Java program on matrix addition in java?

Answer 1

Here's a method I wrote in Java that should do what you want:

public static int[][] addMatrices(int[][] mat1, int[][] mat2) {

int biggestWidth = mat1.length > mat2.length ? mat1.length : mat2.length;

int biggestHeight = mat1[0].length > mat2[0].length ? mat1[0].length : mat2[0].length;

int[][] answer = new int[biggestWidth][biggestHeight];

for(int i = 0; i<biggestWidth; i++) {

for(int j = 0; j<biggestHeight; j++) {

int one = 0;

if(i < mat1.length && j < mat1[i].length) one = mat1[i][j];

int two = 0;

if(i < mat2.length && j < mat2[i].length) two = mat2[i][j];

answer[i][j] = one + two;

}

}

return answer;

}