简单的Java循环控制实现行列式算法

public class Arranger {

private double[][] arrangerMatrix;

private double arrangerResult=1.0;

public static void main(String args[]){

double[][] a={{4,1,4,8},{1,1,3,2},{2,2,5,1},{2,2,1,4}};

Arranger ar=new Arranger();

ar.arrFunction(a);//把行列式变成上三角行列式

ar.displayMatrix();//显示得出的上三角行列式

ar.displayResult();

//显示行列式计算结果

}

public void arrFunction(double[][] a){//Guass 消去

double k=0;

for (int p = 0; pfor (int r =p+1; rk=a[r][p]/a[p][p];a[r][p]=0;for (int c = p+1; ca[r][c]=a[r][c]-k*a[p][c];}//u}//r}//carrangerMatrix=new double[a.length][a[0].length];for (int i = 0; ifor (int j = 0; jarrangerMatrix[i][j]=a[i][j];if (i==j) {arrangerResult=arrangerResult*a[i][j];}//计算主对角线相乘的结果//System.out.println (a[i][j]+" ");}//j}//i}public void displayMatrix(){for (int i = 0; ifor (int j = 0; jSystem.out.print (arrangerMatrix[i][j]+" ");}//jSystem.out.println ();}//i}public void displayResult(){System.out.println ("The result is "+arrangerResult);}