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', 'd', '445', 'g', '263', '217', '357', 'c', '57', 'x']

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

PROBLEM: ['z', 'l', 's', '249', 'e', 'h', 'l']

SOLUTION: 2, 4, 9

PROBLEM: ['65', 'v', 'x', '321', 'k', 'z', '145', '231', 'a', '289']

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