public static BitSet Of(int a, int b)
{
BitSet s = new BitSet(Math.Max(a, b) + 1);
s.Add(a);
s.Add(b);
return s;
}
public static BitSet Of(int a, int b, int c, int d)
{
BitSet s = new BitSet();
s.Add(a);
s.Add(b);
s.Add(c);
s.Add(d);
return s;
}
public void OrInPlace(BitSet a)
{
if (a == null) {
return;
}
// If this is smaller than a, grow this first
if (a._bits.Length > _bits.Length) {
SetSize(a._bits.Length);
}
int min = Math.Min(_bits.Length, a._bits.Length);
for (int i = min - 1; i >= 0; i--) {
_bits[i] |= a._bits[i];
}
}
public static BitSet Of(int el)
{
BitSet s = new BitSet(el + 1);
s.Add(el);
return s;
}
/** <summary>return this | a in a new set</summary> */
public BitSet Or(BitSet a)
{
if (a == null) {
return this;
}
BitSet s = (BitSet)this.Clone();
s.OrInPlace(a);
return s;
}