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MathGroup Archive 2005

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Re: simple cipher

  • To: mathgroup at smc.vnet.net
  • Subject: [mg55374] Re: [mg55364] simple cipher
  • From: Andrzej Kozlowski <akoz at mimuw.edu.pl>
  • Date: Mon, 21 Mar 2005 03:01:39 -0500 (EST)
  • References: <200503200911.EAA28753@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

On 20 Mar 2005, at 10:11, zak wrote:

> s1 = {1, 0, 1, 0, 0, 1, 0, 1}
> s2 = {L, r, o, w, e, v, y, e}
>
> s1 is a kind of a sieve i want to look through to s2, so i could pick
> every letter in s2 wich correspond to every digit=1 in s1 so i could
> obtain the word "love", this is like the trivial ciphers we know in
> our childhood, i have the following approach, i hope there is other
> versions.
>
> p = Flatten[Position[s1, 1]]
> out[]= {1, 3, 6, 8}
>
> str = "";
> Do[str = StringJoin[str, ToString[s2[[p[[i]]]]]], {i, 1, 4}]
> str
>
> Out[]= Love
>
> thanks
> zak


StringJoin[ToString /@ Extract[s2, Position[s1, 1]]]

"Love"


Andrzej Kozlowski
Chiba, Japan
http://www.akikoz.net/andrzej/index.html
http://www.mimuw.edu.pl/~akoz/


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