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Returns a cycle if the graph has one (as a list of vertices), an e
+mpty list if no cycle can be found.
Note that this just returns the vertices of a cycle: not any parti
+cular cycle, just the first one it finds. A repeated call might find
+the same cycle, or it might find a different one, and you cannot call
+ this repeatedly to find all the cycles.
Use two parentheses: (Like this: :) )
Use one parenthesis: (Like this: :)
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Use angle/square brackets instead of parentheses
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Make the smiley a dunce: (:>
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Results (620 votes),