DSA
DSA (Data Structures and Algorithms) is a fundamental concept in computer science that focuses on efficiently storing, organizing and processing data. Data structures like arrays, linked lists, stacks and trees manage data, while algorithms provide step-by-step solutions to problems. Mastering DSA is essential for writing optimized, scalable and high-performance code.
Top DSA Blogs
How to Find the Right View of a Binary Tree
Learn how to find the right view of a binary tree using DFS and BFS, with examples, code, complexity analysis and coding interview tips.
Left View of a Binary Tree: DFS and BFS Approaches Explained
Learn how to find the left view of a binary tree using DFS and BFS, with examples, code, complexity analysis, common mistakes and interview tips.
Top View of a Binary Tree Using BFS and DFS | Complete Guide
Learn how to find the top view of a binary tree using DFS and BFS with step-by-step explanations, examples, code, complexity analysis and interview insights.
Bottom View of a Binary Tree: DFS vs BFS Approach
Learn to find the bottom view of a binary tree using horizontal distance. Compares a buggy DFS attempt, a fixed DFS and the optimal BFS solution in Java.
Longest Playlist With No Repeated Songs : Brute Force to Optimal
Find the longest playlist with no repeated songs using brute force, HashSet, and HashMap sliding window techniques, with Java code and dry runs.
My Adobe SDE Interview Experience (Aug 2026) 5 Rounds, Selected
Real Adobe SDE interview: 5 rounds, 4 DSA problems (Rotate Array, BSTs, Kth Smallest Matrix), code review & behavioral round. Full solutions + tips.
Binary Search Explained: A Beginner's Guide With Real Examples
Learn Binary Search from scratch with easy words, real-life examples, and 7 different types of Binary Search questions with Java code, complexity.
DFS vs BFS: Graph Traversal Explained with Examples
Learn DFS and BFS from scratch with Java examples, graph traversal, shortest paths, cycle detection, complexity, patterns,and interview questions.
Backtracking for Beginners: The Complete Guide from Basics to Advanced Patterns
Learn backtracking from scratch with patterns, Java examples, interview tips, recursion templates, pruning techniques and common mistakes
My Oracle Interview Experience (July 2026) : Round 1 (Senior Platform Engineer)
Read my Oracle Senior Platform Engineer Round 1 interview experience covering a Sliding Window array problem, SQL question, interviewer hints, mistakes, and sol
Top DSA Articles
What is Two Pointer Approach?
The two-pointer technique is a foundational pattern for solving array, string, and linked-list problems in linear (or near-linear) time with constant extra space
Amazon Transaction Logs
Amazon Transaction Logs (example question), Amazon Transaction Logs Interview question
2 Sum - Pair Sum Closest to 0
2 Sum - Pair Sum Closest to 0 , Sum of two elements whose sum is closest to zero , array DSA problem, coding problem , DSA coding problem , DSA interview coding problem
2 Sum – Count Pairs with given Sum in Sorted Array
2 Sum – Count Pairs with given Sum in Sorted Array, two sum , Count pairs with given sum , 2 sum problem , array DSA problem, coding problem , DSA interview coding problem
2 Sum Count pairs with given sum
2 Sum – Count pairs with given sum, two sum , Count pairs with given sum , 2 sum problem , array DSA problem, coding problem , DSA interview coding problem
Two Sum - Pair with given Sum
Two Sum – Pair with given Sum , 2 sum problem , array DSA problem, coding problem , DSA coding problem , DSA interview coding problem
Container With Most Water
Container With Most Water | You are given an integer array height of length n. There are n vertical lines drawn such that the two endpoints of the ith line are (i, 0) and (i, height[i]). Find two lines that together with the x-axis form a container such that the container contains the most water.
Maximum Product of Three Numbers
Maximum product of a triplet (subsequence of size 3) in array | Maximum Product of Three Numbers | Given an integer array arr, find three numbers whose product is maximum and return the maximum product.
3 Sum : Find triplets that add up to a target value
3 Sum : Find triplets that add up to a target value, 3 sum problem , Triplet Sum in Array , Given an integer array nums, return all the triplets that add up to a target value
Maximum Product Subarray
Maximum Product Subarray, Find Maximum Product Subarray in an Array, Given an integer array arr, find a subarray that has the largest product,
Popular Topics
MathInterviewInterview ExperienceAICoding ProblemsTechnical InterviewDistributed SystemDatabaseArrayLanguage-Concepts
math tag that is used for mathematical operations Math is the study of numbers, shapes, patterns and logical relationships. It provides tools for problem-solving, measurement and analysis across science, technology, engineering and daily life. Math includes fields like algebra, geometry, calculus and statistics. It builds critical thinking skills and forms the foundation for computing, algorithms, data science and modern technological advancements.
A structured conversation where one participant asks questions and the other provides answers of those questions.
An interview experience is a detailed account of the interview process for a specific role, covering rounds, questions asked, difficulty level, preparation tips and personal insights to help future candidates understand what to expect and how to prepare effectively.
Artificial Intelligence (AI) is the simulation of human intelligence in machines, enabling them to think, learn and make decisions. It powers systems to solve problems, recognize patterns, understand language and adapt over time. AI is used in various fields, including robotics, healthcare, finance and everyday applications like virtual assistants.
Coding problems are exercises designed to test a programmer’s ability to write logic, solve challenges and apply algorithms or data structures. They help improve problem-solving skills, logical thinking and coding efficiency. Common in interviews and competitive programming, coding problems range from simple tasks to complex algorithmic challenges, preparing developers for real-world software development scenarios.
Technical Interview is a structured assessment where employers evaluate a candidate’s technical skills, problem-solving ability and practical knowledge related to a specific role. It typically includes coding challenges, system design questions, debugging tasks and discussions about past projects. The goal of a technical interview is to measure how effectively a candidate can apply their technical expertise to solve real-world problems.
A distributed system is a network of independent computers that work together to achieve a common goal. These systems share resources, process tasks in parallel and ensure fault tolerance. Used in cloud computing, databases and large-scale applications. They improve scalability, reliability and performance by distributing workloads across multiple nodes efficiently.
A database is an organized collection of data. It is the collection of schemas, tables, queries, reports, views, and other objects. The data are typically organized to model aspects of reality in a way that supports processes requiring information. Use this tag if you have questions about designing a database.
An array is a linear data structure that stores multiple elements of the same type in contiguous memory locations. It allows fast access using index positions, making operations like retrieval efficient. Arrays are widely used for organizing data, implementing algorithms and building other data structures. However, their size is fixed, making resizing difficult compared to dynamic collections.
This tag is used to understand a basic part of the language.
Popular Articles
Rotate an array of n elements to the right by k steps | right rotate the elements of an array | array rotate | rotate array by k step
Length of the Longest Substring Without Repeating Characters | Given a string str find the length of the longest substring without repeating characters | find the length of the longest substring without repeating characters in a given string |
how to install docker on amazon ec2 instance. docker installation command on linux machine, docker commands, Commonly Used Docker Commands on EC2
Mastering the Template Design Pattern in C#, Template Design Pattern in Depth: Structure, Use Cases and Best Practices
How to Approach HR Interview Questions , What to Keep in Mind While Answering HR Interview Questions, HR Interview Questions and Answers
Top High-Level Design(HLD) Interview Questions and answers, HLD QnA, HLD interview preparation
Amazon Transaction Logs (example question), Amazon Transaction Logs Interview question
List Handling in Java vs C# vs C++ A Deep Comparison, This comparison provides a full view java , c# and c++ List like data structures
install mysql by docker. docker mysql server installation. MySQL is one of the most popular open-source relational database management systems. Docker container is a great way to manage and deploy databases in a portable and isolated environment. In this article, we will walk through the steps by step to install and run MySQL in Docker.
Most Popular Tools
Explore our top online tools including a blank page for notes, a QR code generator, word counter and collaborative editor. These free, easy-to-use utilities help you write, analyze, share and organize content faster. Perfect for developers, creators and students to streamline everyday digital tasks efficiently.
Blank Page
Create a blank canvas for your ideas, notes or sketches. Use this tool for rough work and jotting down your thoughts
QR Code Generator
A QR Code Generator is a tool that instantly converts text, URLs or other data into a scannable QR code. Users can create custom QR codes for websites, contact info or messages. It's commonly used for quick access, sharing and printing without needing a backend or complex setup.
Word Counter
Perform various string operations like counting characters, words or letters.
Collaborative Editor
Collab Editor is a powerful, free-to-use online platform that lets you collaborate in real-time. Whether you re working on documents, brainstorming idea, or discussing projects etc