$s = '00111100110';;

$s =~ s[(1+)]['2' x length $1]e;;

print $s;;
00222200110

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Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re: how to replace a matched pattern in a string with a different pattern of same length? by BrowserUk
in thread how to replace a matched pattern in a string with a different pattern of same length? by BhariD

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