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: gyykyggggykyky

A: ykyggggyky
****
Q: owwfffwwfoofw

A: wwfffww
****
Q: ppfyyypfypfyf

A:
yyy
****