Function unittest

libraries/statHelpers/test/unit_test_001.cpp:52–85

unittest(test_permutations)
{
  fprintf(stderr, "\n\tpermutations(12, k)\n");
  for (int k = 0; k <= 12; k++)
  {
    fprintf(stderr, "%d\t%d\n", k, permutations(12, k));
  }

  fprintf(stderr, "\n\tpermutations64(20, k)\n");
  for (int k = 0; k <= 20; k++)
  {
    fprintf(stderr, "%d\t%ld\n", k, permutations64(20, k));
  }

  fprintf(stderr, "\n\tdpermutations(34, k)\n");
  for (int k = 0; k <= 34; k++)
  {
    fprintf(stderr, "%d\t%f\n", k, dpermutations(34, k));
  }

  fprintf(stderr, "\n120 permutations of abcde\n\n");
  char text[] = "abcde";
  int count = 0;
  do
  {
    fprintf(stderr, "%s\t", text);
    count++;
    if (count % 5 == 0) fprintf(stderr, "\n");
  }
  while (nextPermutation<char>(text, 5));
  fprintf(stderr, "\n\n");

  assertEqual(120, count);
}


unittest(test_factorial)