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Test a diamond graph.

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Co-Authored-By: Rick Winfrey <rick.winfrey@gmail.com>
This commit is contained in:
Rob Rix 2018-06-25 16:09:55 -04:00
parent d346a36559
commit 4943a58d43
1 changed files with 3 additions and 0 deletions
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3
src/Data/Graph.hs
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@ -44,6 +44,9 @@ simplify (Graph graph) = Graph (G.simplify graph)
--
-- >>> topologicalSort ((vertex 'a' `connect` vertex 'b') <> (vertex 'a' `connect` vertex 'c'))
-- "cba"
--
-- >>> topologicalSort (Class.path "abd" <> Class.path "acd")
-- "dcba"
topologicalSort :: forall v . Ord v => Graph v -> [v]
topologicalSort = go . toAdjacencyMap . G.transpose . unGraph
where go :: A.AdjacencyMap v -> [v]