Question

How to subtract two matrices (matrix) in Java

Answer 1

public class MyClass {
    public static void main(String args[]) {
    	int[][] matrix1 = {
    		{1, 2, 3, 4},
    		{5, 6, 7, 8},
    		{9, 7, 6, 3}
    	};
    	int[][] matrix2 = {
    		{1, 1, 1, 1},
    		{2, 2, 2, 2},
    		{3, 3, 3, 3}
    	};
    	int[][] sub = {
    		{0, 0, 0, 0},
    		{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++) {
    			sub[i][j] = matrix1[i][j] - matrix2[i][j];
    		}
    	}
    
    	for (int i = 0; i < rows; i++) {
    		for (int j = 0; j < cols; j++) {
    			System.out.print(sub[i][j] + " ");
    		}
    		System.out.print("\n");
    	}
    }
}



/*
run:

0 1 2 3 
3 4 5 6 
6 4 3 0 

*/

 

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