conver the data to absolute value

cython写的DTMF解码器（python直接使用，效率和c接近）

我这是割线法和改进的欧拉法的源代码-This a secant method and improve the Eulerian method of source code!

这里介绍的是利用道格拉斯算法实现制图综合，特别是图像的处理，方便而实用，代码简单，原理清楚，希望大家下载互相学习，共同进步！

写多项式类，并进行多项式的输入输出，加减运算。

用C语言实现的角点检测算法，里面是一个word文档，详细描述了角点检测的实现过程，有很强的参考价值：  第一步：利用差分算子对图像进行滤波 第一步：利用差分算子对图像进行滤波 第二步：对Ix2/Iy2/Ixy进行高斯平滑，以去除噪声 第三步：计算角点量 第四步：进行局部非极大值抑制以获得最终角点

对偶单纯形法求线性规划最优解-dual simplex method for solving linear programming problems.

在3DIC設計中會使用的方法  Floorplanning is an important and dispensable stage in the traditional integrated circuit design process. With the raised module numbers and increased wire length, the computation complexity is raised dramatically. Obviously, the traditional algorithms need to be updated. We developed an orthogonal table, in which each factor represents a module and the level of a specified factor denotes the orientation of that module. With this orthogonal table, the solution space is significantly decreased.  We use sequence pair to represent a floorplan and the fast longest common subsequence is used accordingly to calculate the area of

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LZW算法的实现   LZW算法 其中 几个对象为 编码流 数据流 以及 编译表   字符即为数值，这里0-255   字符串：几个字符组成的串。这里可以简单用 来描述。其中前缀可以为0。   根：长度为1的字符串。   编码(Code):按照固定的长度从编码流中读取的值，即编译表中映射值。即一个编码对应一个字符串   本程序中将定义编码长度最大为12。最小为8。   本实现中自动根据文件内容生成对应的编译表 一个编码对应一个字符串， 字符串匹配通过hash算法去编译表中查找对应的编码。 hash值 = (前缀的编码+后缀编码)%常数

Finds the polynomial p10 of degree less than or equal to 10 that interpolates cos x on the interval [0, PI/2] at 11 equally spaced points. Study the error betwee between the function and the polynomial at 41 equally spaced points over the same interval. Repeat the latter but use your 11 points to be Chebyshevs.