Re: Manipulating Strings
- To: mathgroup at smc.vnet.net
- Subject: [mg28283] Re: [mg28248] Manipulating Strings
- From: BobHanlon at aol.com
- Date: Sat, 7 Apr 2001 03:44:41 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
squash[str_String] := StringJoin[First /@ Split[Characters[str]]];
Bob Hanlon
In a message dated 2001/4/6 2:23:33 AM, bghiggins at ucdavis.edu writes:
>I have a string with runs of repeated characters and want to replace
>sequences of repeated characters with a single character. For example
>consider the string
>
>"CLKJLDiCXLklJDMXLKJdLmxLLLEIKXMDLKJcMDLKJXMeNNlB"
>Thus I want a function that will take the groups "LLL" and "NN" in the
>above string and replace them with "L" and "N".
>
>Now I have been able to devise such a function but it seems pretty
>clunky, and I was wondering if anyone had a better idea tha made use
>of StringMatchQ to do the same task. Here is my method
>
>squash[str_String] := Module[{repeatCharList, repeatPattern,
>repeatChar},
> repeatCharList =
> Select[Split[Characters[proteinString2]], Length[#] > 1 &];
> repeatPattern = Apply[StringJoin, repeatCharList, 1];
> repeatChar = Map[First, repeatCharList];
> StringReplace[str, Thread[repeatPattern -> repeatChar]]]
>