数据l构W七章选择题[4]_跨考网
(tng) (tng) (tng) (tng) (tng) (tng) (tng) 1Q下面哪一Ҏ(gu)可以判断Z个有向图是否有环Q回路)(j)Q?a target="_blank">东北大学 2000 4?/span>2Q?/span>4分)(j)?/span> ?a target="_blank">合肥工业大学 2001 一?/span>2 Q?/span>2分)(j)?/span>
AQ深度优?/span> 遍历 (tng) B. 拓扑排序
(tng) (tng) (tng) C. 求最短\?/span> (tng) (tng) (tng) D. 求关键\?/span>
2. 在图采用L表存储时Q求最生成树(wi)?/span> Prim 法的时间复杂度?/span>( )?/span>
A. O(n) (tng) B. O(n+e) (tng) C. O(n2) (tng) D. O(n3)
(tng)
3. 下面是求q通网的最生成树(wi)?/span>prim法Q集?/span>VTQ?/span>ET分别N点和边,初始为( 1 Q,下面步骤重复n-1?/span>: aQ( 2 Q;bQ( 3 Q;最后:(x)Q?/span> 4 Q。?a target="_blank">南京理工大学 1997 一?/span>11_14 Q?/span>8分)(j)?/span>
Q?/span>1Q.AQ?/span>VTQ?/span>ET为空 (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) BQ?/span>VT为所有顶点,ET为空
(tng) (tng) (tng) (tng) (tng) (tng) CQ?/span>VT为网中Q意一点,ET为空 (tng) DQ?/span>VT为空Q?/span>ET为网中所有边
Q?/span>2Q.A. ?/span>i属于VTQ?/span>j不属?/span>VTQ且Q?/span>iQ?/span>jQ上的权最?/span>
(tng) (tng) (tng) (tng) (tng) (tng) BQ?/span>i属于VTQ?/span>j不属?/span>VTQ且Q?/span>iQ?/span>jQ上的权最?/span>
(tng) (tng) (tng) (tng) (tng) (tng) CQ?/span>i不属?/span>VTQ?/span>j不属?/span>VTQ且Q?/span>iQ?/span>jQ上的权最?/span>
(tng) (tng) (tng) (tng) (tng) (tng) DQ?/span>i不属?/span>VTQ?/span>j不属?/span>VTQ且Q?/span>iQ?/span>jQ上的权最?/span>
Q?/span>3Q.AQ顶?/span>i加入VTQ(i,jQ加?/span>ET
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) B. 点j加入VTQ(i,jQ加?/span>ET
(tng) (tng) (tng) (tng) (tng) (tng) C. 点j加入VTQ(i,jQ从ET中删?/span>
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) DQ顶?/span>i,j加入VTQ(i,jQ加?/span>ET
Q?/span>4Q.AQ?/span>ET 中ؓ(f)最生成树(wi)
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) BQ不?/span>ET中的Ҏ(gu)成最生成树(wi)
(tng) (tng) (tng) (tng) (tng) (tng) CQ?/span>ET中有n-1条边时ؓ(f)生成?wi),否则无?/span>
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) DQ?/span>ET中无回\Ӟ为生成树(wi)Q否则无?/span>
(tng)
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