On 2014-01-17 00:24, Nac Temha 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'm not sure what constitutes "just using string operations", but
it's quite simple with stdlib tools:
>>> from itertools import groupby
>>> ''.join(k for k,v in groupby("344111133311222223377"))
'34131237'
-tkc
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