Java Program to find the sum of each row and each column of a matrix
public class SumofRowColumn
{
public static void main(String[] args) {
int rows, cols, sumRow, sumCol;
//Initialize matrix a
int a[][] = {
{1, 2, 3},
{4, 5, 6},
{7, 8, 9}
};
//Calculates number of rows and columns present in given matrix
rows = a.length;
cols = a[0].length;
//Calculates sum of each row of given matrix
for(int i = 0; i < rows; i++){
sumRow = 0;
for(int j = 0; j < cols; j++){
sumRow = sumRow + a[i][j];
}
System.out.println("Sum of " + (i+1) +" row: " + sumRow);
}
//Calculates sum of each column of given matrix
for(int i = 0; i < cols; i++){
sumCol = 0;
for(int j = 0; j < rows; j++){
sumCol = sumCol + a[j][i];
}
System.out.println("Sum of " + (i+1) +" column: " + sumCol);
}
}
}
Output:
Sum of 1 row: 6
Sum of 2 row: 15
Sum of 3 row: 24
Sum of 1 column: 12
Sum of 2 column: 15
Sum of 3 column: 18
