You need to write a function that will return whether a single string can be rearranged to form a palindrome. A palindrome is a word, phrase, number, or other sequence of characters that reads the same forward and backward (ignoring spaces, punctuation, and capitalization). ### Constraints: - 1 <= s.length <= 2000 - The input string consists of lowercase alphabetic characters only. ### Examples: 1. Input: s = "civic" Output: true 2. Input: s = "ivicc" Output: true 3. Input: s = "hello" Output: false