right = right << 31 | right >>> 1;
        work = (leftt ^ right) & 0xaaaaaaaa;
        leftt ^= work;
        right ^= work;
        leftt = leftt << 31 | leftt >>> 1;
        work = (leftt >>> 8 ^ right) & 0x00ff00ff;
        right ^= work;
        leftt ^= work << 8;
        work = (leftt >>> 2 ^ right) & 0x33333333;
        right ^= work;
        leftt ^= work << 2;
        work = (right >>> 16 ^ leftt) & 0x0000ffff;