1 std::vector<std::string> split(const std::string &input) {
2 const std::string alpha {"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"};
3 std::vector<std::string> result;
4 size_t begin = 0;
5 while (begin < input.size()) {
6 if ((begin = input.find_first_of(alpha, begin)) == std::string::npos) {
7 break;
8 }
9 size_t end;
10 if ((end = input.find_first_not_of(alpha, begin)) == std::string::npos) {
11 result.push_back(input.substr(begin));
12 break;
13 }
14 result.push_back(input.substr(begin, end - begin));
15 begin = end + 1;
16 }
17 return result;
18 }
