Definition: In this task, you are given a list of unique integers you need to swap the positions of maximum and minimum element in the list and return the updated list.
Input: [447, 60, 249, 247, 486, 14, 193, 173, 451, 144, 12, 405, 308, 202, 132, 65, 160, 184, 348, 203]
Output:
[447, 60, 249, 247, 12, 14, 193, 173, 451, 144, 486, 405, 308, 202, 132, 65, 160, 184, 348, 203]