awesee · awesee · Jan 25, 2019 · Jan 25, 2019
diff --git a/problems/valid-phone-numbers/file.txt b/problems/valid-phone-numbers/file.txt
@@ -0,0 +1,3 @@
+987-123-4567
+123 456 7890
+(123) 456-7890
diff --git a/problems/valid-phone-numbers/valid_phone_numbers.bash b/problems/valid-phone-numbers/valid_phone_numbers.bash
@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+
+# Read from the file file.txt and output all valid phone numbers to stdout.
+
+grep -P '^(\d{3}-|\(\d{3}\) )\d{3}-\d{4}$' file.txt
diff --git a/problems/valid-phone-numbers/valid_phone_numbers.go b/problems/valid-phone-numbers/valid_phone_numbers.go
diff --git a/problems/valid-phone-numbers/valid_phone_numbers_test.go b/problems/valid-phone-numbers/valid_phone_numbers_test.go