Function ShuffleArray

Filters/Sources/vtkRandomHyperTreeGridSource.cxx:37–46

------------------------------------------------------------------------------ * Wrapping around std::shuffle to use vtkMinimalStandardRandomSequence as a custom * generator. */

 * generator.
 */
void ShuffleArray(std::vector<int>& array, vtkMinimalStandardRandomSequence* rng)
{
  for (size_t i = array.size() - 1; i > 0; i--)
  {
    double value = rng->GetValue() * static_cast<double>(array.size());
    int index = vtkMath::Floor(value);
    std::swap(array[i], array[static_cast<int>(index % array.size())]);
    rng->Next();
  }
}
}

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