note
sk
How about [cpan://Graph]?<p>
Relevant parts from the document - <p>
<c>
has_a_cycle
$g->has_a_cycle
Returns true if the graph has a cycle, false if not.
find_a_cycle
$g->find_a_cycle
Returns a cycle if the graph has one (as a list of vertices), an empty list if no cycle can be found.
Note that this just returns the vertices of a cycle: not any particular 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.
</c><P>
<b>Update</b>:
<i>I am looking for cycles in this graph </i><p>
<c> </c> I hope you are not trying to find out "all" cycles in the graph which is NP-complete. <p>
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