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这是一个用c语言编写FDTD算法程序，用于模拟二位情况下平面波入射到金属方柱时的散射场分布情况。采用了UPML精确的边界截断条件。是本人亲手编写和经过调试的程序，请放心下载使用。适合初学者参考、学习。有疑问，请发邮件给我，方便交流。wang986364521@126.com.

int main（）

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kd-tree的一个简单实现kd-tree的一个简单实现kd-tree的一个简单实现kd-tree的一个简单实现kd-tree的一个简单实现

MATLAB代码kalman滤波目标跟踪.

矩阵的类，可以做矩阵运算-matrix of categories that can be done matrix calculation

信号交替算法方法来绘制信号三角: 积极和消极。这是因为正弦电压被比作一个固定电压。

% Function: [class,type]=dbscan(x,k,Eps) % ------------------------------------------------------------------------- % Aim: % Clustering the data with Density-Based Scan Algorithm with Noise (DBSCAN) % ------------------------------------------------------------------------- % Input: % x - data set (m,n); m-objects, n-variables % k - number of objects in a neighborhood of an object % (minimal number of objects considered as a cluster) % Eps - neighborhood radius, if not known avoid this parameter or put [] % ------------------------------------------------------------------------- % Output: % class - vector specifying assignment of the i-th object to certain % cluster (m,1) % type - vector specifying type of the i-th object % (core: 1, border: 0, outlier: -1)

求解线性规划的对偶单纯形法，c语言版。线性规划的对偶单纯形法用c语言实现

给定一篇英文文本，要求提取其中所有的单词并计算其一元词频（某个单词出现的次数）和二元词频（两个连续单词出现的次数） 举例:I have an apple . And you have an apple , too . 输出: i--1，have--2，an--2，apple--2，and--2，you--1，too--1 an apple--2