Regex to match 2 digits, optional decimal, two digits

Question

I\'ve spent half an hour trying to get this, maybe someone can come up with it quickly.

I need a regular expression that will match one or two digits, followed by an

Answer 1

^(\d{0,2}\\.)?\d{1,2}$

\d{1,2}$ matches a 1-2 digit number with nothing after it (3, 33, etc.), (\d{0,2}\.)? matches optionally a number 0-2 digits long followed by a period (3., 44., ., etc.). Put them together and you've got your regex.