LogIn
I don't have account.

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

Greedy Algorithms Explained: How They Work, When They Fail and How to Use Them
Learn greedy algorithms step by step with C# code Dijkstra, Huffman coding, knapsack and MSTs plus when greedy fails and how to prove it's correct
Amazon SDE II Interview Experience (Bangalore, Selected) ~ Aug 2026
Amazon SDE II interview experience from Bangalore covering 4 rounds, DSA, LLD, system design, Leadership Principles, coding questions and selection.
I Interviewed for a Microsoft SDE I Role. Here's Everything That Happened.
My real Microsoft SDE I interview experience, all 4 rounds, the exact DSA problems with fully tested solutions, the WhatsApp system design round
Adobe Computer Scientist 1 Interview Experience: Real Questions, Solutions & Tips
Real Adobe CS-1 interview experience covering C++, DSA questions, coding solutions, reschedules, rejection, interview challenges and preparation tips.
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.

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

Interview Experience
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.
Java
Java is a high-level object-oriented programming language. it's firstly released by Sun Microsystems in 1995. Use this tag when you're having queries using or understanding the language. This tag is also applicable to Java libraries and frameworks.
Interview Questions
Interview Questions are structured queries asked by employers to evaluate a candidate’s technical skills, problem-solving ability, experience, communication skills and cultural fit. These questions can include HR, behavioral, technical, coding and situational topics to assess whether the candidate is suitable for the job role and organization.
Database
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.
Software Design
Software design is the process of planning and structuring a software system’s architecture, components, interfaces, and data flow to meet functional and non-functional requirements. It ensures scalability, maintainability and performance. Key approaches include modular design, object-oriented design and architectural patterns like MVC and microservices for efficient, reliable software development.
Coding Problems
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.
AI
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.
Technical Interview
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.
Language-Concepts
This tag is used to understand a basic part of the language.
Math
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.
Popular Articles
How to Approach HR Interview Questions , What to Keep in Mind While Answering HR Interview Questions, HR Interview Questions and Answers
Mastering the Template Design Pattern in C#, Template Design Pattern in Depth: Structure, Use Cases and Best Practices
Find the Maximum Subarray Sum | Largest Sum Contiguous Subarray | Kadane’s Algorithm | Maximum Subarray | Given an integer array nums, find the subarray with the largest sum and return its sum | The Efficient Way to Find Maximum Subarray Sum
A Structured Approach to Cracking Technical Interviews. how to prepare for Technical Interviews? Technical Interviews preparation guideline
Amazon Transaction Logs (example question), Amazon Transaction Logs Interview question
Top High-Level Design(HLD) Interview Questions and answers, HLD QnA, HLD interview preparation
Learn how to create a primary key in SQL using syntax and examples. Ensure unique records, improve query performance and build table relationships.
namespace in c# | namspace concept in c# | c# namespace | c sharp namespace | what is namesapce and it's use cases | why should we use namespace
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.
Maximum Product Subarray, Find Maximum Product Subarray in an Array, Given an integer array arr, find a subarray that has the largest product,

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