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: zaaazavazaa

A: aazavazaa
****
Q: iiiaiiaiaaiz

A: iaiiai
****
Q: anggnanaga

A:
anggna
****
