生成多元正态分布的随机数，将其按列的形式放在一个矩阵中，并对其按行进行排序，然后记录数据排序后的大小位置，这在统计研究中有很重要的应用。-Multivariate normal distribution of the random number generator, which was placed in the form of a matrix of columns and rows to sort them, and then record the size of the position data sorted, which has very important applications in statistical research