count and say

class Solution {
public:
    string countAndSay(int n) {
        string s = "1";
        for (int ii = 0; ii < n-1; ++ii) {
            s = getNext(s);
        }
        return s;
       
    }
   
    string getNext(string s) {
        string say = "";
        for(int ii = 0; ii < s.size(); ++ii) {
            int repeat = countRepeat(s, ii);
            say.push_back(repeat + '0');
            say.push_back(s[ii]);
            ii += repeat-1;
        }
        return say;
    }
   
    unsigned int countRepeat(string s, unsigned int pos) {
        char c = s[pos];
        int ii = pos;
        for(; ii < s.size(); ++ii){
            if (s[ii] != c) break;
        }
        return ii - pos;
    }
};