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]: ssststyysyy
[A]: yysyy


[Q]: vfvvfmvvfv
[A]: fvvf


[Q]: wmeeeweeewe
[A]:
eeeweee


