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Re^2: Split a string based on change of character

by Skeeve (Vicar)
on Jul 28, 2007 at 13:16 UTC ( #629290=note: print w/ replies, xml ) Need Help??


in reply to Re: Split a string based on change of character
in thread Split a string based on change of character

You can use split:

my $string= 'AAABBBCCCDD'; my $i=0; my @words= grep $i=!$i,split /(?<=(.))(?!\1)/,$string; print join "\n",@words,'';

s$$([},&%#}/&/]+}%&{})*;#$&&s&&$^X.($'^"%]=\&(|?*{%
+.+=%;.#_}\&"^"-+%*).}%:##%}={~=~:.")&e&&s""`$''`"e


Comment on Re^2: Split a string based on change of character
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Re^3: Split a string based on change of character
by ikegami (Pope) on Jul 28, 2007 at 15:02 UTC
    I never thought of
    grep $i=!$i,
    before. I usually use
    grep $i^=$i,

    Yours is easier to understand, though.

    Update: Yeah, I mean grep $i^=1,.

      But $i^=$i makes $i 0 at once. So it's different to $i=!$i

      Back in the ancient times of C64 Basic I used j=1-j


      s$$([},&%#}/&/]+}%&{})*;#$&&s&&$^X.($'^"%]=\&(|?*{%
      +.+=%;.#_}\&"^"-+%*).}%:##%}={~=~:.")&e&&s""`$''`"e

        I think ikegami meant $i^=1, i.e.:

        my @words = grep $i^=1, split /(?<=(.))(?!\1)/, $string;
        which does work.

Re^3: Split a string based on change of character
by eyepopslikeamosquito (Canon) on Jul 28, 2007 at 23:47 UTC

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