how to write regex for number not starting with 11 in WSDL

Question

I need a regular expression for WSDL, in which a number should not start with 11 . I'm using the following pattern but it is not working. The number is 4 digit and it should not start with 11.

<xsd:pattern value="(?!11)[0-9]{2}[0-9]{2}" />

Thanks in advance.

Answer 1

How about the following regex:

((1[02-9])|([02-9]1)|([02-9][02-9]))[0-9][0-9]
  ^^^^^^^   ^^^^^^^   ^^^^^^^^^^^^  ^^^^^^^^^^
  AAAAAAA   BBBBBBB   CCCCCCCCCCCC  DDDDDDDDDD

What the partial expressions do:

• AAA finds all two digit numbers starting with 1 and not having 1 as the second digit
• BBB finds all two digit numbers ending with 1 and not having 1 as the first digit
• CCC finds all two digit numbers not containing the digit 1 at all
• DDD adds two more digits 0..9 to make it a four digit number

The pipe signs | between the expressions AAA and BBB and CCC function as a logical OR.