我如何减去Java中的两个Arraylist二维数组？

Question

我有ArrayList中

ArrayList <double[][]>deltaedge=new ArrayList<double [][]>(); 

含2个2D双数据类型数组我必须从阵列中减去假设数组无0否1，再存放导致数组没有0

Answer 1

double[][] one=deltaedge.get(0); 
double[][] two=deltaedge.get(1); 
double[][] three=Subtraction(one,two);//call this method 

deltaedge.set(0, three);// set the result to zero position 
// subtract method 
public double[][] Subtraction(double[][] one, double[][] two) { 
    double[][] C = new double[one.length][one.length]; 
    for (int r = 0; r < 2; r++) { 
     for (int c = 0; c < 2; c++) { 
      C[r][c] = one[r][c] - two[r][c]; 
     } 
    } 
    return C; 
}