instruction:
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.
question:
[471, 416, 38, 475, 92, 200, 179, 165, 124, 194, 163, 55, 292, 161, 315, 177, 120, 91, 128, 29]
answer:
[471, 416, 38, 29, 92, 200, 179, 165, 124, 194, 163, 55, 292, 161, 315, 177, 120, 91, 128, 475]

question:
[53, 400, 447, 274, 435, 432, 46, 51, 317, 404, 442, 16, 70, 190, 449, 43, 356, 156, 175, 294]
answer:
[53, 400, 447, 274, 435, 432, 46, 51, 317, 404, 442, 449, 70, 190, 16, 43, 356, 156, 175, 294]

question:
[402, 206, 116, 203, 177, 470, 131, 168, 396, 66, 450, 225, 460, 314, 166, 426, 209, 467, 267, 389]
answer:
[402, 206, 116, 203, 177, 66, 131, 168, 396, 470, 450, 225, 460, 314, 166, 426, 209, 467, 267, 389]