C++编写的快速离散余弦变换

快速傅立叶变换的实现算法。包括1维FFT、2维FFT及其逆变换，以及离散变换的相关源码。-Fast Fourier Transform algorithm. Including the one-dimensional FFT, 2-dimensional FFT and its inverse transform, as well as the related discrete transform source code.

平均因子分解法，适用于正定矩阵First, let s recall the definition of the Cholesky decomposition: Given a symmetric positive definite square matrix X, the Cholesky decomposition of X is the factorization X=U U, where U is the square root matrix of X, and satisfies: (1) U U = X (2) U is upper triangular (that is, it has all zeros below the diagonal). It seems that the assumption of positive definiteness is necessary. Actually, it is "positive definite" which guarantees the existence of such kind of decomposition. -Average factor decomposition method applied to positive definite matrix First, let s recall the definition of the Cholesky decomposition: Given a symmetric positive definite square matrix X, the Cholesky decomposition of X is the factorization X = UU, where U is the square root matrix of X, and satisfies: (1) UU = X (2) U is upper triangular (that is, it has all zeros below the diagonal). It seems that the assumption of positive definiteness is necessary. Actually, it is positive

函数按值传递，教你如何用使用C语言编程，教学用。-Function is passed by value, teach you how to use the C language programming, teaching.

Fortran求解矩阵线性方程组，有例子，可以直接运行 /"P.S:本软件既可以计算线性方程组Ax=b，也可以计算矩阵方程AX=B")  Purpose   :  消去法解矩阵方程 !     !----------------------------------------------------- !  In put data  files : !       1.  fin.txt  输入方程系数 !       2. !  Output data files  :

很全的数据结构源代码，线性表、树、图的代码都有具体实现。以及字符串的各种操作

工程计算中经常用到的数值vc算法，对于进行数值模拟的网友很有用-engineering calculation frequently used vc numerical algorithm for the numerical simulation of netizens useful

Polimorpich文件加密系统。用delphixe2编程。在没有代码注释的情况下，不要使用AES、rijndael等。

这是用于计算光子晶体能带结构的VC源程序。-This is used in the calculation of photonic crystal band structure of VC source.

java程序实现的通俗易懂的二分查找的算法源代码-java program to achieve the user-friendly dichotomous search algorithm source code

长整数类，数据成员有一个指针，一个整数size，可以存放100位以上整数，可以做加法乘法运算-long integer, data members of a pointer, an integer size, can be kept above 100 integer, the additive can do multiplication