ValidPhoneNumber.md

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Day #24: Valid Phone Number

• Difficulty: 6 kyu
• Solution Class: Kata.java
• Test Class: PhoneExampleTests.java
• Solved: Wednesday, May 11^th, 2016

Description:

Write a function that accepts a string, and returns true if it is in the form of a phone number.

Assume that any integer from 0-9 in any of the spots will produce a valid phone number.

Only worry about the following format:

(123) 456-7890 (don't forget the space after the close parentheses)

Examples:

validPhoneNumber("(123) 456-7890")  =>  returns true
validPhoneNumber("(1111)555 2345")  => returns false
validPhoneNumber("(098) 123 4567")  => returns false