Pascal

package pkg;

class Pascal {
    int n;

    Pascal()
    {
        System.out.print("\tDefault Const called!\n");
        n = 3;
    }
    Pascal(int n)
    {
        System.out.print("\tParameterized Const called!\n");
        this.n=n;
    }

    int nCr(int n, int k)
    {
        int r = 1;
        if(k > n - k)
            k = n - k;
        for(int i = 0; i < k; ++i)
        {
            r *= (n - i);
            r /= (i + 1);
        }
        return r;
    }

    void printPascal()
    {
        for(int l = 0; l < n; l++)
        {
            for(int i = 0; i <= l; i++)
                System.out.print(" "+ nCr(l,i));
            System.out.println();
        }
    }

}