[프로그래머스] 배열 두 배 만들기

#include <string>
#include <vector>

using namespace std;

vector<int> solution(vector<int> numbers) {
    vector<int> answers;
    
    for(auto iter=numbers.begin(); iter<numbers.end();iter++)
        answers.push_back((*iter)*2);

    return answers;
}