use reqex to get the middle character and repeat it

[Adam Akhtar]

say i have the string "qxq" and i want to repeat the middle char 4 times
i could do this
str = "qxq
newstring = str.gsub(/(x)/, '\1'*4)

but if i have a string full of x's i.e. "xxx"
then it will repeat all of them 4 times and thats not what i want to
do...i just want the middle one to be repeated.

How do i alter that regex to do this???

 

[Sebastian Hungerecker]

say i have the string "qxq" and i want to repeat the middle char 4 times
i could do this
str = "qxq
newstring = str.gsub(/(x)/, '\1'*4)

but if i have a string full of x's i.e. "xxx"
then it will repeat all of them 4 times and thats not what i want to
do...i just want the middle one to be repeated.

How do i alter that regex to do this???

str.gsub(/(\w)(x)(\w)/, '\1'+'\2'*4+'\3')

HTH,
Sebastian

 

[Adam Akhtar]

ahh why didnt i just think of that... str.gsub(/(\w)(x)(\w)/,
'\1'+'\2'*4+'\3')

In this situation the string will always be 3 chars long and will either
consist of spaces or x so the above will be fine (with a bit of
tweaking).

Thanks very much!

 

[Peña, Botp]

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