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.

[347, 362, 411, 393, 124, 247, 476, 248, 339, 363, 176, 401, 138, 388, 379, 291, 389, 455, 87, 263]
[347, 362, 411, 393, 124, 247, 87, 248, 339, 363, 176, 401, 138, 388, 379, 291, 389, 455, 476, 263]

[146, 354, 466, 465, 481, 390, 64, 176, 347, 420, 459, 386, 299, 468, 15, 161, 18, 422, 300, 188]
[146, 354, 466, 465, 15, 390, 64, 176, 347, 420, 459, 386, 299, 468, 481, 161, 18, 422, 300, 188]

[302, 130, 294, 366, 18, 311, 261, 263, 349, 160, 48, 323, 455, 177, 477, 384, 69, 377, 232, 107]

[302, 130, 294, 366, 477, 311, 261, 263, 349, 160, 48, 323, 455, 177, 18, 384, 69, 377, 232, 107]

