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: saaraasaarsssa

A: saaraas
****
Q: vvtvtvvvvt

A: vvtvtvv
****
Q: cchxxhhxhh

A:
hhxhh
****