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//=======================================================================
// 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 <deque> // to store the vertex ordering
#include <vector>
#include <list>
#include <iostream>
#include <boost/graph/vector_as_graph.hpp>
#include <boost/graph/topological_sort.hpp>
int
main()
{
using namespace boost;
const char *tasks[] = {
"pick up kids from school",
"buy groceries (and snacks)",
"get cash at ATM",
"drop off kids at soccer practice",
"cook dinner",
"pick up kids from soccer",
"eat dinner"
};
const int n_tasks = sizeof(tasks) / sizeof(char *);
std::vector < std::list < int > > g(n_tasks);
g[0].push_back(3);
g[1].push_back(3);
g[1].push_back(4);
g[2].push_back(1);
g[3].push_back(5);
g[4].push_back(6);
g[5].push_back(6);
std::deque < int >topo_order;
topological_sort(g, std::front_inserter(topo_order),
vertex_index_map(identity_property_map()));
int n = 1;
for (std::deque < int >::iterator i = topo_order.begin();
i != topo_order.end(); ++i, ++n)
std::cout << tasks[*i] << std::endl;
return EXIT_SUCCESS;
}
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