# Summary ### Key Review - The main audience of this book is algorithm beginners. If you already have a certain foundation, this book can help you systematically review algorithm knowledge, and the source code in the book can also be used as a "problem-solving toolkit." - The content of the book mainly includes three parts: complexity analysis, data structures, and algorithms, covering most topics in this field. - For algorithm novices, reading an introductory book during the initial learning stage is crucial, as it can help you avoid many detours. - The animated illustrations in the book are usually used to introduce key and difficult knowledge. When reading this book, you should pay more attention to these contents. - Practice is the best way to learn programming. It is strongly recommended to run the source code and type the code yourself. - The web version of this book has a comments section for each chapter, where you are welcome to share your questions and insights at any time.