80 lines
2.6 KiB
C++
80 lines
2.6 KiB
C++
//=======================================================================
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// Copyright 2002 Indiana University.
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// Authors: Andrew Lumsdaine, Lie-Quan Lee, Jeremy G. Siek
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//=======================================================================
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/* Expected Output
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0 1 2 3 4 5 6 7 8 9
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0 0 99 111 123 103 107 125 105 111 123
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1 99 0 12 24 4 8 26 6 12 24
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2 111 12 0 12 16 20 24 18 24 26
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3 123 24 12 0 28 30 12 30 26 14
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4 103 4 16 28 0 4 22 2 8 20
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5 107 8 20 30 4 0 18 6 4 16
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6 125 26 24 12 22 18 0 24 14 2
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7 105 6 18 30 2 6 24 0 10 22
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8 111 12 24 26 8 4 14 10 0 12
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9 123 24 26 14 20 16 2 22 12 0
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*/
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#include <boost/config.hpp>
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#include <fstream>
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#include <iostream>
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#include <vector>
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#include <iomanip>
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#include <boost/property_map/property_map.hpp>
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#include <boost/graph/adjacency_list.hpp>
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#include <boost/graph/graphviz.hpp>
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#include <boost/graph/johnson_all_pairs_shortest.hpp>
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int main()
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{
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using namespace boost;
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typedef adjacency_list<vecS, vecS, undirectedS, no_property,
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property< edge_weight_t, int,
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property< edge_weight2_t, int > > > Graph;
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const int V = 10;
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typedef std::pair < int, int >Edge;
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Edge edge_array[] =
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{ Edge(0,1), Edge(1,2), Edge(2,3), Edge(1,4), Edge(2,5), Edge(3,6),
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Edge(4,5), Edge(5,6), Edge(4,7), Edge(5,8), Edge(6,9), Edge(7,8),
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Edge(8,9)
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};
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const std::size_t E = sizeof(edge_array) / sizeof(Edge);
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Graph g(edge_array, edge_array + E, V);
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property_map < Graph, edge_weight_t >::type w = get(edge_weight, g);
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int weights[] = { 99, 12, 12, 4, 99, 12, 4, 99, 2, 4, 2, 99, 12 };
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int *wp = weights;
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graph_traits < Graph >::edge_iterator e, e_end;
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for (boost::tie(e, e_end) = edges(g); e != e_end; ++e)
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w[*e] = *wp++;
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std::vector < int >d(V, (std::numeric_limits < int >::max)());
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int D[V][V];
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johnson_all_pairs_shortest_paths(g, D, distance_map(&d[0]));
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std::cout << std::setw(5) <<" ";
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for (int k = 0; k < 10; ++k)
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std::cout << std::setw(5) << k ;
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std::cout << std::endl;
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for (int i = 0; i < 10; ++i) {
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std::cout <<std::setw(5) << i ;
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for (int j = 0; j < 10; ++j) {
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std::cout << std::setw(5) << D[i][j] ;
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}
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std::cout << std::endl;
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}
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return 0;
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}
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