你加我我加你
经典判断字符串拼接

C++ 代码

class Solution {
public:
static bool cmp(string a,string b)

{
    return a+b<b+a;



}
    string printMinNumber(vector<int>& nums) {
        vector<string> t;
        string res;
        for(auto i:nums)
        t.push_back(to_string (i));

       sort(t.begin(),t.end(),cmp);

        for(auto i:t)
        res+=i;
        return res;
    }
};