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: ffsfsfffss

A: ffsfsff
****
Q: mlrrrrrmmmllrr

A: rrrrr
****
Q: ssssssssssssss

A:
ssssssssssssss
****