Macierzaqki z naszej kpaki

 package macierzaki;

public class Macierzaki {

    double[][] tab;
    String name;
    int wi, ko;

    Macierzaki(int w, int k, String n) {
        name = n;
        tab = new double[w][k];
        wi = w;
        ko = k;
    }

    Macierzaki(int w, String n) {
        this(w, w, n);
    }

    Macierzaki(int w, int k) {
        this(w, k, "");
    }

    Macierzaki(int w) {
        this(w, w, "");
    }

    Macierzaki wytnijWiersz(int ww) {
        Macierzaki result = new Macierzaki(tab.length -1,tab[0].length, name);
        for (int i = 0; i < ww; i++) {
            for (int j = 0; j < tab[0].length; j++) {
                    result.tab[i][j] = this.tab[i][j];


            }
        }
        for (int i=ww; i < tab.length -1; i++) {
            for (int j = 0; j < tab[0].length; j++) {

                    result.tab[i][j] = this.tab[i+1][j];


            }
        }
        return result;
    }

    Macierzaki wytnijKolumne(int wk) {
        Macierzaki result = new Macierzaki(tab.length,tab[0].length-1, name);
        for (int i = 0; i < tab.length; i++) {
            for (int j = 0; j < wk; j++) {

                   result.tab[i][j] = this.tab[i][j];
            }
            for (int j = wk; j <tab[0].length-1; j++)
            {
                 result.tab[i][j] = this.tab[i][j+1];
            }
        }
        return result;
    }

    Macierzaki wytnijWierszeKolumny(int ww, int wk) {
        Macierzaki temp = this.wytnijWiersz(ww);
        return temp.wytnijKolumne(wk);
    }

    double det() {
        double result = 0.0;

            for (int j = 0; j < this.tab[0].length; j++) {
                if (this.tab.length == 1 && this.tab[0].length == 1) {
                    result = tab[0][0];
                } else {
                    result += tab[0][j] *Math.pow(-1,j+2)* this.wytnijWierszeKolumny(0, j).det();
                }

            }

        return result;

    }

    public static void main(String[] args) {
        Macierzaki m1 = new Macierzaki(3, 3);
        m1.tab[0][0] = 1;
        m1.tab[0][1] = 8;
        m1.tab[0][2] = 32;
        m1.tab[1][0] = 15;
        m1.tab[1][1] = 7;
        m1.tab[1][2] = 4;
        m1.tab[2][0] = 2;
        m1.tab[2][1] = 5;
        m1.tab[2][2] = 2;
        System.out.println(m1.det());

    }