You are given an integer array `nums`. A number `x` is lonely when it appears only once, and no adjacent numbers (i.e. `x + 1` and `x - 1)` appear in the array.

Return all lonely numbers in `nums`. You may return the answer in any order.

Example 1:

    Input: nums = [10,6,5,8]
    Output: [10,8]
    Explanation:
    - 10 is a lonely number since it appears exactly once and 9 and 11 does not appear in nums.
    - 8 is a lonely number since it appears exactly once and 7 and 9 does not appear in nums.
    - 5 is not a lonely number since 6 appears in nums and vice versa.
    Hence, the lonely numbers in nums are [10, 8].
    Note that [8, 10] may also be returned.

Example 2:

    Input: nums = [1,3,5,3]
    Output: [1,5]
    Explanation:
    - 1 is a lonely number since it appears exactly once and 0 and 2 does not appear in nums.
    - 5 is a lonely number since it appears exactly once and 4 and 6 does not appear in nums.
    - 3 is not a lonely number since it appears twice.
    Hence, the lonely numbers in nums are [1, 5].
    Note that [5, 1] may also be returned.

Constraints:

- `1 <= nums.length <= 105`
- `0 <= nums[i] <= 106`