matrix multipilication,matrix addision

package afterfeb13; public class matrixmulti { public static void main(String[] args) { int[][] a = { { 1, 3, 5 }, { 5, 6, 7 }, { 1, 2, 3 } }; int[][] b = { { 1, 8, 5 }, { 5, 9, 7 }, { 1, 7, 3 } }; int[][] c = new int[a.length][a[0].length]; for (int row = 0; row < a.length; row++) { for (int col = 0; col < b[0].length; col++) { for (int k = 0; k < b.length; k++) { c[row][col] += a[row][k] * b[k][col];// c[0][0] = (a[0][0] * b[0][0]) + (a[0][1] * b[1][0]) + // (a[0][2] * b[2][0]) //=(1*1)+(2*5)+(5*1)=21//(1*8)+(2*9)+(5*7)=70//(1*5)+(2*7)+(5*3)=21//it represent row *col } System.out.print(c[row][col] + " "); } System.out.println(); } } } 

package afterfeb13; public class matrixadd { public static void main(String[] args) { int[][] a = { { 1, 3, 5 }, { 5, 6, 7 }, { 1, 2, 3 } }; int[][] b = { { 1, 8, 5 }, { 5, 9, 7 }, { 1, 7, 3 } }; int[][] c = new int[a.length][a[0].length];// temp con for (int row = 0; row < a.length; row++) { for (int col = 0; col < b[0].length; col++) { c[row][col] = a[row][col] + b[row][col]; System.out.print(c[row][col] + " "); } System.out.println(); } } }