src/work/jacint/dijkstra.cc
author marci
Wed, 17 Mar 2004 16:10:33 +0000
changeset 196 8a9b9360463e
parent 170 9091b1ebca27
child 211 9222a9b8b323
permissions -rw-r--r--
.
     1 #include <iostream>
     2 #include <fstream>
     3 
     4 #include <list_graph.hh>
     5 #include <dimacs.hh>
     6 #include <dijkstra.h>
     7 #include <time_measure.h>
     8 
     9 #include <bin_heap.hh>
    10 #include <fib_heap.h>
    11 
    12 using namespace hugo;
    13 
    14 int main(int, char **) {
    15   typedef ListGraph::NodeIt NodeIt;
    16   typedef ListGraph::EachNodeIt EachNodeIt;
    17   typedef ListGraph::InEdgeIt InEdgeIt; 
    18 
    19   ListGraph G;
    20   NodeIt s, t;
    21   ListGraph::EdgeMap<int> cap(G);
    22   readDimacsMaxFlow(std::cin, G, s, t, cap);
    23 
    24   std::cout << "dijkstra demo ..." << std::endl;
    25   
    26   double pre_time=currTime();
    27     Dijkstra<ListGraph, int, FibHeap<ListGraph::NodeIt, int, 
    28     ListGraph::NodeMap<int> > > dijkstra_test(G, s, cap);
    29     dijkstra_test.run();
    30   double post_time=currTime();
    31     
    32   std::cout << "running time with fib_heap: " 
    33 	    << post_time-pre_time << " sec"<< std::endl; 
    34  
    35   pre_time=currTime();
    36   Dijkstra<ListGraph, int, BinHeap<ListGraph::NodeIt, int, 
    37     ListGraph::NodeMap<int> > > dijkstra_test2(G, s, cap);
    38   dijkstra_test2.run();
    39   post_time=currTime();
    40   
    41   std::cout << "running time with bin_heap: " 
    42 	    << post_time-pre_time << " sec"<< std::endl; 
    43   
    44 
    45   int hiba_fib=0;
    46   int hiba_bin=0;
    47   EachNodeIt u;
    48   for ( G.getFirst(u) ; G.valid(u); G.next(u) ) {
    49     InEdgeIt e;
    50     for ( G.getFirst(e,u); G.valid(e); G.next(e) ) {
    51       NodeIt v=G.tail(e);
    52       if ( dijkstra_test.dist(u) - dijkstra_test.dist(v) > cap.get(e) )
    53 	{
    54 	  std::cout<<"Hibas el a fibonaccis Dijkstraban: " 
    55 		   << dijkstra_test.dist(u) - dijkstra_test.dist(v) - 
    56 	    cap.get(e)<<std::endl;
    57 	  ++hiba_fib;
    58 	}
    59       if ( dijkstra_test2.dist(u) - dijkstra_test2.dist(v) > cap.get(e) )
    60 	{
    61 	  std::cout<<"Hibas el a binarisos Dijkstraban: " 
    62 		   << dijkstra_test2.dist(u) - dijkstra_test2.dist(v) - 
    63 	    cap.get(e)<<std::endl;
    64 	  ++hiba_bin;
    65 	}
    66       if ( e==dijkstra_test.pred(u) && 
    67 	   dijkstra_test.dist(u) - dijkstra_test.dist(v) != cap.get(e) )
    68 	{
    69 	  std::cout<<"Hibas fael a fibonaccis Dijkstraban: "<<
    70 	    dijkstra_test.dist(u) - dijkstra_test.dist(v)- cap.get(e)<<std::endl;
    71 	  ++hiba_fib;
    72 	}
    73       if ( e==dijkstra_test2.pred(u) && 
    74 	   dijkstra_test2.dist(u) - dijkstra_test2.dist(v) != cap.get(e) )
    75 	{
    76 	  std::cout<<"Hibas fael a binarisos Dijkstraban: "<<
    77 	    dijkstra_test2.dist(u) - dijkstra_test2.dist(v)- cap.get(e)<<std::endl;
    78 	  ++hiba_bin;
    79 	}
    80     }
    81  
    82     if ( dijkstra_test.dist(u) != dijkstra_test2.dist(u) ) 
    83       std::cout << "Nem egyezik meg a tavolsag!"<<std::endl;
    84 
    85 
    86  }
    87 
    88   std::cout << "Hibas elek szama a fibonaccis Dijkstraban: " 
    89 	    << hiba_fib << " a " << G.edgeNum() <<"-bol."<< std::endl;
    90 
    91   std::cout << "Hibas elek szama a binarisos Dijkstraban: " 
    92 	    << hiba_bin << " a " << G.edgeNum() <<"-bol."<< std::endl;
    93 
    94 
    95 
    96 
    97   return 0;
    98 }