import java.util.BitSet; public class BitSetPerformanceOptimization { public static void main(String[] args) { int size = 1000000; BitSet bitSet = new BitSet(size); // ... LongBitSet longBitSet = new LongBitSet(size); // ... RoaringBitmap roaringBitmap = new RoaringBitmap(); // ... } }


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