An explanation of common notations of area codes would be nice for us non-Americans :)
I (as French) Agree. A Wikipedia link which would explain supported area codes is definitely missing.
"You can assume the first three digits of a ten-digit number will always be the area code." Hmmm.... too bad there was no explanation applying to telephone numbers with more (or less?) than ten digits.
The problem fails to mention that the area codes should be sorted, and that phone numbers may have country codes.
This isn't about American-style phone numbers, but US-style. Otherwise it would be nice to include other test cases so people would be required to actually parse the country code away. Now it is just a matter of removing a leading 1.
I thought I would document my regex, as it looks fairly complex at first glance.
Apparently the order needs to be the same as that defined by the test suite; which is not in the order of the phone numbers given :(
Is there a way to execute regexp/regexprep with multiple expresssions at the same time?
Not sure what's going on here, but it works in my actual MATLAB program, and Octave.
Encode Roman Numerals
Filter AC, pass DC
Back to basics 17 - white space
Is A the inverse of B?
Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock.
What is the next step in Conway's Life?
Swap the first and last columns
Alphabetize by last name
Find all elements less than 0 or greater than 10 and replace them with NaN
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