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