51 lines
1.4 KiB
C++
51 lines
1.4 KiB
C++
//=======================================================================
|
|
// 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;
|
|
}
|