/** Returns true, if the object is in the set. */
public boolean contains(T obj) {
/* check if the object is in the map, direct call of map.getInt will
* add the object into the map.
*/
if (!map.contains(obj)) return false;
int bitNum = map.getInt(obj);
return (bits[bitNum / 32] & (1 << (bitNum % 32))) != 0;
}
public void remove(T obj) {
int bitNum = map.getInt(obj);
bits[bitNum / 32] &= ~(1 << (bitNum % 32));
}
public void add(T obj) {
int bitNum = map.getInt(obj);
bits[bitNum / 32] |= 1 << (bitNum % 32);
}