STATE MACHINES AND REGULAR EXPRESSIONS PLEASE DOUBLE CHECK, AND VERIFY YOUR ANSW

Question

STATE MACHINES AND REGULAR EXPRESSIONS

PLEASE DOUBLE CHECK, AND VERIFY YOUR ANSWER BEFORE SUBMITTING.

You have been hired by Gell - a company that builds computers and electronic devices to help them build a new warranty self service portal. One of your tasks is to an up-front validation of the serial number entered on the web site before we go to the database to get the specifics on this computer/device. Unfortunately, each division of the company has a different idea on what a serial number should look like. The System Architect has decided that you need to create a single regular expression that will match ONLY the following serial number patterns:

Computer serial numbers start with a consonant, then a vowel (never y), a dash, then 6 digits. Examples: XA-123456 CU-987654 BO-062021

GPS's have 1-8 digits then 2-4 characters. Examples: 1BB 18273645QZ

Toys use 5 digits, a comma, then 5 more digits. Examples: 12345,98765 35481,01257

Cell Phones use a three digit carrier code, a colon, two characters, a greater than sign then 7 digits. Examples: 321:BB>1234567 332:QG>3948571

All letters are upper case. Please test your regex thoroughly.

Explanation / Answer

^(([^aeiouAEIOU][aeiouAEIOU]-d{6})|(d{1,8}[a-zA-Z]{2,4})|(d{5},d{5})|(d{3}:[a-zA-Z]{2}>d{7}))$

This will match all those patterns.

Doesn't support newlines though. That shouldn't be a problem.

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