通过客户端IP转向指定的城市页面 数据库含23万条数据，删除了所有国外的IP地址，查询不到的IP都被转到“北京”...

数据结构中堆栈的具体应用，实现表达式的化简、求值等功能，可以自由确定变量，并且可以给变量赋值。Vc开发，包括了用户操作界面，输入输出清晰。-stack data structures to the specific applications, simplification of the expression, evaluates functions and the freedom to determine variables, as well as to assign values to variables. Vc development, including the user interface, input and output clear.

documents classification and words statiscs TF/IDF etc

VB 图书馆管理程序-VB library management procedures

huffman树的基本实现. 利用读取TXT文件统计产生huffman树,从而对TXT文件进行压缩和解压.-huffman tree realize. the use of statistics to read TXT file generated huffman tree, thus TXT file compression and decompression.

清华大学严蔚敏老师《数据结构题集(C语言版)》实验3.4 串基本操作的演示-Tsinghua University, Yan Wei-Min teacher

1 创建给定图的存储结构，从邻接表和邻接矩阵两种存储方式中选择一种。 2 对所创建的图进行深度和广度优先搜索遍历，给出遍历过程中的顶点序列。 3 求图的最小生成树，按构造顺序输出边的序列。（两种方法都要求！） -Create a storage structure of a given graph from the adjacency list and adjacency matrix are two ways to choose a store. Two pairs of maps created by the depth and breadth-first search traversal, given the culmination of the process of traversal sequence. 3 order to map the minimum spanning tree, according to the order of the output side of the sequence structure. (Both methods require!)

ADO MD 程序员参考手册 书籍语言： 简体中文 书籍类型： 程序设计 授权方式： 免费软件 书籍大小： 808 KB -ADO MD programmer"s reference manual books Language : English books categories : program design license : free software books Size : 808 KB

它是在 c + + 中的 b + 树实现，是用来查找、 插入和一次晚点的节点，并且我们可以创建到使用的虚拟磁盘

“四皇后算法”的C语言实现，测试通过的，快来下载啊！-" Four Queens algorithm" C-language implementation, test passed, Come download ah!

北京矢量电子地图shp格式，可用于GIS二次开发地图，如MapObjects，MapX等二次开发地图。-Beijing vector electronic map shp format, can be used for secondary development of GIS maps, such as MapObjects, MapX maps and other secondary development.