You are given a list nums of n integers, and every number is between 1 and n. Some numbers may appear more than once, so some numbers from 1 to n are missing. Return all the missing numbers. You may return them in any order.
Examples
Example 1:
Input: nums = [2,2,5,5,1]
Output: [3,4]
Explanation: Here n = 5. The numbers 3 and 4 never appear.
Example 2:
Input: nums = [1,1,1]
Output: [2,3]
Explanation: Here n = 3. The numbers 2 and 3 never appear.
Example 3:
Input: nums = [4,3,2,1]
Output: []
Explanation: Every number from 1 to 4 appears, so the answer is empty.