270. 람다 배열로 연산을 바꿔 가며 누적 계산

1interface Op {
2    int run(int acc, int x);
3}
4 
5public class Main {
6    public static void main(String[] args) {
7        Op[] ops = {
8            (a, x) -> a + x,
9            (a, x) -> a * x,
10            (a, x) -> a - x
11        };
12        int[] xs = {2, 3, 4, 5};
13        int acc = 1;
14        for (int i = 0; i < xs.length; i++) {
15            Op op = ops[i % ops.length];
16            acc = op.run(acc, xs[i]);
17            System.out.println(acc);
18        }
19    }
20}