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 Input:
[221, 493, 17, 466, 353, 191, 141, 343, 347, 247, 78, 110, 342, 228, 492, 392, 61, 106, 104, 113]

Ex Output:
[221, 17, 493, 466, 353, 191, 141, 343, 347, 247, 78, 110, 342, 228, 492, 392, 61, 106, 104, 113]

Ex Input:
[124, 237, 236, 395, 482, 404, 446, 420, 132, 280, 310, 155, 306, 143, 44, 10, 235, 77, 15, 194]

Ex Output:
[124, 237, 236, 395, 10, 404, 446, 420, 132, 280, 310, 155, 306, 143, 44, 482, 235, 77, 15, 194]

Ex Input:
[68, 435, 375, 284, 153, 300, 34, 85, 196, 473, 150, 345, 17, 197, 319, 156, 144, 124, 99, 406]

Ex Output:
[68, 435, 375, 284, 153, 300, 34, 85, 196, 17, 150, 345, 473, 197, 319, 156, 144, 124, 99, 406]