93 lines
2.6 KiB
C++
93 lines
2.6 KiB
C++
//=======================================================================
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// Copyright 1997, 1998, 1999, 2000 University of Notre Dame.
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// Copyright 2004 Trustees of Indiana University
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// Authors: Andrew Lumsdaine, Lie-Quan Lee, Jeremy G. Siek, Douglas Gregor
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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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#include <boost/config.hpp>
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#include <iostream>
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#include <algorithm>
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#include <boost/graph/adjacency_list.hpp>
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#include <boost/property_map/property_map.hpp>
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#include <string>
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using namespace std;
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using namespace boost;
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/*
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Interior Property Map Basics
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An interior property map is a way of associating properties
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with the vertices or edges of a graph. The "interior" part means
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that the properties are stored inside the graph object. This can be
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convenient when the need for the properties is somewhat permanent,
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and when the properties will be with a graph for the duration of its
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lifetime. A "distance from source vertex" property is often of this
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kind.
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Sample Output
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Jeremy owes Rich some money
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Jeremy owes Andrew some money
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Jeremy owes Jeff some money
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Jeremy owes Kinis some money
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Andrew owes Jeremy some money
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Andrew owes Kinis some money
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Jeff owes Jeremy some money
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Jeff owes Rich some money
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Jeff owes Kinis some money
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Kinis owes Jeremy some money
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Kinis owes Rich some money
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*/
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template <class EdgeIter, class Graph>
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void who_owes_who(EdgeIter first, EdgeIter last, const Graph& G)
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{
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while (first != last) {
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cout << G[source(*first, G)].first_name << " owes "
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<< G[target(*first, G)].first_name << " some money" << endl;
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++first;
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}
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}
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struct VertexData
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{
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string first_name;
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};
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int
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main()
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{
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{
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// Create the graph, and specify that we will use std::string to
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// store the first name's.
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typedef adjacency_list<vecS, vecS, directedS, VertexData> MyGraphType;
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typedef pair<int,int> Pair;
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Pair edge_array[11] = { Pair(0,1), Pair(0,2), Pair(0,3), Pair(0,4),
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Pair(2,0), Pair(3,0), Pair(2,4), Pair(3,1),
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Pair(3,4), Pair(4,0), Pair(4,1) };
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MyGraphType G(5);
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for (int i=0; i<11; ++i)
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add_edge(edge_array[i].first, edge_array[i].second, G);
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G[0].first_name = "Jeremy";
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G[1].first_name = "Rich";
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G[2].first_name = "Andrew";
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G[3].first_name = "Jeff";
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G[4].first_name = "Doug";
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who_owes_who(edges(G).first, edges(G).second, G);
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}
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cout << endl;
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return 0;
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}
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