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: ['205', '107', 'z']

SOLUTION: 0, 1, 2, 5, 7

PROBLEM: ['e', 'l', 'p', 'e', '55', 'j', 'z', '217', 'v', '399', 's', '119']

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

PROBLEM: ['j', '259', 'r', '363', '149', 's', 'p', 'l', '271', '93', '205', 's', 'r', 'v', 'z']

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