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Recursion Confusion

by live4tech (Sexton)
on Apr 27, 2013 at 06:12 UTC ( #1030922=perlquestion: print w/replies, xml ) Need Help??

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  1. or download this
    sub factorial 
    {
    ...
       return 1 if $n == 0;
       return factorial($n-1) * $n;
    }
    
  2. or download this
    sub hanoi 
    {
    ...
          hanoi($n-1, $extra, $end, $start);
       }
    }
    
  3. or download this
    Move disk #1 from A to C.
    Move disk #2 from A to B.
    ...
    Move disk #1 from B to A.
    Move disk #2 from B to C.
    Move disk #1 from A to C.
    

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Node Type: perlquestion [id://1030922]
Approved by davido
Front-paged by kcott
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[Corion]: marto: How's things? I hope the kids are fine and you too!
[Corion]: Oh yay. I wonder why a very simple change in a program doesn't elicit a diff, and now I see that my diff program seems to have a bug ;)
[1nickt]: marto thanks for asking, so far so good. A pretty modern stack and decent procedures, although rather too much home-built stuff (e.g. a logging role that should tries to duplicate Log::Any).
[Corion]: No. It's just that I'm comparing the same output file twice, instead of comparing the output files of the two runs %-)
[Corion]: Lo and behold, running a program with the correct input files yields the correct (and expected) output. Yay me.
[1nickt]: Got a MacBook and am expected to develop directly on it, ironic given the recent thread about that.
[marto]: Corion, some not too serious issues with the kids, hopefully, other than that just dealing with commuting by car again in the winter, not much fun so far, and there's no real 'bad' weather yet :)
[marto]: 1nickt, glad to hear it, I'm sure you'll bring improvements to their stack in due course ;)

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