题解 | 压缩字符串(一)

class Solution 
{
public:
    string compressString(string param) 
    {
        string ret;
        int left = 0, right = 0;
        while(right < param.size())
        {
            while(right >= left && right < param.size() && param[left] == param[right])
                right++;
            ret += param[left];
            if(right - left > 1)
                ret += to_string(right - left);
            left = right;
        }
        return ret;
    }
};