Return the nodes on the cycle that corresponds to the maximum/minimum
cycle mean as an ordered list. If there is more than one cycle with the
same maximal/minimal cycle, one of them is returned randomly,
but the same cycle is returned by different invocations of the method,
unless the graph changes.
The nodes on the cycle that corresponds to one of the
maximum/minimum cycle means as an ordered list.
Return the maximum cycle mean for a given directed graph.
The maximum cycle mean value.
Return minimum cycle mean for a given directed graph.