考虑以下方法:privatestaticlongmaskAndNegate(longl){intnumberOfLeadingZeros=Long.numberOfLeadingZeros(l)longmask=CustomBitSet.masks[numberOfLeadingZeros];longresult=(~l)&mask;returnresult;}该方法可以简写为:privatestaticlongmaskAndNegate(longl){return(~l)&CustomBitSet.masks[Long.numberOfLeadingZeros(l)];}这两种表示在