研究生期间上《数值计算方法》课的作业，所有代码都是C语言实现并调试通过，现在上传为大家服务。这是Doolittle分解的算法...

把屏蔽字库保存到一棵多叉树里。然后实现屏蔽字过滤。输入字符串，遇到屏蔽字会替换成”*“。这棵树可以从文本文件加载，也可保存到文本文件或二进制文件；也可以从二进制文件加载；或者在程序里动态添加关键字。

应用背景arcEngine地图绘画，初学者可以借鉴关键技术arcEngine绘画，地图实例已大连的实际应用为背景

应用背景Build Instructions: Make sure you have autoconf, swig, texinfo, python-dev, build-essential packages or equivalent installed via your package manager. cd libredwg ./autogen.sh && ./configure && make && sudo make install cd ../dxflib ./configure && make && sudo make install cd .. Once the above dependencies have been built, edit /usr/local/include/dwg.h, and rename the THICKNESS constant (or add _ to end). It conflicts with another constant included in the converter, but is not used itself. After that, just run "make". That"s it! 关键技术GNU LibreDWG 是一个免费开源的 C 库用来处理 DWG 文件，这

used to 计算p0点到直线p1p2的距离-p0 points used to calculate the straight-line distance p1p2

php上传图片文件，多种格式，可显示是否上传成功，可以预览图片效果，直接在浏览器里输入Url，即可操作。up.phpup2.php，提供文件上传到哪个路径，可查看。

veins发送CAM消息源码

产生服从N(0,1)分布的子程序（fortran）-Have to obey N (0,1) distribution Subroutine (fortran)

最小二乘法和主成分回归法对同一数据进行分析，比较其优缺点-Least square method and principal component regression analysis of the data on the same, compare their advantages and disadvantages

采用了基本的蚁群算法来求解0-1背包问题，该算法不仅可以对0-1背包问题进行求解，还可以对多维背包问题进行求解。-Using the basic ant colony algorithm to solve the 0-1 knapsack problem, the algorithm not only for the 0-1 knapsack problem can be solved, but also multi-dimensional knapsack problem can be solved.

高斯消元法解方程， 速度较快-PGE Solving equations faster