TASK DEFINITION: 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.
PROBLEM: [477, 200, 377, 405, 450, 137, 333, 139, 195, 52, 445, 154, 61, 63, 441, 455, 308, 354, 19, 340]

SOLUTION: [19, 200, 377, 405, 450, 137, 333, 139, 195, 52, 445, 154, 61, 63, 441, 455, 308, 354, 477, 340]

PROBLEM: [29, 411, 366, 438, 162, 117, 121, 436, 351, 344, 357, 420, 32, 464, 289, 395, 187, 132, 258, 425]

SOLUTION: [464, 411, 366, 438, 162, 117, 121, 436, 351, 344, 357, 420, 32, 29, 289, 395, 187, 132, 258, 425]

PROBLEM: [15, 100, 389, 471, 129, 112, 68, 70, 423, 81, 481, 334, 67, 80, 277, 93, 387, 391, 161, 434]

SOLUTION:
[481, 100, 389, 471, 129, 112, 68, 70, 423, 81, 15, 334, 67, 80, 277, 93, 387, 391, 161, 434]