find-all-lonely-numbers-in-the-array

Find All Lonely Numbers in the Array

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findLonely

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

Return all lonely numbers in <code>nums</code>. You may return the answer in any order.

&nbsp;
Example 1:

<pre>
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.
</pre>

Example 2:

<pre>
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.
</pre>

&nbsp;
Constraints:

<ul>
	<li><code>1 &lt;= nums.length &lt;= 105</code></li>
	<li><code>0 &lt;= nums[i] &lt;= 106</code></li>
</ul>

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