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定义并实现带头结点的循环双向链表类，除构造和析构函数外，成员函数还有取数据元素个数、插入、删除、取数据元素-definition and take the lead in achieving the cycle node type two-way linked list, in addition to the structural and destructor function, members also function from the number of data elements, insert, delete, extract the data elements

浙大acm在线评判系统zju online judge上面的题目解答源码（1），对于想要提高自己编程能力的同学来说是极好的资料，网上一般不会把这些源代码贴出，本人此次奉献出，也是想为广大编程爱好者做点贡献。-Zheda acm online evaluation system zju online judge the subject to answer the above source (1), for the programming you want to improve their own ability to students is excellent information, the Internet is generally not the source code of these posted, I am the dedicated, but also for the general programming enthusiasts would like to做点贡献.

一个表达式计算器的算法,编译后运行,输出output.txt-An expression calculator algorithms, compiled to run, the output output.txt

网站内容管理系统-Web content management system

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凸壳算法，散点成三维体的方法，该方法从洋鬼子那得来的。-convex hull algorithm, scattered dots on the three-dimensional method from the foreign devils that comes from.

本程序实现了二叉排序树的建立以及查找,插入和删除的功能.-realized by the two forks of trees to establish order and search, insert and delete functions.

本书是作者编程经验的结晶，由发表在杂志上的专栏文章构成，每一章内容相对独立，但都是编程过程中的有机组成部分。本书内容包括问题定义、算法、数据结构、程序验证与测试、程序优化与效率问题，以及这些技巧在排序、查找和字符串处理等方面的几个实际应用。本书每章末尾都附带有相关内容的问题，附录中给出了一些问题的提示和解答。仔细思考问题或与同事进行讨论，可以巩固所学知识，将作者的经验应用到自己的编程实践中。-This book is the author of the crystallization of programming experience, published in the journal by the column consists of the contents of each chapter is relatively independent, but they are in the process of programming an integral part. The book includes problem definition, algorithms, data structures, program verification and testing, process optimization and efficiency issues, as well as these skills in sorting, string search and deal with several aspects of practical application. The book comes at the end of each chapter has relevant content issues, the appendix gives some tips and answers to the problem. Think carefully about questions or discussion with colleagues, you can consolidate the knowledge acquired will be applied to the author

We discussed two versions of the 3-sum problem: A "naive" implementation (O(N^3)) and a "sophisticated" implementation (O(N^2 lg N)). Implement these algorithms.  Your implementation should be able to read data in from regular data/text file with each entry on a separate line.

数据结构中树的相关操作,希望对大家有用!thanks-tree data structure of operation, we hope to useful! Thanks