fork download
copy 
  1. library(stringr)
  2.  
  3. x <- c('123456789', 'kfasdf  3456789asdf', 'a        1')
  4. y <- c('12345 789', '1       9', 'a     678a')
  5.  
  6. str_match(x, regex('(?=[ \\d]{9}(.*$))([ ]*\\d+)\\1$')) [,3]
  7. str_match(y, regex('(?=[ \\d]{9}(.*$))([ ]*\\d+)\\1$')) [,3]
Success #stdin #stdout 0.24s 42332KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
[1] "123456789" "  3456789" "        1"
[1] NA NA NA
https://ideone.com/7JeBU1
language:
R (R 3.5.2)
created:
5 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!