完成关于矩阵分解的LU、QR（Gram-Schmidt）、Orthogonal Reduction (Householder reduction 和Givens reduction)程序实现，要求如下：

1、一个综合程序，根据选择参数的不同，实现不同的矩阵分解；

2、可以用matlab等编写程序，需附上简单的程序说明，比如参数代表什么意思，输入什么，输出什么等等；

不能为直接调用matlab等函数库；-Complete LU decomposition on the matrix, QR (Gram-Schmidt), Orthogonal Reduction (Householder reduction and Givens reduction) program implementation requirements are as follows:

                 　1, an integrated program, depending on the selection of parameters, to achieve different matrix decomposition

                   　2, you can use matlab programming, etc., must be attached on a simple descr iption of the procedures, such arguments on behalf of what it meant, what input, output, and so what

You can not directly call matlab function library, etc