标识      *       * @param i     the value of the element      * @param i     元素值      *       * @param iBit  bit number       * @param iBit  第几位      *       * @return      int, >0:marked, =0:no mark, <0:outof range      * @return      int, >0:有标识, =0:无标识, <0:超过范围      *       */     int 