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.

[EX Q]: dssdsdnddsd
[EX A]: dssd

[EX Q]: llljljjllj
[EX A]: ljjl

[EX Q]: xjdxxxdddjjxxd
[EX A]:
dxxxd