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理论与实践没有很好结合的结果,看来党的保先是很有必要的~~~~

Posted by xemoaya at 2005-10-03 00:58:12 on Problem 2623
In Reply To:qsort 为什么又不会超呢?费解。O(n^2)啊 Posted by:Judas at 2005-10-02 14:36:19
归并排序虽然是o(nlogn),但是因为频繁作数据读写操作(归并的时候把一半的数据
写到buffer中去),所以速度是很慢的,远慢于同样是o(nlongn)的堆排序。而qsort
只不过是最坏情况是o(n^2),平均起来却是最快的,要不怎么叫快速排序?兄弟一定
没学过数据结构吧?

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