Re^2: extract sentences with certain number of a character

in reply to Re: extract sentences with certain number of a character
in thread extract sentences with certain number of a character

code:

/^[^r]*r[^r]*r[^r]*r[^r]*r[^r]*$/

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Re^3: extract sentences with certain number of a character
by Jenda (Abbot) on Apr 27, 2008 at 11:51 UTC

/^(?:[^r]*r){4}[^r]*$/

Jenda
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