public void WeightedSel()
{
List <int> choices = new List <int> {
1, 2, 3, 4
};
var choice_chooser = new WeightedSelector <int>(choices.Select(c => Tuple.Create(c, c * 1.0)));
Random rando = new Random();
List <int> outputs = new List <int>();
for (int i = 0; i < 10000; i++)
{
outputs.Add(choice_chooser.PickRandom(rando));
}
var groups = string.Join("|", outputs.GroupBy(c => c).Select((c, d) => c.Key + " " + c.Count()));
}