src/work/johanna/kruskal_test.cc
author jacint
Sat, 20 Mar 2004 20:06:23 +0000
changeset 220 7deda4d6a07a
parent 150 4b5210aa0239
child 246 dc95ca4ebc7b
permissions -rw-r--r--
*** empty log message ***
     1 #include <string>
     2 #include <iostream>
     3 #include <map>
     4 
     5 #include <kruskal.h>
     6 #include <list_graph.h>
     7 
     8 
     9 using namespace std;
    10 using namespace hugo;
    11 
    12 class string_int_map : public map<string,int> {
    13 public:
    14   int get(const string &s) {
    15     // Bocs, ez igy gaaaany, de nem volt kedvem utananezni, hogy
    16     // hogy is mukodik ez a map :)
    17     if( count(s) == 0 ) {
    18       operator[](s) = -1;
    19     }
    20     return operator[](s);
    21   }
    22   void set(const string &s, int i) {
    23       operator[](s) = i;
    24   }
    25 };
    26 
    27 
    28 // Egy olyan "map", ami nem tud semmit, csak a typedef-eket.
    29 // Valami elegansabb megoldas kene a Kruskalban...
    30 
    31 template <typename K, typename V>
    32 class DummyMap {
    33 public:
    34   typedef K KeyType;
    35   typedef V ValueType;
    36 };
    37 
    38 int main() {
    39 
    40   typedef ListGraph::Node Node;
    41   typedef ListGraph::Edge Edge;
    42   typedef ListGraph::NodeIt NodeIt;
    43   typedef ListGraph::EdgeIt EdgeIt;
    44 
    45   ListGraph G;
    46 
    47   Node s=G.addNode();
    48   Node v1=G.addNode();
    49   Node v2=G.addNode();
    50   Node v3=G.addNode();
    51   Node v4=G.addNode();
    52   Node t=G.addNode();
    53   
    54   Edge e1 = G.addEdge(s, v1);
    55   Edge e2 = G.addEdge(s, v2);
    56   Edge e3 = G.addEdge(v1, v2);
    57   Edge e4 = G.addEdge(v2, v1);
    58   Edge e5 = G.addEdge(v1, v3);
    59   Edge e6 = G.addEdge(v3, v2);
    60   Edge e7 = G.addEdge(v2, v4);
    61   Edge e8 = G.addEdge(v4, v3);
    62   Edge e9 = G.addEdge(v3, t);
    63   Edge e10 = G.addEdge(v4, t);
    64 
    65   typedef ListGraph::EdgeMap<double> ECostMap;
    66   typedef ListGraph::EdgeMap<bool> EBoolMap;
    67 
    68   ECostMap edge_cost_map(G, 2);
    69   EBoolMap tree_map(G);
    70   
    71   typedef MinCostTreeKruskal<ListGraph, ECostMap, EBoolMap> MCTK;
    72 
    73   MCTK mctk(G, edge_cost_map, tree_map);
    74   double k0lts = mctk.run();
    75 
    76   cout << "Uniform 2-es koltseggel: " << k0lts << endl;
    77 
    78   // Max koltsegu fa szamitasa elore megrendezett koltseg vektorbol:
    79   typedef MinCostTreeKruskal<ListGraph, DummyMap<Edge,int>, EBoolMap> MCTK2;
    80   MCTK2 mctk2(G, DummyMap<Edge,int>(), tree_map);
    81   MCTK2::EdgeCostVector ecv;
    82   ecv.push_back(make_pair(e1, 10));
    83   ecv.push_back(make_pair(e2, 9));
    84   ecv.push_back(make_pair(e3, 8));
    85   ecv.push_back(make_pair(e4, 7));
    86   ecv.push_back(make_pair(e5, 6));
    87   ecv.push_back(make_pair(e6, 5));
    88   ecv.push_back(make_pair(e7, 4));
    89   ecv.push_back(make_pair(e8, 3));
    90   ecv.push_back(make_pair(e9, 2));
    91   ecv.push_back(make_pair(e10, 1));
    92 
    93   k0lts = mctk2.run(ecv);
    94   cout << "Max koltsegu fa elore megrendezett koltseg vektorbol: 31 = "
    95        << k0lts << endl;
    96 
    97 
    98   return 0;
    99 }