- package com.instanceofjava;
- import java.util.Scanner;
- class Multiply2Matrices{
- public static void main(String args[])
- {
- int m, n, p, q, sum = 0, c, d, k;
- Scanner in = new Scanner(System.in);
- System.out.println("Enter the number of rows and columns of first matrix");
- m = in.nextInt();
- n = in.nextInt();
- int first[][] = new int[m][n];
- System.out.println("Enter the elements of first matrix");
- for ( c = 0 ; c < m ; c++ )
- for ( d = 0 ; d < n ; d++ )
- first[c][d] = in.nextInt();
- System.out.println("Enter the number of rows and columns of second matrix");
- p = in.nextInt();
- q = in.nextInt();
- if ( n != p )
- System.out.println("Matrices with entered orders can't be multiplied with each other.");
- else
- {
- int second[][] = new int[p][q];
- int multiply[][] = new int[m][q];
- System.out.println("Enter the elements of second matrix");
- for ( c = 0 ; c < p ; c++ )
- for ( d = 0 ; d < q ; d++ )
- second[c][d] = in.nextInt();
- for ( c = 0 ; c < m ; c++ )
- {
- for ( d = 0 ; d < q ; d++ )
- {
- for ( k = 0 ; k < p ; k++ )
- {
- sum = sum + first[c][k]*second[k][d];
- }
- multiply[c][d] = sum;
- sum = 0;
- }
- }
- System.out.println("Multiplication of entered matrices:-");
- for ( c = 0 ; c < m ; c++ )
- {
- for ( d = 0 ; d < q ; d++ )
- System.out.print(multiply[c][d]+"\t");
- System.out.print("\n");
- }
- }
- }
- }
OutPut:
- Enter the number of rows and columns of first matrix
- 2 2
- Enter the elements of first matrix
- 2 2
- 2 3
- Enter the number of rows and columns of second matrix
- 2 2
- Enter the elements of second matrix
- 1 1
- 1 1
- Multiplication of entered matrices:-
- 4 4
- 5 5
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