中文说明： 矩阵算法，两两矩阵相乘，不等于0的全部取1，等于0的取0.属于科学运算，Matlab代码，描述挺简单的，因为代码较少，但是竟然要不少于50个字，实在费解，原谅我在凑字数
English Description：
Matrix arithmetic, 22 matrix multiplication, all is not equal to 0 for 1, equal to 0 is 0. science operations, Matlab code to describe very simple, because there is less code, but fewer than 50 words or really confusing, I make up words