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.

Example Input: [244, 406, 385, 314, 323, 281, 46, 121, 195, 148, 124, 452, 414, 24, 296, 458, 301, 283, 293, 400]
Example Output: [244, 406, 385, 314, 323, 281, 46, 121, 195, 148, 124, 452, 414, 458, 296, 24, 301, 283, 293, 400]

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

Example Input: [224, 469, 451, 462, 389, 258, 265, 276, 470, 366, 128, 432, 36, 133, 159, 213, 317, 467, 248, 89]
Example Output:
[224, 469, 451, 462, 389, 258, 265, 276, 36, 366, 128, 432, 470, 133, 159, 213, 317, 467, 248, 89]