Sha256: 268aba601df6a33a4ad5808592d94e787d99a2a496f0acac69ea48c3f93824c1
Contents?: true
Size: 1.01 KB
Versions: 16
Compression:
Stored size: 1.01 KB
Contents
The **North American Numbering Plan (NANP)** is a telephone numbering system used by many countries in North America like the United States, Canada or Bermuda. All NANP-countries share the same international country code `1`. NANP numbers are ten-digit numbers consisting of a three-digit Numbering Plan Area code, commonly known as *area code*, followed by a seven-digit local number. The first three digits of the local number represent the *exchange code*, followed by the unique four-digit number which is the *subscriber number*. The format is usually represented as ``` (NXX)-NXX-XXXX ``` where N is any digit from 2 through 9 and X is any digit from 0 through 9. Your task is to clean up differently formated telephone numbers by removing punctuation and the country code (1) if present. **Example:** +1 (613)-995-0253 613-995-0253 1 613 995 0253 613.995.0253 - - - - - - - - - - - - - 6139950253 **Note:** As this exercise only deals with telephone numbers used in NANP-countries only 1 is considered a valid country code.
Version data entries
16 entries across 16 versions & 1 rubygems