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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. void dfsVisit (vector<vector<int>>& graph, vector<bool>& visited, int current,vector<int>& discTime,vector<int>& finishTime,int &t,int arr[],int &k){
  5.  
  6. 	visited [current] = true;
  7. 	arr[k]=current;
  8. 	k++;
  9. 	discTime[current]=++t;
  10.     for(int i=0; i<graph.size(); i++){
  11. 		if(graph[current][i]==1 && visited[i]==false)
  12. 			dfsVisit(graph, visited, i,discTime,finishTime,t,arr,k);
  13. 	}
  14. 	finishTime[current]=++t;
  15. }
  16.  
  17. void dfs(vector<vector<int>>& graph, vector<bool>& visited,vector<int>& discTime,vector<int>& finishTime,int &t,int arr[],int &k){
  18. 	for(int i=0; i<graph.size(); i++){
  19. 		if(visited[i]==false)
  20. 			dfsVisit(graph, visited, i,discTime,finishTime,t,arr,k);
  21. 	}
  22. }
  23.  
  24. int main() {
  25.  
  26. 	int n; 
  27. 	cout << "Enter the number of nodes: " << endl;
  28. 	cin >> n;
  29. 	// defining the adjacency matrix
  30.  
  31. 	vector<vector<int>> graph (n,vector<int>(n,0));
  32.  
  33. 	// creating the adjacency matrix
  34. 	for(int i=0; i<n; i++){
  35. 		for(int j=0; j<n; j++)
  36. 			cin >> graph[i][j];
  37. 	}
  38. 	vector<bool> visited (n, false);
  39. 	vector<int> discTime (n, 0);
  40. 	vector<int> finishTime (n, 0);
  41. 	int t=0,k=0;
  42. 	int arr[n];
  43.  
  44. 	cout << "DFS Traversal Sequence: " << endl;
  45. 	dfs(graph,visited,discTime,finishTime,t,arr,k);
  46. 	for(int i=0;i<n;i++){
  47.         cout<<"Node: "<< arr[i]<<"-->"<<discTime[arr[i]]<<"--"<<finishTime[arr[i]]<<endl;
  48. 	}
  49. 	return 0;
  50. }
  51.  
Success #stdin #stdout 0.01s 5280KB
comments (?)
stdin
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8
0 0 0 1 0 0 0 1
0 0 0 0 1 0 0 0
0 0 0 0 0 0 1 0
1 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
1 0 0 0 0 0 0 0
0 1 0 0 0 1 0 1
0 0 0 0 1 1 0 0
stdout
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Enter the number of nodes: 
DFS Traversal Sequence: 
Node: 0-->1--10
Node: 3-->2--3
Node: 7-->4--9
Node: 4-->5--6
Node: 5-->7--8
Node: 1-->11--12
Node: 2-->13--16
Node: 6-->14--15
https://ideone.com/3yRjIn
language:
C++14 (gcc 8.3)
created:
17 days ago
visibility:
public

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