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Diffstat (limited to 'src/boost/libs/graph/example/connected-components.cpp')
-rw-r--r-- | src/boost/libs/graph/example/connected-components.cpp | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/boost/libs/graph/example/connected-components.cpp b/src/boost/libs/graph/example/connected-components.cpp new file mode 100644 index 00000000..15a83ca6 --- /dev/null +++ b/src/boost/libs/graph/example/connected-components.cpp @@ -0,0 +1,39 @@ +//======================================================================= +// Copyright 2001 Jeremy G. Siek, Andrew Lumsdaine, Lie-Quan Lee, +// +// 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 <iostream> +#include <vector> +#include <boost/graph/connected_components.hpp> +#include <boost/graph/adjacency_list.hpp> + +int +main() +{ + using namespace boost; + typedef adjacency_list < vecS, vecS, undirectedS > Graph; + + const int N = 6; + Graph G(N); + add_edge(0, 1, G); + add_edge(1, 4, G); + add_edge(4, 0, G); + add_edge(2, 5, G); + + std::vector<int> c(num_vertices(G)); + int num = connected_components + (G, make_iterator_property_map(c.begin(), get(vertex_index, G), c[0])); + + std::cout << std::endl; + std::vector < int >::iterator i; + std::cout << "Total number of components: " << num << std::endl; + for (i = c.begin(); i != c.end(); ++i) + std::cout << "Vertex " << i - c.begin() + << " is in component " << *i << std::endl; + std::cout << std::endl; + return EXIT_SUCCESS; +} |