题目描述: 输入一个简单无向图,求出图中连通块的数目 输入: 输入的第一行包含两个整数n和m,n是图的顶点数,m是边数.1<=n<=1000,0<=m<=10000. 以下m行,每行是一个数对v y,表示存在边(v,y).顶点编号从1开始. 题目分析: 利用深度优先搜索寻找连通块数,一趟深度优先搜索为一个连通块,深度优先搜索次数为块数. #include<iostream> #include<memory> using namespace std; cons…

题目介绍: 输入一个简单无向图,求出图中连通块的数目. Input 输入的第一行包含两个整数n和m,n是图的顶点数,m是边数.1<=n<=1000,0<=m<=10000. 以下m行,每行是一个数对v y,表示存在边(v,y).顶点编号从1开始. Output 单独一行输出连通块的数目. Sample Input 5 3 1 2 1 3 2 4 Sample Output 2 思路: 利用广度搜索,计算广度搜索的次数即为结果. 具体代码如下: #include <iostre…

题意:求图中的连通块数,注意孤立的算自连通! 例如:6个顶点3条路径,其中路径为:1->2    4->5  1->3 那么有(1-2&&1->3) + (4->5) + (6) 共3个连通块! 解法:对每个节点宽搜! #include<iostream> #include<memory.h> #include<queue> using namespace std; ][]; ]; int N,M; int main(){…

Given n nodes labeled from 0 to n - 1 and a list of undirected edges (each edge is a pair of nodes), write a function to find the number of connected components in an undirected graph. Example 1: 0          3 |          | 1 --- 2    4 Given n = 5 and…

原题链接在这里:https://leetcode.com/problems/number-of-connected-components-in-an-undirected-graph/ 题目: Given n nodes labeled from 0 to n - 1 and a list of undirected edges (each edge is a pair of nodes), write a function to find the number of connected com…

Number of Connected Components in an Undirected Graph Given n nodes labeled from 0 to n - 1 and a list of undirected edges (each edge is a pair of nodes), write a function to find the number of connected components in an undirected graph. Example 1:…

Given n nodes labeled from 0 to n - 1 and a list of undirected edges (each edge is a pair of nodes), write a function to find the number of connected components in an undirected graph. Example 1: 0          3 |          | 1 --- 2    4 Given n = 5 and…

［抄题］: Given n nodes labeled from 0 to n - 1 and a list of undirected edges (each edge is a pair of nodes), write a function to find the number of connected components in an undirected graph. Example 1: Input: n = 5 and edges = [[0, 1], [1, 2], [3, 4]…

原题链接在这里:https://leetcode.com/problems/number-of-connected-components-in-an-undirected-graph/ 题目: Given n nodes labeled from 0 to n - 1 and a list of undirected edges (each edge is a pair of nodes), write a function to find the number of connected com…

Given n nodes labeled from 0 to n - 1 and a list of undirected edges (each edge is a pair of nodes), write a function to find the number of connected components in an undirected graph. Example 1: Input: n = 5 and edges = [[0, 1], [1, 2], [3, 4]] 0 3…