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Re:Output a shortest sorted sequence of moves (numbers),请问这题是求长度最短还是字典序最小的序列?In Reply To:Output a shortest sorted sequence of moves (numbers),请问这题是求长度最短还是字典序最小的序列? Posted by:majia9 at 2009-08-08 11:35:05 > Output a shortest sorted sequence of moves (numbers) > 请问这题是求长度最短还是字典序最小的序列? > > 3 2 3 > 1 0 2 > 3 2 3 > 我以为是求长度最短的, > 但这组数据,答案是1 1 1 2 2 2 3 3 4 4 4 5 5 7 7 7 8 8 8 9 9 > 我算出了更短的1 2 2 2 4 4 4 7 8 8 8 > > 题意到底是什么呀? 先满足长度。。再满足字典序 BFS肯定能找出最短。 至于字典序取决于扩展结点的顺序 有可能你的步驟有误 Followed by: Post your reply here: |
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