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.

[EX Q]: yyllyylhyyyl
[EX A]: yyllyy

[EX Q]: dssdssssdqsss
[EX A]: dssssd

[EX Q]: btbjtjjtjj
[EX A]:
jtjjtj