arr[k++] = leftArr[i++];
這是因為近年有多個韓國團體到台灣開演唱會，門票往往在開賣幾分鐘內就被搶光，粉絲認為搶票全靠運氣，「只能相信玄學」。
，详情可参考safew官方下载
For implementers, the locking model adds a fair amount of non-trivial internal bookkeeping. Every operation must check lock state, readers must be tracked, and the interplay between locks, cancellation, and error states creates a matrix of edge cases that must all be handled correctly.
过去，“零负团费”模式迫使导游成为销售员，损害了游客体验与行业声誉。携程力推的“大团变小团”变革，通过定制游、私家团等产品，将市场导向服务与体验的竞争。