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: ['103', '355', '417', 'e', '359', 'c', 'w', 'q', '237', '93', '431', '59', 'l', '121']

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

PROBLEM: ['d', '351', '357', 'q', 'b', '19', 'r', '231', '381', 'x', 'a', 'y', '263']

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

PROBLEM: ['l', '201', 's', 'y', 'b', '395', '19']

SOLUTION:
0, 1, 2, 3, 5, 9