Write a function that takes a string as input and returns the string reversed.
Example 1:
Input: "hello" Output: "olleh"
Example 2:
Input: "A man, a plan, a canal: Panama" Output: "amanaP :lanac a ,nalp a ,nam A"
Python
 
class Solution(object):
    def reverseString(self, s):
        """
        :type s: str
        :rtype: str
        """
        return s[::-1]