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]: [382, 46, 60, 442, 155, 302, 345, 61, 277, 283, 393, 135, 452, 94, 322, 176, 64, 16, 121, 79]
[EX A]: [382, 46, 60, 442, 155, 302, 345, 61, 277, 283, 393, 135, 16, 94, 322, 176, 64, 452, 121, 79]

[EX Q]: [190, 62, 334, 175, 454, 358, 25, 495, 109, 282, 346, 244, 150, 96, 341, 128, 431, 120, 238, 416]
[EX A]:
[190, 62, 334, 175, 454, 358, 495, 25, 109, 282, 346, 244, 150, 96, 341, 128, 431, 120, 238, 416]