Exemple #1
0
    public static void multinomial_coef1_test()

    //****************************************************************************80
    //
    //  Purpose:
    //
    //    MULTINOMIAL_COEF1_TEST tests MULTINOMIAL_COEF1.
    //
    //  Licensing:
    //
    //    This code is distributed under the GNU LGPL license.
    //
    //  Modified:
    //
    //    07 March 2007
    //
    //  Author:
    //
    //    John Burkardt
    //
    {
        const int MAXFACTOR = 5;

        int[] factor = new int[MAXFACTOR];
        int   i;
        int   ncomb;

        Console.WriteLine("");
        Console.WriteLine("MULTINOMIAL_COEF1_TEST");
        Console.WriteLine("  MULTINOMIAL_COEF1 computes multinomial");
        Console.WriteLine("  coefficients using the Gamma function;");

        Console.WriteLine("");
        Console.WriteLine("  Line 10 of the BINOMIAL table:");
        Console.WriteLine("");

        int n       = 10;
        int nfactor = 2;

        for (i = 0; i <= n; i++)
        {
            factor[0] = i;
            factor[1] = n - i;

            ncomb = Multinomial.multinomial_coef1(nfactor, factor);

            Console.WriteLine(factor[0].ToString().PadLeft(4) + "  "
                              + factor[1].ToString().PadLeft(4) + "  "
                              + "    "
                              + ncomb.ToString().PadLeft(5) + "");
        }

        Console.WriteLine("");
        Console.WriteLine("  Level 5 of the TRINOMIAL coefficients:");

        n       = 5;
        nfactor = 3;

        for (i = 0; i <= n; i++)
        {
            factor[0] = i;

            Console.WriteLine("");

            int j;
            for (j = 0; j <= n - factor[0]; j++)
            {
                factor[1] = j;
                factor[2] = n - factor[0] - factor[1];

                ncomb = Multinomial.multinomial_coef1(nfactor, factor);

                Console.WriteLine(factor[0].ToString().PadLeft(4) + "  "
                                  + factor[1].ToString().PadLeft(4) + "  "
                                  + factor[2].ToString().PadLeft(4) + "  "
                                  + "    "
                                  + ncomb.ToString().PadLeft(5) + "");
            }
        }
    }