Algoritma dan Pemrograman: Implementasi Metode Invers Gauss Jordan

Table of Contents

Berikut ini adalah algoritma metode invers gauss jordan yang saya buat dalam bentuk flowchart :

Dan ini penerapannya dalam pemrograman java

/**
 *
 * @author ABD. CHARIS FAUZAN
 */
public class InversGaussJordan {
        double A[][] = {
        {1, 1 , 1},
        {1, 2, -1},
        {2, 1, 2}
    };
    double B[][] = {
        {1, 0, 0},
        {0, 1, 0},
        {0, 0, 1}
    };
    boolean lanjutkan = true;
    int n = B.length;
    double X[] = new double[n];
    double m = 0;
    double jumB = 0;

    private InversGaussJordan() {
        System.out.println("");
        System.out.println("Matriks awal :");
        printMatriks();
        for (int i = 0; i < B.length; i++) {
            if (A.length != A[i].length) {
                lanjutkan = false;
            }
        }
        if (!lanjutkan) {
            return;
        }
        for (int row = 0; row < n; row++) {
            double tampung = A[row][row];
            for (int col = 0; col < n; col++) {
                A[row][col] /= tampung;
                B[row][col] /= tampung;
            }
            for (int i = 0; i < n; i++) {
                if (i != row) {
                    m = A[i][row];
                    for (int col = 0; col < n; col++) {
                        A[i][col] -= m * A[row][col];
                        B[i][col] -= m * B[row][col];
                    }
                }
            }
        }
        System.out.println("Hasil Invers: ");
        printMatriks();
    }
    public static void main(String[] args) {
        new InversGaussJordan();
    }
    private void printMatriks() {
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < n; j++) {
                System.out.print(A[i][j] + "\t");
            }
            System.out.print("|\t");
            for (int j = 0; j < n; j++) {
                System.out.print(B[i][j] + "\t");
            }
            System.out.println("");
        }
    }
}

Tampilan ketika program dijalankan :