unique-integers.cpp

vector<int> sumZero(int n) {
        if (n == 0 || n == 1) return std::vector<int>(1, 0);;
            
            std::vector<int> result;
            
            for (int i = 1; i <= n/2; i++) {
                    result.push_back(i);
                    result.push_back(-i);
            }
            
            if ((n%2) == 1) result.push_back(0);
            
            return result;
}