对n个元素进行快速排序时，最坏情况下的时间复杂度为（）.

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='30195' and id < 2447120 and id<>'2447120' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30195' and id > 2447120 and id<>'2447120' order by id asc limit 5