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: ['g', 'j', '239', 'w', 'q', 'm', 'a', 'l', 'n', 'p', 'i', 'r']

SOLUTION: 2, 3, 9

PROBLEM: ['189', 'z']

SOLUTION: 1, 8, 9

PROBLEM: ['f', '333', 'a', '309', 'f', 's', '441', 'f', '43', 'b', 'd', 'c', '297', '241', '365']

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