public Bag<int> ToIntBag()
{
Bag<int> result = new Bag<int>();
if (this.IsEmpty())
{
return result;
}
int size = this.Cardinality();
result.EnsureCapacity(size);
int[] activesArray = result.data;
for (int i = this.NextSetBit(0), index = 0; i >= 0; i = this.NextSetBit(i + 1))
{
activesArray[index++] = i;
}
return result;
}