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ProgramSnail 2023-05-07 15:17:37 +03:00
parent c1dec6a0d1
commit 173d50672a
15 changed files with 1475 additions and 35 deletions
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28
include/utils.hpp
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@ -107,4 +107,32 @@ private:
std::vector<size_t> ranks_;
};
static void BackVisitDfs(size_t id,
std::vector<size_t>& verticles,
std::vector<size_t>& marks,
const std::vector<std::vector<size_t>>& edges,
size_t mark) {
if (marks[id] != 0) {
return;
}
marks[id] = mark;
verticles.push_back(id);
for (size_t i = 0; i < edges[id].size(); ++i) {
BackVisitDfs(id, verticles, marks, edges, mark);
}
}
static std::vector<size_t> BackTopSort(const std::vector<std::vector<size_t>>& edges_) {
std::vector<size_t> sorted_verticles;
std::vector<size_t> marks(edges_.size(), 0);
for (size_t i = 0; i < marks.size(); ++i) {
BackVisitDfs(i, sorted_verticles, marks, edges_, 1);
}
return sorted_verticles;
}
} // namespace utils