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: nxxixinniixixxn

A: inni
****
Q: fuxxfuufxf

A: xfuufx
****
Q: yyywyypyypwy

A:
yywyy
****
