exchange

二叉树的先序遍历。采用递归实现。释放资源时用了后序遍历。(Preorder traversal of a binary tree. Recursive implementation. Release resources used after preorder.)

mfc 连接数据库 用mfc做的管理系统，戏中包括数据库连接(mfc connect to the database)

哈夫曼树可以使读者快速方便的查找所需文件(Huffman tree allows readers to quickly and easily find the file)

约瑟夫问题，通过C语言对约瑟夫问题进行了分析和讲解，从而解决问题(Joseph problems, by Joseph C language issues are analyzed and explained, in order to solve the problem)

本代码是通过C语言来实现贪心算法求着色问题,包括具体问题和实现代码(This code is the C language to implement the greedy algorithm for the coloring problem, including specific issues and the implementation code)

具有数据插入、修改、删除、显示、和查询功能的电话簿管理程序。 数据包括：人名、工作单位、电话号码、和E-mail地址。 可对记录中的姓名和电话号码进行修改。 可增加或删除记录。 可显示所有保存的记录。 可按人名或电话号码进行查询。 附加功能： 可修改单个记录的各项内容。 可重新建立电话簿。 可按人名或号码进行排序。 可统计名片数目及可再添加数目。 可插入单个名片并不破坏原有顺序(With the data to insert, modify, delete, display, and query functions of the phone book management program. The data include: the names, work units, phone number, and E-mail address. Can be modified to record the name and phone number. Increase or delete records. You can display all the records kept. According to the names or telephone number for queries. Additional features: you can modify the content of a single record. Can re-establish a Phonebook. According to the names or numbers to be sorted. Statistical card number and add the number. Insert a single card does not destroy the original order)

A*算法通过启发式探索下一结点，逐步逼近目标结点，且使得路径最短。(A* algorithm heuristic to explore the next node, and gradually approaching the target node, and that the shortest path.)

给定n种物品和一背包。物品i的重量是wi>0,价值为vi>0,背包的容量为c。选择装入背包的物品，使得装入背包中物品的总价值最大。(Given n kinds of goods and a backpack. Weight of the item i is wi> 0, the value of vi> 0, knapsack capacity c. Select the items into the backpack, so into the backpack of items in the total value of the maximum.)

魔王语言：输入一串字符，可自动翻译成一串语言。(the program of language)

北邮数据结构课程设计大作业之旅行模拟查询系统。可实现多线程多旅客、中途更改计划、动态显示旅客状态等多个需求。已通过验收。(BUPT curriculum design travel query system simulation of large operations. Multithreading enables passengers to change plans midway, dynamic display multiple demands guest status. It has passed inspection.)