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| HELP.md | ||
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Phone Number
Welcome to Phone Number on Exercism's Rust Track.
If you need help running the tests or submitting your code, check out HELP.md.
Instructions
Clean up user-entered phone numbers so that they can be sent SMS messages.
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 formatted telephone numbers by removing punctuation and the country code (1) if present.
For example, the inputs
+1 (613)-995-0253613-995-02531 613 995 0253613.995.0253
should all produce the output
6139950253
Note: As this exercise only deals with telephone numbers used in NANP-countries, only 1 is considered a valid country code.
Source
Created by
- @EduardoBautista
Contributed to by
- @andrewclarkson
- @ashleygwilliams
- @coriolinus
- @cscorley
- @cwhakes
- @EduardoBautista
- @efx
- @ErikSchierboom
- @IanWhitney
- @kytrinyx
- @lutostag
- @mkantor
- @navossoc
- @nfiles
- @petertseng
- @pminten
- @rofrol
- @Stargator
- @stevejb71
- @stringparser
- @vinmaster
- @xakon
- @ZapAnton
Based on
Event Manager by JumpstartLab - http://tutorials.jumpstartlab.com/projects/eventmanager.html