1278
872
595
406
public class Main{ public static void main(String a[]) { int[] arr = new int[21]; arr[1] = 1; arr[2] = 1; arr[3] = 2; for (int i = 1; i <18 ; i++) { arr[i+3] = arr[i+2]+arr[i]; } System.out.println(arr[20]); } }
这道题你会答吗?花几分钟告诉大家答案吧!
扫描二维码,关注牛客网
下载牛客APP,随时随地刷题