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Make a Distinct Digit Array
Basic Accuracy: 24.99% Submissions: 68 Points: 1

Given an array nums of positive integers of size N. Find all distinct digits present in nums.

Example 1:

Input: nums = [131, 11, 48]
Output: 1 3 4 8
Explanation: 1, 3, 4, and 8 are only distinct
digits that can be extracted from the numbers
of the array.


Example 2:

Input: nums = [111, 222, 333, 4444, 666]
Output: 1 2 3 4 6
Explanation: 1, 2, 3, 4, and 6 are only distinct
digits that can be extracted from the numbers
of the array.


Your Task:
You don't need to read or print anything. Your task is to complete the function common_digits() which takes nums as input parameter and returns a list of digits which can be extracted from the given array in ascending order.

Expected Time Complexity: O(N)
Expected Space Complexity: O(1)

Constraints:
1 <= N <= 105
1 <= numsi <= 109

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Make a Distinct Digit Array