Lv1_두개뽑아서더하기.cpp

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

vector<int> solution(vector<int> numbers) {
    vector<int> answer;
    
    for (int i = 0; i < numbers.size(); ++i) {
        for (int j = 0; j < numbers.size(); ++j) {
            if (i != j)
                answer.push_back(numbers[i]+numbers[j]);
        }
    }

    sort(answer.begin(), answer.end());
    answer.erase(unique(answer.begin(), answer.end()), answer.end());
    return answer;
}