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.

[Q]: [281, 273, 442, 29, 37, 109, 31, 456, 306, 261, 269, 346, 220, 96, 371, 468, 224, 47, 377, 32]
[A]: [281, 273, 442, 468, 37, 109, 31, 456, 306, 261, 269, 346, 220, 96, 371, 29, 224, 47, 377, 32]

[Q]: [360, 195, 110, 450, 104, 17, 156, 344, 274, 289, 100, 277, 245, 381, 248, 172, 73, 238, 253, 357]
[A]: [360, 195, 110, 17, 104, 450, 156, 344, 274, 289, 100, 277, 245, 381, 248, 172, 73, 238, 253, 357]

[Q]: [327, 436, 340, 301, 485, 256, 28, 448, 492, 271, 276, 431, 130, 359, 91, 221, 319, 87, 157, 224]
[A]:
[327, 436, 340, 301, 485, 256, 492, 448, 28, 271, 276, 431, 130, 359, 91, 221, 319, 87, 157, 224]