/* */ package ch08; /* */ /* */ import java.util.Scanner; /* */ /* */ public class Ch08Q06 { /* */ public static void main(String[] args) { /* 7 */ Scanner scanner = new Scanner(System.in); /* 8 */ double[][] matrix1 = new double[3][3]; /* 9 */ double[][] matrix2 = new double[3][3]; /* 10 */ System.out.print("Enter matrix1: "); int i; /* 11 */ for (i = 0; i < matrix1.length; i++) { /* 12 */ for (int k = 0; k < (matrix1[i]).length; k++) { /* 13 */ matrix1[i][k] = scanner.nextDouble(); /* */ } /* */ } /* 16 */ System.out.print("Enter matrix2: "); /* 17 */ for (i = 0; i < matrix2.length; i++) { /* 18 */ for (int k = 0; k < (matrix2[i]).length; k++) { /* 19 */ matrix2[i][k] = scanner.nextDouble(); /* */ } /* */ } /* 22 */ double[][] result = multiplyMatrix(matrix1, matrix2); /* 23 */ System.out.println("The matrices are added as follows"); /* 24 */ for (int j = 0; j < result.length; j++) { /* 25 */ int k; for (k = 0; k < (result[j]).length; k++) { /* 26 */ System.out.printf("%5.1f", new Object[] { Double.valueOf(matrix1[j][k]) }); /* */ } /* 28 */ if (j != 1) { /* 29 */ System.out.print("\t\t"); /* */ } else { /* */ /* 32 */ System.out.print("\t*\t"); /* */ } /* 34 */ for (k = 0; k < (result[j]).length; k++) { /* 35 */ System.out.printf("%5.1f", new Object[] { Double.valueOf(matrix2[j][k]) }); /* */ } /* 37 */ if (j != 1) { /* 38 */ System.out.print("\t\t"); /* */ } else { /* */ /* 41 */ System.out.print("\t=\t"); /* */ } /* 43 */ for (k = 0; k < (result[j]).length; k++) { /* 44 */ System.out.printf("%5.1f", new Object[] { Double.valueOf(result[j][k]) }); /* */ } /* 46 */ System.out.println(); /* */ } /* */ } /* */ /* */ public static double[][] multiplyMatrix(double[][] a, double[][] b) { /* 51 */ double[][] result = new double[3][3]; /* 52 */ for (int i = 0; i < a.length; i++) { /* 53 */ for (int j = 0; j < (a[i]).length; j++) { /* 54 */ for (int k = 0; k < (result[i]).length; k++) { /* 55 */ result[i][j] = result[i][j] + a[i][k] * b[k][j]; /* */ } /* */ } /* */ } /* 59 */ return result; /* */ } /* */ } /* Location: /Volumes/TXS.128G/hope useful/practice/2020.jar!/ch08/Ch08Q06.class * Java compiler version: 8 (52.0) * JD-Core Version: 1.1.3 */