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初识算法
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复杂度
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数组与链表
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栈与队列
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哈希表
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树
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堆
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图
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排序
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回溯
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动态规划
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贪心
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动画图解、一键运行的数据结构与算法教程
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代码仓库
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< section class = "home-div" data-md-color-scheme = "slate" >
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< img alt = "Preview" src = "index.assets/hello_algo_header.png" style = "width: 100%; max-width: 39em;" / >
< div class = "code-badge" >
< img alt = "" src = "https://img.shields.io/badge/Python-snow?logo=python&logoColor=3776AB" / >
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< p style = "margin-top: 2em;" >
500 幅动画图解、12 种编程语言代码、3000 条社区问答，助你快速入门数据结构与算法
< / p >
< / div >
< / section >
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< div class = "reading-media" >
< div class = "media-block" >
< a href = "/chapter_paperbook/" >
< div style = "height: 8.17%;" >
< / div >
< img alt = "Cover" class = "device-on-hover" src = "assets/hero/cover_render.png" style = "height: 66.83%;" / >
< div class = "text-button" >
< span >
获取纸质书
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在线阅读
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< a href = "https://github.com/krahets/hello-algo/releases" >
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< span >
下载 PDF
< / span >
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推荐语
< / h3 >
< div class = "intro-container" style = "margin: 0 auto;" >
< div class = "intro-text endor-text" >
< p style = "margin-bottom: 0;" >
“一本通俗易懂的数据结构与算法入门书，引导读者手脑并用地学习，强烈推荐算法初学者阅读。”
< / p >
< p style = "font-weight: bold;" >
—— 邓俊辉，清华大学计算机系教授
< / p >
< / div >
< div class = "intro-text endor-text" >
< p style = "margin-bottom: 0;" >
“如果我当年学数据结构与算法的时候有《Hello 算法》，学起来应该会简单 10 倍！”
< / p >
< p style = "font-weight: bold;" >
—— 李沐，亚马逊资深首席科学家
< / p >
< / div >
< / div >
< / div >
< / section >
< section class = "home-div" data-md-color-primary = "white" data-md-color-scheme = "default" >
< div class = "section-content" >
< div class = "intro-container" >
< div class = "intro-text" >
< div >
< div style = "display: flex; align-items: center;" >
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动画图解
< / h3 >
< / div >
< p style = "margin: 0;" >
内容清晰易懂，学习曲线平滑
< / p >
< p class = "intro-quote" >
"A picture is worth a thousand words."
< br / >
“一图胜千言”
< / p >
< / div >
< / div >
< img alt = "Animation example" class = "intro-image" src = "index.assets/animation.gif" / >
< / div >
< div class = "intro-container" >
< img alt = "Running code example" class = "intro-image" src = "index.assets/running_code.gif" / >
< div class = "intro-text" >
< div >
< div style = "display: flex; align-items: center;" >
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一键运行
< / h3 >
< / div >
< p style = "margin: 0;" >
十余种编程语言，代码可视化运行
< / p >
< p class = "intro-quote" >
"Talk is cheap. Show me the code."
< br / >
“少吹牛，看代码”
< / p >
< / div >
< / div >
< / div >
< div class = "intro-container" >
< div class = "intro-text" >
< div >
< div style = "display: flex; align-items: center;" >
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互助学习
< / h3 >
< / div >
< p style = "margin: 0;" >
欢迎讨论与提问，读者间携手共进
< / p >
< p class = "intro-quote" >
"Learning by teaching."
< br / >
“教学相长”
< / p >
< / div >
< / div >
< img alt = "Comments example" class = "intro-image" src = "index.assets/comment.gif" / >
< / div >
< / div >
< / section >
< section class = "home-div" data-md-color-primary = "grey" data-md-color-scheme = "slate" >
< div class = "section-content" style = "max-width: 90vw;" >
< div style = "margin: 2em auto;" >
< h3 >
作者
< / h3 >
< div class = "profile-div" >
< div class = "profile-cell" >
< a href = "https://github.com/krahets" >
< img alt = "Author: yudongjin" class = "profile-img" src = "assets/avatar/avatar_yudongjin.jpg" / >
< br / >
< b >
靳宇栋（@krahets）
< / b >
< / a >
< / div >
< / div >
< / div >
< div style = "margin: 2em auto;" >
< h3 >
代码审阅者
< / h3 >
< div class = "profile-div" >
< div class = "profile-cell" >
< a href = "https://github.com/codingonion" >
< img alt = "Reviewer: codingonion" class = "profile-img" src = "assets/avatar/avatar_codingonion.jpg" / >
< br / >
< b >
codingonion
< / b >
< br / >
< sub >
Zig, Rust
< / sub >
< / a >
< / div >
< div class = "profile-cell" >
< a href = "https://github.com/Gonglja" >
< img alt = "Reviewer: Gonglja" class = "profile-img" src = "assets/avatar/avatar_Gonglja.jpg" / >
< br / >
< b >
Gonglja
< / b >
< br / >
< sub >
C, C++
< / sub >
< / a >
< / div >
< div class = "profile-cell" >
< a href = "https://github.com/gvenusleo" >
< img alt = "Reviewer: gvenusleo" class = "profile-img" src = "assets/avatar/avatar_gvenusleo.jpg" / >
< br / >
< b >
gvenusleo
< / b >
< br / >
< sub >
Dart
< / sub >
< / a >
< / div >
< div class = "profile-cell" >
< a href = "https://github.com/hpstory" >
< img alt = "Reviewer: hpstory" class = "profile-img" src = "assets/avatar/avatar_hpstory.jpg" / >
< br / >
< b >
hpstory
< / b >
< br / >
< sub >
C#
< / sub >
< / a >
< / div >
< div class = "profile-cell" >
< a href = "https://github.com/justin-tse" >
< img alt = "Reviewer: justin-tse" class = "profile-img" src = "assets/avatar/avatar_justin-tse.jpg" / >
< br / >
< b >
justin-tse
< / b >
< br / >
< sub >
JS, TS
< / sub >
< / a >
< / div >
< div class = "profile-cell" >
< a href = "https://github.com/krahets" >
< img alt = "Reviewer: krahets" class = "profile-img" src = "assets/avatar/avatar_krahets.jpg" / >
< br / >
< b >
krahets
< / b >
< br / >
< sub >
Python, Java
< / sub >
< / a >
< / div >
< div class = "profile-cell" >
< a href = "https://github.com/night-cruise" >
< img alt = "Reviewer: night-cruise" class = "profile-img" src = "assets/avatar/avatar_night-cruise.jpg" / >
< br / >
< b >
night-cruise
< / b >
< br / >
< sub >
Rust
< / sub >
< / a >
< / div >
< div class = "profile-cell" >
< a href = "https://github.com/nuomi1" >
< img alt = "Reviewer: nuomi1" class = "profile-img" src = "assets/avatar/avatar_nuomi1.jpg" / >
< br / >
< b >
nuomi1
< / b >
< br / >
< sub >
Swift
< / sub >
< / a >
< / div >
< div class = "profile-cell" >
< a href = "https://github.com/Reanon" >
< img alt = "Reviewer: Reanon" class = "profile-img" src = "assets/avatar/avatar_Reanon.jpg" / >
< br / >
< b >
Reanon
< / b >
< br / >
< sub >
Go, C
< / sub >
< / a >
< / div >
< / div >
< / div >
< div style = "margin: 2em auto;" >
< h3 >
贡献者
< / h3 >
< p >
本书在开源社区 140 多位贡献者的共同努力下不断完善，感谢他们付出的时间与精力！
< / p >
< a href = "https://github.com/krahets/hello-algo/graphs/contributors" >
< img alt = "Contributors" src = "https://contrib.rocks/image?repo=krahets/hello-algo&max=300&columns=16" style = "width: 100%; max-width: 38.5em;" / >
< / a >
< / div >
< / div >
< / section >
< section class = "home-div" data-md-color-primary = "white" data-md-color-scheme = "default" >
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< p >
欢迎在评论区留下你的见解、问题或建议
< / p >
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第 0 章
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第 0 章
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第 1 章
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1.1
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第 2 章
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2.1
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2.3
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3.1
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3.5
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第 4 章
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4.1
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4.3
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4.4
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4.5
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第 5 章
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5.1
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5.2
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5.3
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5.4
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第 6 章
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第 6 章
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6.3
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第 7 章
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第 7 章
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7.1
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7.2
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7.3
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7.4
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7.5
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7.6
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< a class = "md-nav__link" href = "chapter_heap/" >
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第 8 章
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第 8 章
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8.1
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8.2
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8.3
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8.4
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< a class = "md-nav__link" href = "chapter_graph/" >
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第 9 章
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第 9 章
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9.1
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9.2
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9.3
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9.4
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< a class = "md-nav__link" href = "chapter_searching/" >
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第 10 章
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第 10 章
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10.1
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10.2
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10.3
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10.4
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10.5
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10.6
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< a class = "md-nav__link" href = "chapter_sorting/" >
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第 11 章
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第 11 章
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11.1
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11.2
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11.3
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11.4
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11.5
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11.6
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< a class = "md-nav__link" href = "chapter_sorting/heap_sort/" >
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11.7
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11.8
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11.9
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< a class = "md-nav__link" href = "chapter_sorting/radix_sort/" >
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11.10
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11.11
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< a class = "md-nav__link" href = "chapter_divide_and_conquer/" >
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第 12 章
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< nav aria-expanded = "false" aria-labelledby = "__nav_13_label" class = "md-nav" data-md-level = "1" >
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第 12 章
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12.1
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< a class = "md-nav__link" href = "chapter_divide_and_conquer/binary_search_recur/" >
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12.2
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< a class = "md-nav__link" href = "chapter_divide_and_conquer/build_binary_tree_problem/" >
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12.3
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< a class = "md-nav__link" href = "chapter_divide_and_conquer/hanota_problem/" >
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12.4
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< a class = "md-nav__link" href = "chapter_divide_and_conquer/summary/" >
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12.5
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< a class = "md-nav__link" href = "chapter_backtracking/" >
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第 13 章
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