Problem 91. Get the area codes from a list of phone numbers

Given a string of text with phone numbers in it, return a unique'd cell array of strings that are the area codes.

 s = '508-647-7000, (508) 647-7001, 617-555-1212'; 


 a = {'508','617'}

Note: This problem refers to American-style phone numbers. You can assume the first three digits of a ten-digit number will always be the area code.

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37.26% Correct | 62.74% Incorrect
Last Solution submitted on May 21, 2020

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