求行列式值的全选主元高斯消去法的c语言实现-Demand determinant value of the Select Principal Gaussian elimination c-language implementation

简单的一个全排列的算法，如：3的全排列为：123,132,213,231,312,321-A full array of simple algorithms, such as: three full order: 123,132,213,231,312,321