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.

Example input: [1,45,67,43,58,98,41,34,57]
Example output: [98,45,67,43,58,1,41,34,57]
Example explanation: 1 is the minimum element and 98 is the maximum element and their positions are swapped in the resulting list.
Q: [165, 22, 87, 424, 154, 434, 433, 149, 478, 426, 489, 275, 18, 320, 442, 318, 303, 104, 472, 29]
A:
[165, 22, 87, 424, 154, 434, 433, 149, 478, 426, 18, 275, 489, 320, 442, 318, 303, 104, 472, 29]