🐣 문제

링크 : https://school.programmers.co.kr/learn/courses/30/lessons/42746

🐥 코드

#include <string>
#include <vector>
#include <algorithm>
#include <sstream>
using namespace std;

bool cmp(string a, string b) {
    return a + b > b + a;
}

string solution(vector<int> numbers) {
    string answer = "";
    vector<string> v;

    for(int i: numbers) v.push_back(to_string(i));
 
    sort(v.begin(), v.end(), cmp);

    for(string str: v) answer+=str;
    
    if (answer[0] == '0') return "0";
    
    return answer;
}