• Home
• com.github.javadev
• leetcode-in-java
• 1.38
• source code
• readme.md

×

Project download

Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $

You can buy this project and download/modify it how often you want.

g0101_0200.s0193_valid_phone_numbers.readme.md Maven / Gradle / Ivy

193\. Valid Phone Numbers

Easy

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