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: tttttfttfttff

A: ttfttftt
****
Q: ldcldddlclllc

A: cldddlc
****
Q: ijiwjijjwjw

A:
iji
****