数据结构实验之图论二：图的深度遍历-java代码

 1 import java.util.Scanner;
 2 
 3 public class Main {
 4 
 5     public static int[] visit = new int[1000];
 6     public static int[][] map = new int[1000][1000];
 7 
 8     public static void main(String[] args) {
 9         Scanner input = new Scanner(System.in);
10         int T = input.nextInt();
11         for (int x = 0; x < T; x++) {
12             int n = input.nextInt(), m = input.nextInt();
13             for (int i = 0; i <n; i++) {
14                 for(int j=0;j<n;j++)
15                 map[i][j] = 0;
16                 visit[i] = 0;
17             }
18             for (int i = 0; i < m; i++) {
19                 int a = input.nextInt();
20                 int b = input.nextInt();
21                 map[a][b] = map[b][a] = 1;
22             }
23             System.out.print(0);
24             DFS(0, n);
25             System.out.println();
26         }
27     }
28 
29     public static void DFS(int temp, int m) {
30         visit[temp] = 1;
31         for (int i = 0; i <m; i++) {
32             if (visit[i] == 0 && map[temp][i] == 1) {
33                 System.out.print(" " + i);
34                 DFS(i, m);
35             }
36         }
37     }
38 }