Detailed Instructions: 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:['u', 'f', '335', '313', '87', '453', 's', 'g', '469']
Solution:
1, 3, 4, 5, 6, 7, 8, 9