You are given an integer arraynums. The unique elements of an array are the elements that appearexactly oncein the array.
Returnthesumof all the unique elements ofnums.
Example 1:
Input: nums = [1,2,3,2]Output: 4Explanation: The unique elements are [1,3], and the sum is 4.
Example 2:
Input: nums = [1,1,1,1,1]Output: 0Explanation: There are no unique elements, and the sum is 0.
Example 3:
Input: nums = [1,2,3,4,5]Output: 15Explanation: The unique elements are [1,2,3,4,5], and the sum is 15.
Constraints:
1 <= nums.length <= 100