In this task you will be given a string and you should find the longest substring that is a palindrome. A palindrome is a string that is the same backwards as it is forwards. If the shortest possible palindrome is length 1 you should return the first character.

Q: ssnjnjssjnnn

A: njssjn
****
Q: ppuppuuupuppupp

A: puppup
****
Q: jbjjjbhjjjjhh

A:
hjjjjh
****