TASK DEFINITION: In this task, you are given an input list A. You need to extract and sort the unique digits used in the list in ascending order. Return -1 if there is no digit in the list.
PROBLEM: ['197', 'q']

SOLUTION: 1, 7, 9

PROBLEM: ['239', 's', 'h', 'w', '131', 'i', 'x']

SOLUTION: 1, 2, 3, 9

PROBLEM: ['367', 'j', 'y', '495', '47', '35', 'g', 'g', '99', '487', '207', 'j', 'a', '155']

SOLUTION:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9