linked list with cycle structure

Robert Kern robert.kern at
Thu Jan 8 01:23:24 CET 2009

Terry Reedy wrote:
> David Hláčik wrote:
>> But what if i have another condition , and that is *i can use only
>> helping memory with constant size* ? This means i am not able to
>> create any set and adding elements there. I need to have a constant
>> size variables . This is complication a complication for me.
> Interesting problem.  If it is homework, there must be an answer.

It's also an interview question I've seen reasonably often, particularly with 
that last complication.

Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco

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