import java.util.*;
class Solution {
public int[] solution(int[] numbers) {
List<Integer> list = new ArrayList<>();
for(int i = 0; i < numbers.length; i++){
int num = numbers[i];
for(int j = i + 1; j < numbers.length; j++){
int sum = num + numbers[j];
if(!list.contains(sum)){
list.add(sum);
}
}
}
Collections.sort(list);
return list.stream().mapToInt(Integer::intValue).toArray();
}
}