class SimpleBitSet {

    public boolean hasSetBits() {
        boolean anyBitsSet = false;
        for (int i = 0; i < numWords; i++) {
            anyBitsSet = anyBitsSet || (words[i] != 0);
            if (anyBitsSet) {
                break;
            }
        }
        return anyBitsSet;
    }

    public  SimpleBitSet(int nBits);

}