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: ['j', 'w', 'h', 'r', 'w', 'h', 'd', 'f', '81', 'g', '145']

SOLUTION: 1, 4, 5, 8

PROBLEM: ['v', '467', 'm', '23', '479', '49', 'k', 'u', 'l', '119']

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

PROBLEM: ['175', 'e', '149', '209', '221', '185', '255', 't']

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