# LeetCode - 1304. Find N Unique Integers Sum up to Zero
### 題目網址：https://leetcode.com/problems/find-n-unique-integers-sum-up-to-zero/
###### tags: `LeetCode` `Easy` `數學`

/*
    -LeetCode format-
    Problem: 1304. Find N Unique Integers Sum up to Zero
    Difficulty: Easy
    
    by Inversionpeter
*/



class Solution {
public:
    vector<int> sumZero(int n) {
        int half = n >> 1;
        vector <int> answer; answer.reserve(n);
        for (int i = 1; i <= half; ++i) {
            answer.push_back(i);
            answer.push_back(-i);
        }
        if (n & 1)
            answer.push_back(0);
        return answer;
    }
};