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hello-algo

Developed by krahets

Hello Algo is a free, open-source, beginner-friendly tutorial on data structures and algorithms. It explains concepts through animated diagrams for a smooth learning curve, and provides one-click runnable source code in 12+ programming languages including Python, Java, C++, C, C#, JavaScript, Go, Swift, Rust, Ruby, Kotlin, TypeScript and Dart. Readers learn algorithm principles and underlying data structure implementations through hands-on practice. The project supports community discussion, multi-language translation, and offers an online web edition plus PDF/EPUB downloads.

  • Animated diagram explanations
  • One-click runnable code
  • 12+ programming languages
  • Free and open source
  • Community-driven learning
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