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  • 图的遍历

    #include<iostream>
    #include<cstdio>
    #include<cstring>
    
    using namespace std;
    #define N 110
    
    typedef struct{
        char vexs[N];
        int edge[N][N];
        int n, e;
    }matrix_graph;
    
    int vis[N], cnt;
    
    void creatMG(matrix_graph &g)
    {
        int u, v;
        scanf("%d%d", &g.n, &g.e);
        getchar();
        for(int i=1; i<=g.n; i++)
            for(int j=1; j<g.n; j++)
            g.edge[i][j]=0;
        for(int i=0; i<g.n; i++)
            scanf("%c", &g.vexs[i]);
        getchar();
        for(int i=0; i<g.e; i++)
        {
            scanf("%d%d", &u, &v);
            g.edge[u][v]=g.edge[v][u]=1;
        }
    }
    
    void DFS(matrix_graph g, int u)
    {
        vis[u]=1;
        for(int i=1; i<=g.n; i++)
        {
            if(!vis[i]&&g.edge[u][i])
                DFS(g, i);
        }
    }
    
    void DFSM(matrix_graph g)
    {
        for(int i=1; i<=g.n; i++)
        if(!vis[i])
        {
            cnt++;
            DFS(g, i);
        }
    }
    
    int main()
    {
        matrix_graph g;
        memset(vis, 0, sizeof(vis));
        cnt=0;
        creatMG(g);
        DFSM(g);
        printf("%d
    ", cnt);
        return 0;
    }
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  • 原文地址:https://www.cnblogs.com/9968jie/p/6110948.html
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