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Exercise

Hunting for phone numbers

For your first task you are going to pull out the phone numbers from this vector of contact information:

contact

You'll assume the phone numbers you are looking for follow the American standard of a three digit area code, a three digit exchange and then a four digit number, but each part could be separated by spaces or various punctuation symbols.

Instructions 1/4

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Phone numbers start with three digits. Create a pattern that matches three digits in a row. Use str_view_all() to test your pattern.