Write a Python function named conditional_concatenate
that takes two string parameters. The function should return a new string where the longer string is on the outside and the shorter string is on the inside.
Example 1:
Input: conditional_concatenate('Hello', 'world')
Output: 'worldHelloworld'
Example 2:
Input: conditional_concatenate('Python', 'fun')
Output: 'PythonfunPython'