public void WriteSelected()
{
WeightedItem selectedItem = GetItem();
if (selectedItem != null)
{
Console.WriteLine(selectedItem.Text + ": " + selectedItem.Weight);
}
else
{
Console.WriteLine("All items have 0 probability of getting selected");
}
}
public WeightedItem GetItem()
{
int totalWeight = items.Sum(x => x.Weight);
Random rnd = new Random((int)DateTime.Now.Ticks);
int random = rnd.Next(0, totalWeight);
WeightedItem selected = null;
foreach (var item in items)
{
if (random < item.Weight && item.Weight > 0)
{
//need a new item and not a reference to get the right weights
selected = new WeightedItem(item.Text, item.Weight);
//decrease item's weight
item.Weight -= _decreaseIncrement;
break;
}
random -= item.Weight;
}
return(selected);
}
