regular expression for nth character in a string

Mon, Apr 25, 2011 3:17 AM

Hi, I have a string

"InTrouble"

and want to extract, say, the first two characters: "In"
or the last three: "blee"
or the 3rd, 4th, and 5th: "Trou"

Is there an easy way of doing this quickly with regular expressions in gsub, grep or similar?

Thank you for any help.

Gon?alo

Thread (5 messages)

Gonçalo Ferraz regular expression for nth character in a string Apr 25 Jim Lemon regular expression for nth character in a string Apr 25 jim holtman regular expression for nth character in a string Apr 25 David Winsemius regular expression for nth character in a string Apr 25 Gabor Grothendieck regular expression for nth character in a string Apr 25