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: whwjwwwwjjjhwjh

A: jwwwwj
****
Q: ojojoujouojoj

A: ojojo
****
Q: zjzdzjddjdjzzj

A:
jzdzj
****