Last change
on this file since 407:e34e1bc610cf was
8:cd54905012bc,
checked in by Alpar Juttner, 20 years ago

New test: bfsdemo2.cc added
 Graph class has a NodeMap? and an EdgeMap? member class
 default_bfs_T uning the above Maps is added
 a (property)map must provide a member function SetG() to attach the map
to a graph

File size:
987 bytes

Line  

1  #include <iostream> 

2  #include <graph.h> 

3  #include <bfs.h> 

4  

5  using namespace NEGRO; 

6  using namespace std; 

7  

8  typedef Graph<int,int> TestGraph; 

9  

10  int gcd(int a,int b) {int c; while((c=a%b)) {a=b;b=c;} ; return b;} 

11  

12  int main() 

13  { 

14  TestGraph G; 

15  

16  TestGraph::NodeIterator tn,n2; 

17  

18  cout << "Create nodes\n"; 

19  

20  for(int i=1;i<=500;i++) 

21  { 

22  *(tn=G.AddNode())=i; 

23  if(i==2) n2=tn; 

24  } 

25  

26  cout << "Create Edges\n"; 

27  

28  for(TestGraph::NodeIterator n(G);n.isValid();++n) 

29  for(TestGraph::NodeIterator m(G);m.isValid();++m) if(n!=m) 

30  if(gcd(*n,*m)>1) G.AddEdge(n,m); 

31  

32  

33  cout << "Run BFS\n"; 

34  

35  Bfs<default_bfs_T<TestGraph> > bfs; 

36  

37  bfs.SetG(G); 

38  bfs.Init(n2); 

39  bfs.Run(); 

40  

41  for(TestGraph::NodeIterator n(G);n.isValid();++n) 

42  if((*n)!=2) 

43  cout << (Get(bfs.dist_map,n)) << '\n'; 

44  

45  for(TestGraph::NodeIterator n(G);n.isValid();++n) 

46  if(Get(bfs.dist_map,n)) 

47  cout << *(Get(bfs.tree_map,n).From()) << ">" 

48  << *(Get(bfs.tree_map,n).To()) 

49  << '\n'; 

50  } 

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