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Re: Python solve problem with string operation

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On Thu, 16 Jan 2014 22:24:40 -0000, Nac Temha <naccttemha@gmail.com> wrote:

> Hi everyone,
>
> I want to do operation with chars in the given string. Actually I want to
> grouping the same chars.
>
> For example;
>
> input : "344111133311222223377"
> operation-> (3)(44)(1111)(333)(11)(22222)(33)(77)
> output: "34131237"
>
>
>
> How can I do without list, regular expression. just using string
> operations. Using an effective methods of python for this problem.

I almost convinced myself this was homework, you know.  A hint as to why  
you might want such a thing would look a lot less suspicious :-)

The simplest way to do this is probably using groupby:


 from itertools import groupby

input = "344111133311222223377"
output = "".join(k for k, _ in groupby(s))
print output



-- 
Rhodri James *-* Wildebeest Herder to the Masses

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Thread

Python solve problem with string operation Nac Temha <naccttemha@gmail.com> - 2014-01-17 00:24 +0200
  Re: Python solve problem with string operation John Gordon <gordon@panix.com> - 2014-01-16 22:30 +0000
    Re: Python solve problem with string operation Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-01-16 22:48 +0000
      Re: Python solve problem with string operation John Gordon <gordon@panix.com> - 2014-01-16 22:58 +0000
  Re: Python solve problem with string operation giacomo boffi <pecore@pascolo.net> - 2014-01-17 01:17 +0100
    Re: Python solve problem with string operation giacomo boffi <pecore@pascolo.net> - 2014-01-17 01:38 +0100
  Re: Python solve problem with string operation Denis McMahon <denismfmcmahon@gmail.com> - 2014-01-17 00:30 +0000
  Re: Python solve problem with string operation "Rhodri James" <rhodri@wildebst.org.uk> - 2014-01-17 01:05 +0000
  Re: Python solve problem with string operation Asaf Las <roegltd@gmail.com> - 2014-01-16 17:36 -0800

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