프로그래머스 나누어 떨어지는 숫자 배열

#include <string>
#include <vector>
#include <algorithm>
#include <iostream>


using namespace std;

vector<int> solution(vector<int> arr, int divisor) {
    vector<int> answer;
    for (int i =0; i< arr.size(); i++)
    {
        if (arr[i] % divisor == 0)
            answer.push_back(arr[i]);
    }
    sort(answer.begin(), answer.end());
    if (answer.size() == 0)
        answer.push_back(-1);
    return answer;
}