jffry

function orderedSelectionsWithReplacement(numChoices, subsetSize)
{
  var subsets = [], i, advance, picks = new Array(subsetSize).fill(null), pos = 0;
  while (true)
  {
    //try to find something that has yet to be used
    advance = false;
    for (i = picks[pos]||0; i < numChoices; i++)
    {
      picks[pos] = i;