배열의 합
Arrays.stream(arr).sum();
import java.util.Arrays;
class Solution {
public int solution(int[] numbers) {
int[] num = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
for (int n : num) {
for (int ns : numbers) {
if (n==ns) num[n]=0;
}
}
int answer = Arrays.stream(num).sum();
return answer;
}
}