Given an alphanumeric telephone number (Ex. 1-800-COLLECT), return the purely numeric phone number as a vector. This problem uses the US number associations as shown below

Example:

    phoneword = '1-800-COLLECT';
    phonenumber = phoneword2number(phoneword);

outputs

    phonenumber = [1 8 0 0 2 6 5 5 3 2 8]
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Last Solution submitted on Sep 28, 2026

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berti manisa Christian Schröder Alexander Ross Francisco

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