Java三天大鱼两天晒网

Posted 2021-03-06 Superman02

 1 package Demo;
 2 import java.util.Scanner;
 3 public class Demo01 {
 4     /*中国有句俗语叫“三天打鱼两天晒网”。某人从2019年1月1日起开始“三天打鱼两天晒网”问这个人在以后的某一天中是“打鱼"还是“晒网*/
 5     public static void main(String[] args){
 6         Scanner sc = new Scanner(System.in);//建立扫描器
 7         System.out.println("请输入年-月-日：");
 8         int year = sc.nextInt();
 9         int month = sc.nextInt();
10         int day = sc.nextInt();
11         if (year>=2019){
12             int jg = days(year,month,day);
13             System.out.println("第"+jg+"天");
14             if (jg % 5 == 1 || jg % 5 == 2 || jg % 5 ==3){
15                 System.out.println("打鱼");
16             }
17             else{
18                 System.out.println("晒网");
19             }
20         }
21 
22         //System.out.println("您输入的"+year+"年"+month+"月"+day+"日");
23     }
24     public static int days(int year,int month,int day){
25         int[] Month= {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
26         //计算2019-1-1的总天数
27         int sum = 0;
28         for (int i = 2019; i < year; i++)
29         {
30             if (i % 4 == 0 && i % 100 !=0 || i % 400 == 0)//判断是否闰年
31             {
32                 Month[1] = 29;
33             }
34             //计算该年有多少天 循环月
35             for(int j = 0; j <= 11; j++)
36             {
37                 sum+=Month[j];
38             }
39         }
40         //循环月
41         for (int i = 0; i < month-1; i++)
42         {
43             sum+=Month[i];
44         }
45         return sum+day;
46     }
47 }