TASK DEFINITION: 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.
PROBLEM: ymmyemeyymyyym

SOLUTION: yemey

PROBLEM: ehaaaehhehhheaa

SOLUTION: hhehh

PROBLEM: rkkbbkrbrbrk

SOLUTION:
krbrbrk