code: def reverse(self, array_s, begin, end):
      for i in range((end - begin) / 2):
          array_s[begin + i], array_s[end - i - 1] = (
              array_s[end - i - 1],
              array_s[begin + i],
          )
  
label_desc: Use image node_id 2 for calling the Solution obj's underlying member method code with example usage: obj.reverse(array_s, begin, end) without return types