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: caaccaccac

SOLUTION: accacca

PROBLEM: ssqssqswqqsqws

SOLUTION: sqssqs

PROBLEM: cactacataa

SOLUTION:
tacat

