public static void comb_unrank_test()
//****************************************************************************80
//
// Purpose:
//
// COMB_UNRANK_TEST tests COMB_UNRANK.
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 11 October 2006
//
// Author:
//
// John Burkardt
//
{
const int N = 5;
int[] a = new int[N];
int i;
const int m = 10;
int rank;
string cout;
int cnk = typeMethods.i4_choose(m, N);
Console.WriteLine("");
Console.WriteLine("COMB_UNRANK_TEST");
Console.WriteLine(" COMB_UNRANK returns a combination of N things");
Console.WriteLine(" out of M, given the lexicographic rank.");
Console.WriteLine("");
Console.WriteLine(" The total set size is M = " + m + "");
Console.WriteLine(" The subset size is N = " + N + "");
Console.WriteLine(" The number of combinations of N out of M is " + cnk + "");
Console.WriteLine("");
Console.WriteLine(" Rank Combination");
Console.WriteLine("");
for (rank = 1; rank <= 3; rank++)
{
Comb.comb_unrank(m, N, rank, ref a);
cout = " "
+ rank.ToString().PadLeft(3) + " ";
for (i = 0; i < N; i++)
{
cout += a[i].ToString().PadLeft(4) + " ";
}
Console.WriteLine(cout);
}
for (rank = 6; rank <= 8; rank++)
{
Comb.comb_unrank(m, N, rank, ref a);
cout = rank.ToString().PadLeft(3) + " ";
for (i = 0; i < N; i++)
{
cout += a[i].ToString().PadLeft(4) + " ";
}
Console.WriteLine(cout);
}
for (rank = 250; rank <= 252; rank++)
{
Comb.comb_unrank(m, N, rank, ref a);
cout = " " + rank.ToString().PadLeft(3) + " ";
for (i = 0; i < N; i++)
{
cout += a[i].ToString().PadLeft(4) + " ";
}
Console.WriteLine(cout);
}
}
