrays, which are stored in contiguous memory locations, linked lists consist of nodes, where each node contains data and a reference (or link) to the next node in ...read more

article_image

Commonly Asked Data Structure Interview Questions on Stack

Last Updated: 23 May 2025

A stack follows the Last In, First Out (LIFO) principle, meaning the last element added is the first to be removed. Stacks are a fundamental data structure used in many re...read more

Most Commonly Asked Data Structure Interview Questions on Queue

Last Updated: 04 March 2025

A Queue is a linear data structure that follows the First-In-First-Out (FIFO) principle. It is one of the most important and widely used data structures in computer scienc...read more

Commonly Asked Data Structure Interview Questions on Heap Data Structure

Last Updated: 19 June 2025

A heap is a complete binary tree that maintains a specific order, making it efficient for priority-based operations. It is mainly of two types:Min Heap: The smallest value...read more

Commonly Asked Data Structure Interview Questions on Hashing

Last Updated: 19 June 2025

Hashing is a technique to map data to fixed-size values using a hash function, often used for quick lookups, insertions, and deletions in applications like databases and c...read more

Commonly Asked Data Structure Interview Questions on Strings

Last Updated: 28 February 2025

Strings are essential data structures used to represent sequences of characters and are frequently encountered in coding interviews. Questions often focus on string manipu...read more

Data Structures

Commonly Asked Interview Questions on Tree

Last Updated: 19 June 2025

A tree is a hierarchical data structure consisting of nodes, with each node having a value and references (or pointers) to its child nodes. The tree structure is used to r...read more

Flipping Bits with K-Window

Last Updated: 02 March 2025

Given a binary array arr[] of size n, the task is to find minimum number of operations to convert all 0s to 1s. In one operation, we can select a subarray (window) of leng...read more

Commonly Asked Data Structure Interview Questions on Graph

Last Updated: 03 March 2025

A graph is a non-linear data structure that consists of a set of nodes (also known as vertices) connected by edges. Unlike trees, which have a hierarchical structure, grap...read more

Commonly Asked Data Structure Interview Questions on Bit Manipulation

Last Updated: 19 June 2025

Bit manipulation is a powerful technique often used in technical interviews to optimize space and time complexities by directly working with the binary representations of ...read more

Data Structures

Data Structures

Stack Implementation using Deque

Last Updated: 05 March 2025

A doubly ended queue or deque allows insertion and deletion at both ends. In a stack, we need to do insertions and deletions at one end only. We can use either end of dequ...read more

article_image

Commonly Asked Data Structure Interview Questions on Matrix

Last Updated: 19 June 2025

A Matrix can be considered as array of arrays or 2D array. We use matrix data structure to store two dimensional data.Top Coding Interview Questions on MatrixThe following...read more

article_image

Priority Queue Using Array

Last Updated: 07 March 2025

A priority queue is a data structure that stores elements with associated priorities. In a priority queue, elements are dequeued in order of their priority, with the highe...read more

article_image

Data Structures

Top Problems on Deque Data Structure asked in SDE Interviews

Last Updated: 16 March 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

Fill and Empty a Queue

Last Updated: 04 April 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

...