| 1. | More efficient , though - especially when sorting a million items at a time , as is common in bioscience , finance , and other domains - is to go to the trouble of creating a special - purpose " reverse table . " while this operation takes time , it allows the sorting to be very fast 更加有效特别是每次对一百万项进行排序时,这在生物科学、金融和其它一些领域很常见就要专门创建专用的“反向表” 。尽管这项操作很耗时,但是它使排序变得非常快速。 |