Cheatsheets

A fast, practical Python reference for DSA and competitive programming.

A comprehensive beginner-to-advanced guide to the R programming language, tailored for data science, statistical workflows, and modern visualization.

An interactive production reference for Bootstrap 5 grid layouts, responsive breakpoints, component states, and utilities.

A fast, practical C reference for DSA, competitive programming, and systems.

A fast, practical Java reference for DSA and competitive programming.

A fast, production-ready Kotlin reference optimized for DSA, LeetCode, and competitive programming.

Complete quick reference for Node.js - Core modules, npm, async patterns, and best practices.

Complete quick reference for modern React - Hooks, Components, Patterns, and Best Practices.

A fast, practical C++ reference for DSA and competitive programming.

A fast, practical C# reference for DSA, competitive programming, and interviews.

A fast, practical JavaScript reference for DSA and competitive programming.

A fast, practical SQL reference for interviews, DBMS, and backend development.

A fast, practical TypeScript reference for DSA and competitive programming.

A concise Go (Golang) cheatsheet covering syntax, data types, slices, maps, structs, pointers, and DSA-relevant patterns for interview preparation.