leetcode

0 class Solution {

1 public:

2 string entityParser(const string &text) const {

3 unordered_map<string, char> um = {{"&quot;", '"'}, {"&apos;", '\''}, {"&amp;", '&'},

4 {"&gt;", '>'}, {"&lt;", '<'}, {"&frasl;", '/'}};

5

6 string res, crnt;

7 for (const char c : text) {

8 if (crnt.empty()) {

9 if (c != '&')

10 res += c;

11 else

12 crnt = "&";

13 } else {

14 if (c == '&') {

15 res += crnt;

16 crnt = "&";

17 } else {

18 crnt += c;

19 if (c == ';') {

20 if (um.count(crnt))

21 res += um[crnt];

22 else

23 res += crnt;

24 crnt.clear();

25 }

26 }

27 }

28 }

29

30 return res + crnt;

31 }

32 };