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: ['381', '129']

SOLUTION: 1, 2, 3, 8, 9

PROBLEM: ['65', '195', 'k', '231', 'v', '359', '339', 'h', '405', '359', 'j']

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

PROBLEM: ['g', '319', 'l', 'c', '495']

SOLUTION:
1, 3, 4, 5, 9