| 3 | import java.util.Scanner; |
| 4 | public class Matrix_Multiply { |
| 5 | public static void main(String[] args) { |
| 6 | try (Scanner sc = new Scanner(System.in)) { |
| 7 | System.out.println("Enter the row and column number for 1st matrix"); |
| 8 | int n=sc.nextInt(); |
| 9 | int m=sc.nextInt(); |
| 10 | // Input for the row and column number |
| 11 | int a1[][] = new int[n][m]; |
| 12 | // New 2D array for first matrix |
| 13 | System.out.println("Enter "+(n*m)+ " numbers"); |
| 14 | // Taking input of the first matrix |
| 15 | for (int i = 0; i < n; i++) { |
| 16 | for (int j = 0; j < m; j++) { |
| 17 | a1[i][j] = sc.nextInt(); |
| 18 | } |
| 19 | } |
| 20 | int n1=sc.nextInt(); |
| 21 | int m1=sc.nextInt(); |
| 22 | // Input for the row and column number |
| 23 | int a2[][] = new int[n1][m1]; |
| 24 | // New 2D array for second matrix |
| 25 | System.out.println("Enter "+(n1*m1)+ " numbers"); |
| 26 | // Taking input of the second matrix |
| 27 | for (int i = 0; i < n1; i++) { |
| 28 | for (int j = 0; j < m1; j++) { |
| 29 | a2[i][j] = sc.nextInt(); |
| 30 | } |
| 31 | } |
| 32 | if(m!=n1) |
| 33 | { |
| 34 | System.out.println("Invalid coordinates of the matrix"); |
| 35 | return; |
| 36 | } |
| 37 | int multiply[][] = new int[n][m1]; |
| 38 | // New 2D array for multiplication of the two matrices - |
| 39 | System.out.println("The multiplication of two matrices are - "); |
| 40 | // Performing multiplication of two matrices - |
| 41 | for(int i=0;i<n;i++) |
| 42 | { |
| 43 | for(int j=0;j<m1;j++) |
| 44 | { |
| 45 | multiply[i][j]=0; |
| 46 | for(int d=0;d<m;d++) |
| 47 | { |
| 48 | multiply[i][j]=multiply[i][j]+(a1[i][d]*a2[d][j]); |
| 49 | // multiplication method |
| 50 | } |
| 51 | } |
| 52 | } |
| 53 | // Displaying multiplication of two matrices - |
| 54 | for(int i=0;i<n;i++) |
| 55 | { |
| 56 | for(int j=0;j<m1;j++) |
| 57 | { |
| 58 | System.out.print(multiply[i][j]+" "); |
| 59 | } |
| 60 | System.out.println(); |
| 61 | } |
| 62 | } |