HashSet

A HashSet is a collection that stores unique elements and uses hashing for fast lookups, insertions and deletions. It does not maintain element order and allows null values (in some languages). Ideal for removing duplicates and quick membership tests, HashSet offers average O(1) time complexity for basic operations.

Popular Topics

Interview

A structured conversation where one participant asks questions and the other provides answers of those questions.

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.

Coding Problems

Practice Coding Problems to boost your skill.

MySQL

MySQL is an open-source relational database management system

git branch

git branch is a command used to manage branches

Sorting

Sorting Algorithms are designed to arrange element in accending or decending order.

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.

SQL

SQL stands for Structured query language. It is a programming language for storing and processing information in a relational database. It is standard language for accessing and manipulating databases.

Loop

Loop are a type of control flow structure in programming in which a series of statements may be executed repeatedly until some condition is met.

Control Flow

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