my-solutions/leetcode/0193-valid-phone-numbers
2023-11-29 11:09:53 +05:00
..
file.txt Update readme, rename problems directory 2023-11-29 11:09:53 +05:00
main.sh Update readme, rename problems directory 2023-11-29 11:09:53 +05:00
readme.md Update readme, rename problems directory 2023-11-29 11:09:53 +05:00

193. Valid Phone Numbers

Given a text file file.txt that contains a list of phone numbers (one per line), write a one-liner bash script to print all valid phone numbers.

You may assume that a valid phone number must appear in one of the following two formats: (xxx) xxx-xxxx or xxx-xxx-xxxx. (x means a digit)

You may also assume each line in the text file must not contain leading or trailing white spaces.

Example:

Assume that file.txt has the following content:

987-123-4567
123 456 7890
(123) 456-7890

Your script should output the following valid phone numbers:

987-123-4567
(123) 456-7890