标签:code 判断 lse namespace pre 矩阵 main 算法 开始
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int i, j, m, a, b;
cin >> n >> m;
//初始化二维矩阵
for (i = 1; i <= n; i++)
for (j = 1; j <= n; j++)
if (i == j)e[i][j] = 0;
else e[i][j] = 0x3f;
//读入顶点之间的边
for (i = 1; i <= m; i++)
{
cin >> a >> b;
e[a][b] = 1;
e[b][a] = 1; //无向图需要将其对应的点的左边也赋值为1
}
void dfs(int cur)
{
int i;
cout << cur << " ";
sum++;//每访问一个节点sum就++
if (sum == n)return;//所有的顶点已经访问过直接退出
for (int i = 1; i <= n; i++)
{
//判断当前顶点cur到顶点i是否有边,并判断顶点i是否已经访问过
if (e[cur][i] == 1 && book[i] == 0)
{
book[i] = 1;
dfs(i);
}
}
return;
}
#include <iostream>
#include <cstdio>
using namespace std;
int book[101], sum, n, e[101][101];
void dfs(int cur)
{
int i;
cout << cur << " ";
sum++;//没访问一个节点sum就++
if (sum == n)return;//所有的顶点已经访问过直接退出
for (int i = 1; i <= n; i++)
{
//判断当前顶点cur到顶点i是否有边,并判断顶点i是否已经访问过
if (e[cur][i] == 1 && book[i] == 0)
{
book[i] = 1;
dfs(i);
}
}
return;
}
int main()
{
int i, j, m, a, b;
cin >> n >> m;
//初始化二维矩阵
for (i = 1; i <= n; i++)
for (j = 1; j <= n; j++)
if (i == j)e[i][j] = 0;
else e[i][j] = 0x3f;
//读入顶点之间的边
for (i = 1; i <= m; i++)
{
cin >> a >> b;
e[a][b] = 1;
e[b][a] = 1; //无向图需要将其对应的点的左边也赋值为1
}
//从顶点1出发
book[1] = 1;//标记一号顶点已经被访问
dfs(1);//从1号顶点开始遍历
system("pause");
return 0;
}
标签:code 判断 lse namespace pre 矩阵 main 算法 开始
原文地址:https://www.cnblogs.com/wlw-x/p/11509384.html