55. Matrix Multiplication. import java.util.Scanner; class | Advance Java 👨💻
55. Matrix Multiplication.
import java.util.Scanner;
class MatrixMultiplication { 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("Product of entered matrices:-");
for (c = 0; c < m; c++) { for (d = 0; d < q; d++) { System.out.print(multiply[c][d] + "\t"); }
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