src/work/athos/pf_demo.cc
author athos
Tue, 27 Jan 2004 16:23:51 +0000
changeset 36 7d539ea6ad26
child 77 69b2d279c8f0
permissions -rw-r--r--
preflow_push.hh: Preflow-push valtozat by athos
A tesztfile: pf_demo.cc
Kulon makefile is van.
     1 #include <iostream>
     2 #include <vector>
     3 #include <string>
     4 
     5 #include "marci_list_graph.hh"
     6 #include "marci_graph_traits.hh"
     7 #include "marci_property_vector.hh"
     8 #include "preflow_push.hh"
     9 
    10 using namespace marci;
    11 
    12 
    13 int main (int, char*[])
    14 {
    15   typedef graph_traits<list_graph>::node_iterator node_iterator;
    16   typedef graph_traits<list_graph>::edge_iterator edge_iterator;
    17   typedef graph_traits<list_graph>::each_node_iterator each_node_iterator;
    18   typedef graph_traits<list_graph>::each_edge_iterator each_edge_iterator;
    19   typedef graph_traits<list_graph>::out_edge_iterator out_edge_iterator;
    20   typedef graph_traits<list_graph>::in_edge_iterator in_edge_iterator;
    21   typedef graph_traits<list_graph>::sym_edge_iterator sym_edge_iterator;
    22 
    23   list_graph flow_test;
    24  
    25   
    26   //Ahuja könyv példája
    27   node_iterator s=flow_test.add_node();
    28   node_iterator v2=flow_test.add_node();
    29   node_iterator v3=flow_test.add_node();
    30   node_iterator v4=flow_test.add_node();
    31   node_iterator v5=flow_test.add_node();
    32   node_iterator t=flow_test.add_node();
    33   
    34   node_property_vector<list_graph, std::string> node_name(flow_test);
    35   node_name.put(s, "s");  
    36   node_name.put(v2, "v2");
    37   node_name.put(v3, "v3");
    38   node_name.put(v4, "v4");
    39   node_name.put(v5, "v5");
    40   node_name.put(t, "t");
    41 
    42   
    43   edge_iterator s_v2=flow_test.add_edge(s, v2);
    44   edge_iterator s_v3=flow_test.add_edge(s, v3);
    45   
    46   edge_iterator v2_v4=flow_test.add_edge(v2, v4);
    47   edge_iterator v2_v5=flow_test.add_edge(v2, v5);
    48 
    49   edge_iterator v3_v5=flow_test.add_edge(v3, v5);
    50 
    51   edge_iterator v4_t=flow_test.add_edge(v4, t);
    52   edge_iterator v5_t=flow_test.add_edge(v5, t);
    53   
    54   //Kis modositas
    55   edge_iterator v2_s=flow_test.add_edge(v2, s);
    56 
    57   edge_property_vector<list_graph, int> cap(flow_test);  
    58   cap.put(s_v2, 10);
    59   cap.put(s_v3, 10);
    60   cap.put(v2_v4, 5);
    61   cap.put(v2_v5, 8);
    62   cap.put(v3_v5, 5);
    63   cap.put(v4_t, 8);
    64   cap.put(v5_t, 8);
    65 
    66   //Kis modositas
    67   cap.put(v2_s, 100);
    68 
    69   //Kis modositas
    70   //edge_iterator t_s=flow_test.add_edge(t, s);
    71   //cap.put(t_s, 20);
    72 
    73   
    74   /*
    75   //Marci példája
    76   node_iterator s=flow_test.add_node();
    77   node_iterator v1=flow_test.add_node();
    78   node_iterator v2=flow_test.add_node();
    79   node_iterator v3=flow_test.add_node();
    80   node_iterator v4=flow_test.add_node();
    81   node_iterator t=flow_test.add_node();
    82   
    83   node_property_vector<list_graph, std::string> node_name(flow_test);
    84   node_name.put(s, "s");
    85   node_name.put(v1, "v1");
    86   node_name.put(v2, "v2");
    87   node_name.put(v3, "v3");
    88   node_name.put(v4, "v4");
    89   node_name.put(t, "t");
    90 
    91   edge_iterator s_v1=flow_test.add_edge(s, v1);
    92   edge_iterator s_v2=flow_test.add_edge(s, v2);
    93   edge_iterator v1_v2=flow_test.add_edge(v1, v2);
    94   edge_iterator v2_v1=flow_test.add_edge(v2, v1);
    95   edge_iterator v1_v3=flow_test.add_edge(v1, v3);
    96   edge_iterator v3_v2=flow_test.add_edge(v3, v2);
    97   edge_iterator v2_v4=flow_test.add_edge(v2, v4);
    98   edge_iterator v4_v3=flow_test.add_edge(v4, v3);
    99   edge_iterator v3_t=flow_test.add_edge(v3, t);
   100   edge_iterator v4_t=flow_test.add_edge(v4, t);
   101   
   102   edge_property_vector<list_graph, int> cap(flow_test);  
   103   cap.put(s_v1, 16);
   104   cap.put(s_v2, 13);
   105   cap.put(v1_v2, 10);
   106   cap.put(v2_v1, 4);
   107   cap.put(v1_v3, 12);
   108   cap.put(v3_v2, 9);
   109   cap.put(v2_v4, 14);
   110   cap.put(v4_v3, 7);
   111   cap.put(v3_t, 20);
   112   cap.put(v4_t, 4);
   113   */ 
   114   /*Egyszerű példa
   115   node_iterator s=flow_test.add_node();
   116   node_iterator v1=flow_test.add_node();
   117   node_iterator v2=flow_test.add_node();
   118   node_iterator t=flow_test.add_node();
   119   
   120   node_property_vector<list_graph, std::string> node_name(flow_test);
   121   node_name.put(s, "s");
   122   node_name.put(v1, "v1");
   123   node_name.put(v2, "v2");
   124   node_name.put(t, "t");
   125 
   126   edge_iterator s_v1=flow_test.add_edge(s, v1);
   127   edge_iterator v1_v2=flow_test.add_edge(v1, v2);
   128   edge_iterator v2_t=flow_test.add_edge(v2, t);
   129 
   130   edge_property_vector<list_graph, int> cap(flow_test); 
   131     
   132   cap.put(s_v1, 16);
   133   cap.put(v1_v2, 10);
   134   cap.put(v2_t, 4);
   135   */
   136 
   137   std::cout << "preflow-push algorithm test..." << std::endl;
   138   std::cout << "on directed graph graph" << std::endl; //<< flow_test;
   139   std::cout << "names and capacity values" << std::endl; 
   140   for(each_node_iterator i=flow_test.first_node(); i.valid(); ++i) { 
   141     std::cout << node_name.get(i) << ": ";
   142     std::cout << "out edges: ";
   143     for(out_edge_iterator j=flow_test.first_out_edge(i); j.valid(); ++j) 
   144       std::cout << node_name.get(flow_test.tail(j)) << "-"<< cap.get(j) << "->" << node_name.get(flow_test.head(j)) << " ";
   145     std::cout << "in edges: ";
   146     for(in_edge_iterator j=flow_test.first_in_edge(i); j.valid(); ++j) 
   147       std::cout << node_name.get(flow_test.tail(j)) << "-"<< cap.get(j) << "->" << node_name.get(flow_test.head(j)) << " ";
   148     std::cout << std::endl;
   149   }
   150 
   151   
   152   //for(each_node_iterator i=flow_test.first_node(); i.valid(); ++i) { 
   153   //  std::cout << i << " ";
   154   //}
   155   
   156   preflow_push<list_graph, int> preflow_push_test(flow_test, s, t, cap);
   157   cout << preflow_push_test.run()<<endl;
   158 
   159   //cap.put(v5_t, 9);
   160   //cout << preflow_push_test.run()<<endl;
   161 
   162   return 0;
   163 }
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