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.
--------
Question: ssuggsuuugugsg

Answer: uuu


Question: rprrrprzppzr

Answer: rprrrpr


Question: hiihdhhihddi

Answer:
hiih