How can I validate the range 1-99 using a regex?

user_155695 0
Viewed 61814

I need to validate some user input, to ensure a number entered is in the range of 1-99 inclusive. These must be whole (Integer) values

Preceeding 0 is permitted, but optional

Valid values

  1. 1
  2. 01
  3. 10
  4. 99
  5. 09

Invalid values

  1. 0
  2. 007
  3. 100
  4. 10.5
  5. 010

So far I have the following regex that I've worked out : ^0?([1-9][0-9])$

This allows an optional 0 at the beginning, but isn't 100% correct as 1 is not deemed as valid

Any improvements/suggestions?

validation regex java
11 Answers

pretty late but this will work.

^[1-9][0-9]?$
user_14300010
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