Last change
on this file since 997:665ffade9aca was
8:cd54905012bc,
checked in by Alpar Juttner, 21 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
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File size:
987 bytes
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1 | #include <iostream> |
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2 | #include <graph.h> |
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3 | #include <bfs.h> |
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4 | |
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5 | using namespace NEGRO; |
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6 | using namespace std; |
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7 | |
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8 | typedef Graph<int,int> TestGraph; |
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9 | |
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10 | int gcd(int a,int b) {int c; while((c=a%b)) {a=b;b=c;} ; return b;} |
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11 | |
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12 | int main() |
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13 | { |
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14 | TestGraph G; |
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15 | |
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16 | TestGraph::NodeIterator tn,n2; |
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17 | |
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18 | cout << "Create nodes\n"; |
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19 | |
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20 | for(int i=1;i<=500;i++) |
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21 | { |
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22 | *(tn=G.AddNode())=i; |
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23 | if(i==2) n2=tn; |
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24 | } |
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25 | |
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26 | cout << "Create Edges\n"; |
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27 | |
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28 | for(TestGraph::NodeIterator n(G);n.isValid();++n) |
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29 | for(TestGraph::NodeIterator m(G);m.isValid();++m) if(n!=m) |
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30 | if(gcd(*n,*m)>1) G.AddEdge(n,m); |
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31 | |
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32 | |
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33 | cout << "Run BFS\n"; |
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34 | |
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35 | Bfs<default_bfs_T<TestGraph> > bfs; |
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36 | |
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37 | bfs.SetG(G); |
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38 | bfs.Init(n2); |
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39 | bfs.Run(); |
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40 | |
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41 | for(TestGraph::NodeIterator n(G);n.isValid();++n) |
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42 | if((*n)!=2) |
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43 | cout << (Get(bfs.dist_map,n)) << '\n'; |
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44 | |
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45 | for(TestGraph::NodeIterator n(G);n.isValid();++n) |
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46 | if(Get(bfs.dist_map,n)) |
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47 | cout << *(Get(bfs.tree_map,n).From()) << "->" |
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48 | << *(Get(bfs.tree_map,n).To()) |
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49 | << '\n'; |
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50 | } |
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