old_contents: class Solution:
      # @param s : A string
      # @return : A string
      def reverseWords(self, s):
          # write your code here
new_contents: class Solution:
      # @param s : A string
      # @return : A string
      def reverseWords(self, s):
          # write your code here
          f=s.split("");
          reverse(f);
          return f.str();
subject: Revise 53