Question: How would I be able to do the following in R coding: I would like to create a function that would take values from a

How would I be able to do the following in R coding:

I would like to create a function that would take values from a txt file and output the rows containing valid phone numbers from the file. Valid phone numbers to take in are the following:

### ### ####

###-###-####

###.###.####

(###) ###-####

And # is a digit from 0-9

The txt file is in this form :

Tower

646-890-7689

Jump

678

What's

888.888.8888

1234

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