Standard function for specified return

Question

Hi,
I have an issue I want your help with.
This is only valid if numbers 5 or 6 are in the input.
I want to return the last 2 digits from the input parameter. for example. Input: 123456. Output: 56.
Or if there's only 12345 I want to return 5.
I can't do any substring because the input parameter could be whatever. example. 125. Example: 6.
Summary. I need a function that returns the last digits of the input parameter only if the input includes 5 or 6, or both.
Hope you understand.
Regards.

Answer 1

Below UDF handles all possible inputs as per your requirement.
public String returnLast2Digits(String var1, Container container) throws StreamTransformationException{
  if( var1.length()>1){
      String str2 = var1.substring(var1.length()-2,var1.length());
        if(str2.substring(0,1).equals("5")&& str2.substring(1,2).equals("6")){
           return  str2;
       else if(str2.substring(1,2).equals("5") || str2.substring(1,2).equals("6")){     
           return str2.substring(1,2);
       else{
          return "";
   }else{
       if(var1.equals("5") || var1.equals("6")){
          return var1;
       } else{
          return "";
Edited by: Baskar Gopal on May 17, 2011 2:54 PM