Java使用BitSet做大数据量查重复
That's what I look for a long time. May used in Bloom Filter.
public static void main(String[] args) throws ParseException {
BitSet bit = new BitSet (100); bit.set(1); bit.set(10); BitSet anBit = new BitSet(); anBit.set(10); anBit.set(5); //bit.and(anBit); bit.or(anBit); for(int i=0; i<bit.length(); i++)
{ System.out.println(bit.get(i));
} 
}results:
false
true
false
false
false
true
false
false
false
false
true