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"
class Solution:
def reverseString(self, s):
"""
:type s: str
:rtype: str
"""
return s[::-1]