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: vzzvlvvvvl

A: lvvvvl
****
Q: lllloooell

A: llll
****
Q: hhkjkkhhjhhhj

A:
hhjhh
****