Question
Given a string, find the longest substring which is palindrome.
Answer
https://github.com/MDGSF/GoPractice/blob/master/a/4/main.go
https://www.geeksforgeeks.org/manachers-algorithm-linear-time-longest-palindromic-substring-part-1
https://www.geeksforgeeks.org/manachers-algorithm-linear-time-longest-palindromic-substring-part-2/