- Return the longest palindromic substring. Time Complexity: O (n^3), where `n` is the length of `s`. - Generating all substrings takes O (n^2). - Checking if each substring is a palindrome takes O (n ...

# Given a string S, find the longest palindromic substring in S. # You may assume that the maximum length of S is 1000, # and there exists one unique longest palindromic substring ...