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<h1 id="01-about-this-book">0.1 &nbsp; About this book<a class="headerlink" href="#01-about-this-book" title="Permanent link">&para;</a></h1>
11 months ago
<p>This open-source project aims to create a free, and beginner-friendly crash course on data structures and algorithms.</p>
11 months ago
<ul>
11 months ago
<li>Using animated illustrations, it delivers structured insights into data structures and algorithmic concepts, ensuring comprehensibility and a smooth learning curve.</li>
<li>Run code with just one click, supporting Java, C++, Python, Go, JS, TS, C#, Swift, Rust, Dart, Zig and other languages.</li>
<li>Readers are encouraged to engage with each other in the discussion area for each section, questions and comments are usually answered within two days.</li>
11 months ago
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8 months ago
<h2 id="011-target-audience">0.1.1 &nbsp; Target audience<a class="headerlink" href="#011-target-audience" title="Permanent link">&para;</a></h2>
11 months ago
<p>If you are new to algorithms with limited exposure, or you have accumulated some experience in algorithms, but you only have a vague understanding of data structures and algorithms, and you are constantly jumping between "yep" and "hmm", then this book is for you!</p>
<p>If you have already accumulated a certain amount of problem-solving experience, and are familiar with most types of problems, then this book can help you review and organize your algorithm knowledge system. The repository's source code can be used as a "problem-solving toolkit" or an "algorithm cheat sheet".</p>
<p>If you are an algorithm expert, we look forward to receiving your valuable suggestions, or <a href="https://www.hello-algo.com/chapter_appendix/contribution/">join us and collaborate</a>.</p>
11 months ago
<div class="admonition success">
11 months ago
<p class="admonition-title">Prerequisites</p>
<p>You should know how to write and read simple code in at least one programming language.</p>
11 months ago
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8 months ago
<h2 id="012-content-structure">0.1.2 &nbsp; Content structure<a class="headerlink" href="#012-content-structure" title="Permanent link">&para;</a></h2>
11 months ago
<p>The main content of the book is shown in the following figure.</p>
11 months ago
<ul>
8 months ago
<li><strong>Complexity analysis</strong>: explores aspects and methods for evaluating data structures and algorithms. Covers methods of deriving time complexity and space complexity, along with common types and examples.</li>
<li><strong>Data structures</strong>: focuses on fundamental data types, classification methods, definitions, pros and cons, common operations, types, applications, and implementation methods of data structures such as array, linked list, stack, queue, hash table, tree, heap, graph, etc.</li>
11 months ago
<li><strong>Algorithms</strong>: defines algorithms, discusses their pros and cons, efficiency, application scenarios, problem-solving steps, and includes sample questions for various algorithms such as search, sorting, divide and conquer, backtracking, dynamic programming, greedy algorithms, and more.</li>
11 months ago
</ul>
8 months ago
<p><a class="glightbox" href="../about_the_book.assets/hello_algo_mindmap.png" data-type="image" data-width="100%" data-height="auto" data-desc-position="bottom"><img alt="Main content of the book" class="animation-figure" src="../about_the_book.assets/hello_algo_mindmap.png" /></a></p>
<p align="center"> Figure 0-1 &nbsp; Main content of the book </p>
11 months ago
<h2 id="013-acknowledgements">0.1.3 &nbsp; Acknowledgements<a class="headerlink" href="#013-acknowledgements" title="Permanent link">&para;</a></h2>
10 months ago
<p>This book is continuously improved with the joint efforts of many contributors from the open-source community. Thanks to each writer who invested their time and energy, listed in the order generated by GitHub: krahets, codingonion, nuomi1, Gonglja, Reanon, justin-tse, danielsss, hpstory, S-N-O-R-L-A-X, night-cruise, msk397, gvenusleo, RiverTwilight, gyt95, zhuoqinyue, Zuoxun, Xia-Sang, mingXta, FangYuan33, GN-Yu, IsChristina, xBLACKICEx, guowei-gong, Cathay-Chen, mgisr, JoseHung, qualifier1024, pengchzn, Guanngxu, longsizhuo, L-Super, what-is-me, yuan0221, lhxsm, Slone123c, WSL0809, longranger2, theNefelibatas, xiongsp, JeffersonHuang, hongyun-robot, K3v123, yuelinxin, a16su, gaofer, malone6, Wonderdch, xjr7670, DullSword, Horbin-Magician, NI-SW, reeswell, XC-Zero, XiaChuerwu, yd-j, iron-irax, huawuque404, MolDuM, Nigh, KorsChen, foursevenlove, 52coder, bubble9um, youshaoXG, curly210102, gltianwen, fanchenggang, Transmigration-zhou, FloranceYeh, FreddieLi, ShiMaRing, lipusheng, Javesun99, JackYang-hellobobo, shanghai-Jerry, 0130w, Keynman, psychelzh, logan-qiu, ZnYang2018, MwumLi, 1ch0, Phoenix0415, qingpeng9802, Richard-Zhang1019, QiLOL, Suremotoo, Turing-1024-Lee, Evilrabbit520, GaochaoZhu, ZJKung, linzeyan, hezhizhen, ZongYangL, beintentional, czruby, coderlef, dshlstarr, szu17dmy, fbigm, gledfish, hts0000, boloboloda, iStig, jiaxianhua, wenjianmin, keshida, kilikilikid, lclc6, lwbaptx, liuxjerry, lucaswangdev, lyl625760, chadyi, noobcodemaker, selear, siqyka, syd168, 4yDX3906, tao363, wangwang105, weibk, yabo083, yi427, yishangzhang, zhouLion, baagod, ElaBosak233, xb534, luluxia, yanedie, thomasq0, YangXuanyi and th1nk3r-ing.</p>
11 months ago
<p>The code review work for this book was completed by codingonion, Gonglja, gvenusleo, hpstory, justintse, krahets, night-cruise, nuomi1, and Reanon (listed in alphabetical order). Thanks to them for their time and effort, ensuring the standardization and uniformity of the code in various languages.</p>
11 months ago
<p>Throughout the creation of this book, numerous individuals provided invaluable assistance, including but not limited to:</p>
11 months ago
<ul>
11 months ago
<li>Thanks to my mentor at the company, Dr. Xi Li, who encouraged me in a conversation to "get moving fast," which solidified my determination to write this book;</li>
11 months ago
<li>Thanks to my girlfriend Bubble, as the first reader of this book, for offering many valuable suggestions from the perspective of a beginner in algorithms, making this book more suitable for newbies;</li>
11 months ago
<li>Thanks to Tengbao, Qibao, and Feibao for coming up with a creative name for this book, evoking everyone's fond memories of writing their first line of code "Hello World!";</li>
<li>Thanks to Xiaoquan for providing professional help in intellectual property, which has played a significant role in the development of this open-source book;</li>
<li>Thanks to Sutong for designing a beautiful cover and logo for this book, and for patiently making multiple revisions under my insistence;</li>
<li>Thanks to @squidfunk for providing writing and typesetting suggestions, as well as his developed open-source documentation theme <a href="https://github.com/squidfunk/mkdocs-material/tree/master">Material-for-MkDocs</a>.</li>
11 months ago
</ul>
11 months ago
<p>Throughout the writing journey, I delved into numerous textbooks and articles on data structures and algorithms. These works served as exemplary models, ensuring the accuracy and quality of this book's content. I extend my gratitude to all who preceded me for their invaluable contributions!</p>
<p>This book advocates a combination of hands-on and minds-on learning, inspired in this regard by <a href="https://github.com/d2l-ai/d2l-zh">"Dive into Deep Learning"</a>. I highly recommend this excellent book to all readers.</p>
<p><strong>Heartfelt thanks to my parents, whose ongoing support and encouragement have allowed me to do this interesting work</strong>.</p>
11 months ago
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