51 lines
1.4 KiB
C++
51 lines
1.4 KiB
C++
//=======================================================================
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// Copyright 2001 Jeremy G. Siek, Andrew Lumsdaine, Lie-Quan Lee,
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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 <vector>
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#include <deque>
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#include <iostream>
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#include <boost/graph/topological_sort.hpp>
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#include <boost/graph/adjacency_list.hpp>
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int
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main()
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{
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using namespace boost;
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const char *tasks[] = {
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"pick up kids from school",
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"buy groceries (and snacks)",
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"get cash at ATM",
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"drop off kids at soccer practice",
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"cook dinner",
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"pick up kids from soccer",
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"eat dinner"
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};
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const int n_tasks = sizeof(tasks) / sizeof(char *);
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adjacency_list < listS, vecS, directedS > g(n_tasks);
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add_edge(0, 3, g);
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add_edge(1, 3, g);
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add_edge(1, 4, g);
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add_edge(2, 1, g);
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add_edge(3, 5, g);
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add_edge(4, 6, g);
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add_edge(5, 6, g);
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std::deque < int >topo_order;
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topological_sort(g, std::front_inserter(topo_order),
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vertex_index_map(identity_property_map()));
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int n = 1;
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for (std::deque < int >::iterator i = topo_order.begin();
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i != topo_order.end(); ++i, ++n)
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std::cout << tasks[*i] << std::endl;
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return EXIT_SUCCESS;
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}
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