Remove any digit only in first N characters

Question

I\'m looking for a regular expression to catch all digits in the first 7 characters in a string.

This string has 12 characters:

A12B345CD678
         


        

Answer 1

The regex solution is cool, but I'd use something easier to read for maintainability. E.g.

library(stringr)

str_sub(s, 1, 7) = gsub('[A-Z]', '', str_sub(s, 1, 7))