public static void getNumberPattern(int n) {
        int change=n;
        for (int i=0; i<n; i++) {
            for (int j=0; j<2*n-1; j++) {
                if (j!=0 && j<=i) change--;
                else if (j >= 2*n-1-i) change++;
                System.out.print(change);
            }
            System.out.println();
        }
        change=n;
        for (int i=n-2; i>=0; i--) {
            for (int j=0; j<2*n-1; j++) {
                if (j<=i && j!=0) change--;
                else if (j >= 2*n-1-i) change++;
                System.out.print(change);
            }
            System.out.println();
        }
    }