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<p align="center">
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<a href="https://www.hello-algo.com/en/">
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<img src="https://www.hello-algo.com/en/index.assets/hello_algo_header.png" width="450"></a>
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</p>
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<p align="center">
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<img style="height: 60px;" src="https://readme-typing-svg.demolab.com?font=Noto+Sans+SC&weight=500&duration=3500&pause=2000&color=21C8B8¢er=true&vCenter=true&random=false&width=200&lines=Hello%2C+Algo+!" alt="hello-algo-typing-svg" />
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</br>
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Data structures and algorithms crash course with animated illustrations and off-the-shelf code
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</p>
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<p align="center">
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<a href="https://www.hello-algo.com/en/">
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<img src="https://www.hello-algo.com/en/index.assets/btn_read_online_dark.svg" width="120"></a>
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</p>
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<p align="center">
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<img src="https://www.hello-algo.com/index.assets/animation.gif" width="395">
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<img src="https://www.hello-algo.com/index.assets/running_code.gif" width="395">
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</p>
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<p align="center">
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<img src="https://img.shields.io/badge/Python-snow?logo=python&logoColor=3776AB" alt="" />
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<img src="https://img.shields.io/badge/Java-snow?logo=coffeescript&logoColor=FC4C02" alt="" />
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<img src="https://img.shields.io/badge/C%2B%2B-snow?logo=c%2B%2B&logoColor=00599C" alt="" />
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<img src="https://img.shields.io/badge/C-snow?logo=c&logoColor=A8B9CC" alt="" />
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<img src="https://img.shields.io/badge/C%23-snow?logo=csharp&logoColor=512BD4" alt="" />
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<img src="https://img.shields.io/badge/JavaScript-snow?logo=javascript&logoColor=E9CE30" alt="" />
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<img src="https://img.shields.io/badge/Go-snow?logo=go&logoColor=00ADD8" alt="" />
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<img src="https://img.shields.io/badge/Swift-snow?logo=swift&logoColor=F05138" alt="" />
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<img src="https://img.shields.io/badge/Rust-snow?logo=rust&logoColor=000000" alt="" />
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<img src="https://img.shields.io/badge/Ruby-snow?logo=ruby&logoColor=CC342D" alt="" />
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<img src="https://img.shields.io/badge/Kotlin-snow?logo=kotlin&logoColor=7F52FF" alt="" />
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<img src="https://img.shields.io/badge/TypeScript-snow?logo=typescript&logoColor=3178C6" alt="" />
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<img src="https://img.shields.io/badge/Dart-snow?logo=dart&logoColor=0175C2" alt="" />
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</p>
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<p align="center">
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<a href="https://github.com/krahets/hello-algo">简体中文</a>
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｜
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<a href="https://github.com/krahets/hello-algo/blob/main/zh-hant/README.md">繁體中文</a>
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｜
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English
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</p>
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## About
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This open-source project aims to create a free and beginner-friendly crash course for data structures and algorithms.
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- Animated illustrations, easy-to-understand content, and a smooth learning curve help beginners explore the "knowledge map" of data structures and algorithms.
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- Run code with just one click, helping readers improve their programming skills and understand the working principle of algorithms and the underlying implementation of data structures.
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- Promoting learning by teaching, feel free to ask questions and share insights. Let's grow together through discussion.
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If you find this book helpful, please give it a Star :star: to support us, thank you!
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## Endorsements
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> "An easy-to-understand book on data structures and algorithms, which guides readers to learn by minds-on and hands-on. Strongly recommended for algorithm beginners!"
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>
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> **—— Junhui Deng, Professor, Department of computer science and technology, Tsinghua University**
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> "If I had 'Hello Algo' when I was learning data structures and algorithms, it would have been 10 times easier!"
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>
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> **—— Mu Li, Senior Principal Scientist, Amazon**
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## Contributing
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> [!Important]
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>
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> Welcome to contribute to Chinese-to-English translation! For more information please see [CONTRIBUTING.md](CONTRIBUTING.md).
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This open-source book is continuously being updated, and we welcome your participation in this project to provide better learning content for readers.
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- [Content Correction](https://www.hello-algo.com/en/chapter_appendix/contribution/): Please help us correct or point out mistakes in the comments section such as grammatical errors, missing content, ambiguities, invalid links, or code bugs.
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- [Code Transpilation](https://github.com/krahets/hello-algo/issues/15): We look forward to your contributions in various programming languages. We currently support 12 languages including Python, Java, C++, Go, and JavaScript.
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We welcome your valuable suggestions and feedback. If you have any questions, please submit Issues or reach out via WeChat: `krahets-jyd`.
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We would like to dedicate our thanks to all the contributors of this book. It is their selfless dedication that has made this book better. They are:
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<p align="left">
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<a href="https://github.com/krahets/hello-algo/graphs/contributors">
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<img width="770" src="https://contrib.rocks/image?repo=krahets/hello-algo&max=300&columns=16" />
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</a>
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</p>
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## License
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The texts, code, images, photos, and videos in this repository are licensed under [CC BY-NC-SA 4.0](https://creativecommons.org/licenses/by-nc-sa/4.0/).
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