Phone Number

Ringkasan Tantangan

Clean up user-entered phone numbers so that they can be sent SMS messages.

Visit the phone-number exercise on Exercism to read the full instructions and download the exercise files.

Community Solutions

Lihat Solusi Komunitas

The following are the top 3 community solutions by stars:

Solution 1 by @tqa236 (⭐ 11) — View on Exercism
Solution 2 by @ttnagata (⭐ 3) — View on Exercism
Solution 3 by @caddycarine (⭐ 1) — View on Exercism

Source: Exercism r/phone-number

💡 Lihat Solusi

parse_phone_number <- function(number_string) {
  all_nums <- gsub("\\D", "", number_string)
  
  pattern <- "^1?[2-9]\\d{2}[2-9]\\d{6}$"
  if (!grepl(pattern, all_nums)) return(NULL)
  
  gsub("^1", "", all_nums)
}