Leetcode 811. Subdomain Visit Count

easy, but string practice

There must be a better way, but I just wanted to practice string manipulation in C++.

Better Way

class Solution {
    unordered_map<string, int> hash;
public:
    vector<string> subdomainVisits(vector<string>& cpdomains) {
        for (int i=0; i<cpdomains.size(); i++) {
            string curr = cpdomains[i];
            size_t space= curr.find(' ');
            int count = std::stoi(curr.substr(0, space));
            string domain = curr.substr(space + 1);
            while(domain != "") {
                hash[domain] += count;    
                cout << domain << endl;
                size_t pos = domain.find('.');
                if (pos == string::npos) {
                    domain = "";
                } else {
                    domain = domain.substr(pos + 1);
                }
            }
        }
        
        vector<string> answer;
        for (auto const& [key, value]: hash) {
            string temp = to_string(value) + " " + key;
            answer.push_back(temp);
        }
        return answer;
    }
};