Extract first N digits from a string

Question

I want to extract just FIRST TWO DIGITS from some strings. Suppose the data is :

ABC Conference Room Monitor - Z5580J    
ABC 19 Monitor    
ABC 24 Monitor f         


        

Answer 1

Package stringr perhaps allows for the cleanest solution:

stringr::str_extract(string, "\\d{2}")
 "55" "19" "24" "24"