文心一言 VS 讯飞星火 VS chatgpt (336)—— 算法导论23.1 5题

文心一言5mos agoupdate lida
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五、设$e$为连通图$G=(V,E)$的某条环路上权重最大的边。证明:图$G=(V,E-{e})$中存在一棵最小生成树,它也同时是$G$的最小生成树。也就是说,图$G$中存在一棵不包含边$e$的最小生成树。如果要写代码,请用go语言。

文心一言:

要证明在连通图$G=(V,E)$中,如果$e$是某条环路上权重最大的边,则图$G=(V,E-{e})$中存在一棵最小生成树,这棵生成树同时也是$G$的最小生成树,我们可以按照以下步骤进行:

证明步骤

1. 假设存在性: 假设$T$是$G$的一棵最小生成树。2. 考虑边$e$在$T$中的情况• 如果$e \notin T$,则$T$也是$G$的一棵最小生成树,因为$T$的所有边都在$G$中。• 如果$e \in T$,由于$e$位于某个环路上,我们可以找到$T$中一条与$e$形成环路的边$f$(即存在路径$P$,使得$P \cup {e}$形成环路,且$f \in P$)。3. **替换边$e$为边$f$**:• 由于$e$是环路上的最大权重边,因此$w(f)

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