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我用的是求最大矩形和的办法，所以N^3，你的方法为什么不需要从第二，三····开始？？In Reply To:我的应该算O(N^2)吧,二维降为一维,不过这过程只需从第一行开始,不需再从第二,三行开始了,所以时间就从O(N^3)降到O(N^2)了 Posted by:windbells at 2004-11-03 14:10:47 Followed by: Post your reply here: |
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