From: Eugene Kalenkovich <rubify@...>
Date: 2007-12-08T14:40:03+09:00
Subject: Re: Word Loop (#149)

"Alex Fenton" <alex@deleteme.pressure.to> wrote in message 
news:x7j6j.1781$h35.792@newsfe2-gui.ntli.net...
> Phrogz wrote:
>> On Dec 7, 1:45 pm, Ruby Quiz <ja...@grayproductions.net> wrote:
>>> Given a single word as input try to find a repeated letter inside of it 
>>> such
>>> that you can loop the text around and reuse that letter.  For example:
>>>
>>>         $ ruby word_loop.rb Mississippi
>>>          i
>>>          p
>>>          p
>>>         Mis
>>>          ss
>>>          si
>
> <snip>
>
>> Maybe it's because it's a Friday afternoon, but I don't understand the
>> quiz problem. Could someone who understands this try explaining it
>> (without, of course, discussing any code or even pseudo-code to
>> approach it).
>
> It took me a few monents too. The letters have to be arranged in a grid so 
> that by moving one square at a time, the word is spelled out. The test is 
> to see whether the word can be spelled out by, at some point, moving over 
> the same grid square twice.
>
> I'm taking from the MISSISSIPI example that moves have to be in the same 
> direction as the last move, or at a 90 degree angle to it, otherwise it 
> could be spelled by moving up back onto "S" after the second "I" in the 
> bottom right.
>
> a
>

Hmm..
Looks like mississippi is ambiguous, what about

  I
  P
  P
  I
MISS
  SI

?


EK