Question

How to add two matrices (matrix) in Java

Answer 1

package javaapplication1;

public class JavaApplication1 {
  
    public static void main(String[] args) {
         
        int[][] matrix1 = { { 1, 1 }, { 2, 2 }, { 3, 3 }, { 4, 4 } };
        int[][] matrix2 = { { 5, 5 }, { 6, 6 }, { 7, 7 }, { 8, 8 } };
        int[][] sum =     { { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 } };
 
        int rows = matrix1.length;
        int cols = matrix1[0].length;
 
        for (int i = 0; i < rows; i++)
             for (int j = 0; j < cols; j++)
                  sum[i][j] = matrix1[i][j] + matrix2[i][j];
         
        for (int i = 0; i < rows; i++)
        {
             for (int j = 0; j < cols; j++)
                  System.out.format("%d ", sum[i][j]);
             System.out.println();
        }
    }
}
    
/*
run:
   
6 6 
8 8 
10 10 
12 12
    
*/

 

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