三元一次方程组的程序

/**/ /*
 * 我刚学JAVA看了一天才看懂这个程序！！好好学以后把它的功能扩大再做个界面^^
 * 一个计算三元方程组的程序2x+4y+6z=10
 *                         x-2y-3z=6
 *                         2x-2y+4z=8
 *                    把方程组变为2维矩阵  matrix[][]={ {2,4,6,10},
*                                                     {1,-2,-3,6},
*                                                     {2,-2,4,8}};
*                       通过程序把2维矩阵变为主对角线都为1  matrix[][]={ {1.0, 0.0, 0.0, 5.5},
*                                                                      {-0.0, 1.0, 0.0, 0.5},
*                                                                      {0.0, 0.0, 1.0, -0.5}};   
*                               方程的解就为x=5.5,y=0.5,z=-0.5                                                                
 */

class  juzhen
... {

public static void swapRows(double matrix[][],int row1,int row2 )       //数组的两行交换
...{
    for(int col=0;col<matrix[row1].length;col++)
    ...{