Help creating RegEx to Find this pattern

Question

Need to an expression that returns only things with an "I" followed by either a "J" or a "V" (No Quotes) and then a minimum of 1 number up to 3 numbers.

I J### I V### I J## I V## I J# I v#

Thank to everyone who has already helped!

Answer 1

Depends on your flavor

I(J|V)[0-9]{1,3}

Do you also need a space after an "I"?

I (J|V)[0-9]{1,3}

Answer 2

Your description does not match your example, and there are some idiomatic things that you'll need to take care of (case insensitivity, that depends on the regex engine)

I [JV]\d{1,3}

This will match

• I J1
• I J12
• I J123
• I V1
• I V12
• I V123

But WILL NOT MATCH

• I 1
• I 12
• I 123

Answer 3

Tested with RegExBuddy:

I [JV]\d{1,3}\s

Edited:

Pretty much like Vinko Vrsalovic one, but with his, if you have I J12345678, It will grab "I J123" in your expression. Adding \s demands a special char at the end, like a space, line feed, etc...

Answer 4

I think the others missed the v# spec.

I[JVv]\d{1,3}

Of course perhaps the lowercase v was a typo.