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Commit 3b8b453

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Add: Valid Phone Numbers
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987-123-4567
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123 456 7890
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(123) 456-7890
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#!/usr/bin/env bash
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# Read from the file file.txt and output all valid phone numbers to stdout.
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grep -P '^(\d{3}-|\(\d{3}\) )\d{3}-\d{4}$' file.txt

‎problems/valid-phone-numbers/valid_phone_numbers.go‎

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‎problems/valid-phone-numbers/valid_phone_numbers_test.go‎

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