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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. void bfs(vector<vector<int>> &adj, int s) {
  5. 	queue<int> q;
  6. 	vector<bool> visited(adj.size(), false);
  7. 	visited[s] = true;
  8. 	q.push(s);
  9. 	while(!q.empty()){
  10. 		int curr = q.front();
  11. 		q.pop();
  12. 		cout<<curr<<" ";
  13. 		for(int x : adj[curr]){
  14. 			if(!visited[x]) {
  15. 				visited[x] = true;
  16. 				q.push(x);
  17. 			}
  18. 		}
  19. 	}
  20. }
  21.  
  22. int main() {
  23. 	int n = 5;
  24. 	vector<vector<int>> adj(n);
  25. 	adj[0].push_back(1);
  26. 	adj[0].push_back(2);
  27. 	adj[1].push_back(0);
  28. 	adj[1].push_back(2);
  29. 	adj[2].push_back(3);
  30. 	adj[2].push_back(4);
  31. 	adj[3].push_back(4);
  32. 	adj[3].push_back(1);
  33. 	adj[4].push_back(3);
  34. 	adj[4].push_back(2);
  35. 	bfs(adj,0);
  36. 	return 0;
  37. }
Success #stdin #stdout 0.01s 5280KB
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https://ideone.com/qzLImk
language:
C++14 (gcc 8.3)
created:
2 days ago
visibility:
public

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