实现树的创建算法，创建一个至少包含3层，8个结点的二叉树，并对此树实现先中后序的递归遍历算法。输出三种遍历结果。再实现一个叶子结点查找算法，判断一个给定的数值是...

一个数据结构，其中每个元素包含指向下一个和以前的内容在列表中，形成了双向线性名单。-A data structure in which each element contains pointers to the next and previous elements in the list, thus forming a bidirectional linear list.

要求完成以下功能： 1)能够从屏幕上读取一个学生的信息并将信息存入到数据文件中。 2)能够将指定的信息从文件中删除。 3)能够按编号、姓名对学生的信息进行检索并将检索结果显示在屏幕上。 4)可以统计全部学生的总成绩，及其在班上的排名。 5)能够统计各科的平均成绩及及格率。 6)要求有错误提示功能，例如性别只能输入男女，输入错误提示重新输入。 7)如果检索不到相应的信息应提示用户。-asked to perform the following functions : 1) to read from the screen of a student"s information will be deposited into the data file. 2) can be designated information deleted from the document. 3), according to numbers, the names of the students will retrieve information retrieval results showed on the screen. 4) Statistical all students can be a total score, and the class rankings. 5) Statistics Branch to the average scores and passing rates. 6) require a functional error messages, such as sex between men and women can only import, importation of error messages to re-enter. 7) If less than the corresponding retrieval of information should prompt the user.

个人所得简税计算与作表软件，适合一月多发情况-Brief personal income tax calculation for the table with the software, for January-prone situations

考勤系统.运行本系统时，登录界面要求输入系统的用户名和密码，此系统提供了两种类型的用户，一种是超级用户，具有执行所有功能的权限，另一种是签到用户，只具有签到功能，因此，这里提供了两个默认的用户名和密码，一个是超级用户，用户名为000，密码为000，另外一个是签到用户，用户名为111，密码为111。-Time and Attendance system. Operation of the system, the login screen for the importation of the system user name and password, the system provides two types of users, one is the super-user, with the implementation of all functions of the authority, another is a sign-user, only sign function, so, here are two default user name and password, a super-user, the user name 000, password 000, the other one is the sign user, the user name 111, password is 111.

数据库方面的法宝,里面包括数据库学习和练习java　-database for the purpose of the database includes learning and practicing java

用VB写的和数据库联合编程的电子图档管理系统 -VB write joint programming and database of electronic document management system

医院门诊管理系统:它是由任天华完全自主开发的医院数据库管理系统，以病人就诊的流程中的站点为基本要素，使数据信息一体化、统一化的一个门诊管理系统。-it is by any Tianhua hospitalcompletely self-developed databasemanagementsystem for patients in the treatment processas the basic elements of the site to make data integration, unified management system of a patient.

基于C#语言的一个物流信息网数据库系统开发案例的源代码 ,很实用-Based on the C# Language a logistics information network database system for the development of cases the source code, it is practical

把dat文件转化为grd文件 供surfer使用-Dat file into the GRD surfer documents for use

哈夫曼编码译码的程序，详细大家能用的上。程序里面有注释-Huffman encoding decoding procedures, we can use the details on. There are procedures Notes