题解 | #数组中只出现一次的两个数字#

class Solution {
public:
    /**
     * 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
     *
     * 
     * @param array int整型vector 
     * @return int整型vector
     */
    vector<int> FindNumsAppearOnce(vector<int>& array) {
        sort(array.begin(), array.end());
        map<int, int>mp;
        vector<int>ret;
        for (auto n : array) {
            if (mp.find(n) ==  mp.end()) {
                mp[n] = 1;
            } else {
                mp[n] = 2;
            }
        }
        map<int, int> :: iterator it;
        for (it = mp.begin(); it != mp.end(); it++) {
            if (it->second == 1) {
                ret.push_back(it->first);
            }
        }
       
        return ret;
        // write code here
    }
};