Java数据结构电子书:There are plenty of books that teach introductory data structures. Some of them are very good. Most of them cost money, and the vast majority of computer science undergraduate students will shell out at least some cash on a data structures book. Several free data structures books are available online. Some are very good, but most of them are getting old. The majority of these books be- came free when their authors and/or publishers decided to stop updat- ing them. Updating these books is usually not possible, for two reasons: (1) The copyright belongs to the author and/or publisher, either of whom may not allow it. (2) The source code for these books is often not avail- able. That is, the Word, WordPerfect, FrameMaker, or LATEX source for the book is not available, and even the version of the software that han- dles this source may not be available. The goal of this project is to free undergraduate computer science stu- dents from having to pay for an introductory data structures book. I have decided to implement this goal by treating this book like an Open Source software project. The LATEX source, Java source, and build scripts for the book are available to download from the author’s website1 and also, more importantly, on a reliable source code management site.2