Haskell help!

Marc Ziegert coeus@gmx.de
Tue, 25 Mar 2003 14:57:40 +0100


looks like a genetic algorithm, i've programmed years ago. :)

i need the sourcecode to solve the problem.
it seems that you "zip" the two strings together:

unzip $ zip "abcde" "123"
->
unzip [('a','1'),('b','2'),('c','3')]
->
("abc","123")

i've no idea why you got "saaturn".

- marc




Am Dienstag, 25. M=E4rz 2003 01:32 schrieb Weix, Rachel Lynn:
> Hi,
>
> I'm a college student trying to write a Haskell program, and I'm having
> some problems getting the correct output.  I need to write a program
> which will return a set of optimally aligned sequences, with "optimal"
> being defined as such: mismatch or space (represented by a "-") =3D -1;
> else 1 for every pair (see below for what a pair is)
>
> An example set of sequences with an alignment of -3 is as follows:
>
> sc-h-e-me
> icecream-
>
> (s,i) are a pair, (c, c), etc.
>
> For right now, I'm only returning a potential solution (vs. a set of
> solutions), and I'm having problems with any set of sequences that
> aren't the same length.  My results are listed below.  I don't want to
> include the code for now since it's about a page long (printed out) but
> was hoping maybe someone had an idea as to why I'm getting such odd
> results?  If code will help, I can exchange back and forth with whoever
> thinks they might be able to help me out.  Your help is much
> appreciated!
>
> Rachel
>
>
> -- Each word/sequence you see has been predefined in my Haskell code
> -- This first example appears to work just fine
>
> Main> printSeq icecream scheme
>
> ("icecream", "scheme--")
>
>
>
> Main> printSeq hate hatter
>
> ("hat-e", "hatte")
>
>
>
> Main> printSeq scheme saturn
>
> ("scheme", "saatur")
>
>
>
> Main> printSeq saturn scheme
>
> ("saaturn", "scheme-")
>
>
>
> Main> printSeq saturn hatter
>
> ("saaturn", "hatter-")
>
>
>
> Main> printSeq hatter saturn
>
> ("hatter", "saatur")
>
>
>
> Main> printSeq mad saturn
>
> ("mad", "saa")
>
>
>
> Main> printSeq hate hatter
>
> ("hat-e", "hatte")
>
>
>
> Main> printSeq snowball icecream
>
> ("snowb-all", "icecream-")
>
>
>
> Main> printSeq mad computer
>
> ("--mad", "compu")
>
>
>
> Main> printSeq mad snowball
>
> ("mad", "sno")