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.

[463, 157, 394, 291, 236, 444, 476, 438, 339, 215, 398, 198, 326, 134, 195, 249, 239, 482, 268, 368]
[463, 157, 394, 291, 236, 444, 476, 438, 339, 215, 398, 198, 326, 482, 195, 249, 239, 134, 268, 368]

[265, 475, 341, 442, 418, 161, 53, 69, 485, 331, 436, 450, 144, 455, 98, 488, 333, 273, 221, 51]
[265, 475, 341, 442, 418, 161, 53, 69, 485, 331, 436, 450, 144, 455, 98, 51, 333, 273, 221, 488]

[304, 238, 225, 39, 179, 446, 165, 139, 69, 450, 51, 374, 188, 193, 68, 259, 433, 464, 127, 63]
[304, 238, 225, 464, 179, 446, 165, 139, 69, 450, 51, 374, 188, 193, 68, 259, 433, 39, 127, 63]