prim_minimum_spanning_tree
即使我只使用正数,以下代码也会在调用时抛出“负边缘权重” 。应该改变什么才能使其工作?
typedef boost::property<vertex_distance_t, int> VertexProperty;
typedef boost::property<edge_weight_t, int> EdgeProperty;
typedef adjacency_list<vecS, vecS, undirectedS, VertexProperty, EdgeProperty> Graph;
typedef pair<int, int> Edge;
Edge edges[] = {Edge(0, 1), Edge(1, 2)};
int weights[] = {2, 1}; // this works: int weights[] = {1, 2};
Graph g(edges, edges + sizeof(edges)/sizeof(Edge), weights, 3);
std::vector<Graph::vertex_descriptor> predecessors(num_vertices(g));
boost::prim_minimum_spanning_tree(g, &predecessors[0]);
注意:我可以通过调整权重值使其成功。
编译器:MS Visual Studio 2010 C++ Boost 版本:1.54