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]: qgnqgngnqq
[A]: gng


[Q]: eggceeeegcce
[A]: eeee


[Q]: bvbvvvebevb
[A]:
vebev