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: qjqmmqmjjmmmm

A: qmmq
****
Q: xzxnzxznxnzzxx

A: xnzxznx
****
Q: ieeuiueieui

A:
iueieui
****