【单选题】【消耗次数:1】
设无向图G中有n个顶点,则该无向图的最小生成树上有()条边。
n
n-1
2n
2n-1
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相关题目
【单选题】 设无向图的顶点个数为n,则该图最多有( )条边。
①  n-1
②  n(n-1)/2
③  n(n+1)/2
④  n+1
【多选题】 设 G 是 n (n32)阶 n + 1 条边的无向简单连通图, 则以下哪些性质正确:
①  存在顶点 v, d(v)33;
②  所以顶点度数之和等于2(n + 1);
③  至少有两个顶点不是割点;
④  奇度顶点个数可以不是偶数个。
【判断题】 设n阶无向连通图G有m条边,则mn-1。
①  正确
②  错误
【单选题】 设 G 是 n (n32)阶 n + 1 条边的无向简单连通图, 则以下哪个性质不正确:
①  存在顶点 v, d(v)33;
②  所以顶点度数之和等于2(n + 1);
③  至少有两个顶点不是割点;
④  奇度顶点个数可以不是偶数个。
【单选题】 设 G 是 n (n32)阶 n + 1 条边的无向简单连通图, 则以下哪个性质正确:
①  存在顶点 v, d(v)32;
②  存在顶点 v, d(v)33;
③  存在顶点 v, d(v)34;
④  存在顶点 v, d(v)35。
【单选题】 设某无向图中有n个顶点e条边,则建立该图邻接表的时间复杂度为()。
①  O(n+e)
②  O(n2)
③  O(ne)
④  O(n3)
【单选题】 设某无向图中有n个顶点e条边,则该无向图中所有顶点的入度之和为()。
①  n
②  e
③  2n
④  2e
【简答题】 n个顶点的无向完全图,共有多少条边?
【单选题】 设完全无向图中有n个顶点,则该完全无向图中有()条边。
①  n(n-1)/2
②  n(n-1)
③  n(n+1)/2
④  (n-1)/2
【判断题】 在n个结点的无向图中,若边数大于n-1,则该图必是连通图。
①  正确
②  错误
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