Given two 0-indexed integer arrays `nums1` and `nums2`, return a list `answer` of size `2` where:

- `answer[0]` is a list of all distinct integers in `nums1` which are not present in `nums2`.
- `answer[1]` is a list of all distinct integers in `nums2` which are not present in `nums1`.

Note that the integers in the lists may be returned in any order.

Example 1:

    Input: nums1 = [1,2,3], nums2 = [2,4,6]
    Output: [[1,3],[4,6]]
    Explanation:
    For nums1, nums1[1] = 2 is present at index 0 of nums2, whereas nums1[0] = 1 and nums1[2] = 3 are not present in nums2. Therefore, answer[0] = [1,3].
    For nums2, nums2[0] = 2 is present at index 1 of nums1, whereas nums2[1] = 4 and nums2[2] = 6 are not present in nums2. Therefore, answer[1] = [4,6].

Example 2:

    Input: nums1 = [1,2,3,3], nums2 = [1,1,2,2]
    Output: [[3],[]]
    Explanation:
    For nums1, nums1[2] and nums1[3] are not present in nums2. Since nums1[2] == nums1[3], their value is only included once and answer[0] = [3].
    Every integer in nums2 is present in nums1. Therefore, answer[1] = [].

Constraints:

- `1 <= nums1.length, nums2.length <= 1000`
- `-1000 <= nums1[i], nums2[i] <= 1000`