MathGroup Archive 2001

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Manipulating Strings


Brian-

In[31]:=
str = "aaabccd55kleeeee"
Out[31]=
"aaabccd55kleeeee"
In[32]:=
squash2[string_String] :=
  StringJoin[Characters[string] //. {{h___, x_, x_, t___} -> {h, x, t}}]
In[33]:=
repeatedCharReplace[str]
Out[33]=
"abcd5kle"

-matt






bghiggins at ucdavis.edu (Brian Higgins) on 04/05/2001 11:52:56 PM

cc:
Subject: [mg28289]  [mg28248] Manipulating Strings



Dear Math group,

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]]]

Thanks much,

Brian




**************************************************************************************************************************************
All Autoliv e-mails remain Company property and shall be used for
business-related purposes only.   Do not forward any material contained
within this e-mail without prior, written permission from the author's
manager.  Autoliv disclaims all responsibility and accepts no liability
(including negligence) for the consequences for any person acting, or
refraining from acting on this information prior to the receipt by those
persons of subsequent written confirmation.
**************************************************************************************************************************************



  • Prev by Date: Re: MATHEMATICA WARNING
  • Next by Date: RE: Howto vonvert a list of functions in a list valued function
  • Previous by thread: RE: Manipulating Strings
  • Next by thread: Re: Manipulating Strings