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//=======================================================================
// Copyright 2013 Maciej Piechotka
// Authors: Maciej Piechotka
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//=======================================================================
#include <boost/config.hpp>
#include <boost/graph/adjacency_list.hpp>
#include <boost/graph/edge_coloring.hpp>
#include <boost/graph/properties.hpp>
/*
Sample output
Colored using 5 colors
a-d: 4
a-f: 0
b-c: 2
b-e: 3
b-g: 1
b-j: 0
c-d: 0
c-e: 1
d-f: 2
d-i: 1
e-g: 4
f-g: 3
f-h: 1
g-h: 0
*/
int main(int, char *[])
{
using namespace boost;
using namespace std;
typedef adjacency_list<vecS, vecS, undirectedS, no_property, size_t, no_property> Graph;
typedef std::pair<std::size_t, std::size_t> Pair;
Pair edges[14] = { Pair(0,3), //a-d
Pair(0,5), //a-f
Pair(1,2), //b-c
Pair(1,4), //b-e
Pair(1,6), //b-g
Pair(1,9), //b-j
Pair(2,3), //c-d
Pair(2,4), //c-e
Pair(3,5), //d-f
Pair(3,8), //d-i
Pair(4,6), //e-g
Pair(5,6), //f-g
Pair(5,7), //f-h
Pair(6,7) }; //g-h
Graph G(10);
for (size_t i = 0; i < sizeof(edges)/sizeof(edges[0]); i++)
add_edge(edges[i].first, edges[i].second, G).first;
size_t colors = edge_coloring(G, get(edge_bundle, G));
cout << "Colored using " << colors << " colors" << endl;
for (size_t i = 0; i < sizeof(edges)/sizeof(edges[0]); i++) {
cout << " " << (char)('a' + edges[i].first) << "-" << (char)('a' + edges[i].second) << ": " << G[edge(edges[i].first, edges[i].second, G).first] << endl;
}
return 0;
}
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