leetcode

0 class Solution {

1 public:

2 vector<string> uncommonFromSentences(string s1, string s2) {

3 unordered_map<string, int> um;

4 stringstream ss;

5 string t;

6

7 ss.str(s1);

8 while (ss >> t)

9 um[t]++;

10

11 ss.str(s2);

12 ss.clear();

13 while (ss >> t)

14 um[t]++;

15

16 vector<string> res;

17 for (auto &[str, cnt] : um)

18 if (cnt == 1) res.push_back(str);

19 return res;

20 }

21 };