Ben Harris 81173dd380 | ||
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.exercism | ||
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HELP.md | ||
PhoneNumber.cs | ||
PhoneNumber.csproj | ||
PhoneNumberTests.cs | ||
README.md |
README.md
Phone Number
Welcome to Phone Number on Exercism's C# 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)-995-0253
613-995-0253
1 613 995 0253
613.995.0253
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
- @bressain
Contributed to by
- @ErikSchierboom
- @j2jensen
- @jwood803
- @kytrinyx
- @robkeim
- @tomschluter
- @vgrigoriu
- @wolf99
Based on
Event Manager by JumpstartLab - http://tutorials.jumpstartlab.com/projects/eventmanager.html