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: ['175', 'q', 'h', 'z', 'v', 'y', '39', '419', '87', '425', 'z', '375']

SOLUTION: 1, 2, 3, 4, 5, 7, 8, 9

PROBLEM: ['w', '203', 'd', '133', 'i', 'j', 'd', 'u', 'u', 's', 'f', 'f', '221', '341', '299']

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

PROBLEM: ['495', 'y', '173', '231', '461', 'g', 'j']

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