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.

[EX Q]: [314, 122, 249, 424, 38, 90, 272, 426, 97, 476, 491, 340, 312, 34, 311, 405, 438, 433, 301, 206]
[EX A]: [314, 122, 249, 424, 38, 90, 272, 426, 97, 476, 34, 340, 312, 491, 311, 405, 438, 433, 301, 206]

[EX Q]: [338, 79, 27, 229, 433, 471, 328, 497, 474, 322, 424, 42, 341, 393, 32, 479, 280, 493, 428, 103]
[EX A]: [338, 79, 497, 229, 433, 471, 328, 27, 474, 322, 424, 42, 341, 393, 32, 479, 280, 493, 428, 103]

[EX Q]: [30, 193, 300, 72, 114, 416, 41, 196, 45, 473, 181, 337, 258, 51, 128, 444, 466, 266, 310, 413]
[EX A]:
[473, 193, 300, 72, 114, 416, 41, 196, 45, 30, 181, 337, 258, 51, 128, 444, 466, 266, 310, 413]