题目9 打印日期

 1 import java.util.Scanner;
 2
 3 public class Main{
 4     private static int isLeap(int year){
 5         if(year%4==0&&year%100!=0||year%400==0) return 1;
 6         else return 0;
 7     }
 8     private static int[][] dayOfMonth={
 9         {0,0},
10         {31,31},
11         {28,29},
12         {31,31},
13         {30,30},
14         {31,31},
15         {30,30},
16         {31,31},
17         {31,31},
18         {30,30},
19         {31,31},
20         {30,30},
21         {31,31},
22     };
23     public static void main(String[] args) {
24         Scanner in=new Scanner(System.in);
25         while(in.hasNext()){
26             int year=in.nextInt();
27             int flag=isLeap(year);
28             int count=in.nextInt();
29             int month=1;
30
31             while(count>dayOfMonth[month][flag]){
32                 count-=dayOfMonth[month][flag];
33                 month++;
34             }
35             int day=count;
36
37             String y=year+"";
38             if(y.length()==1) y="000"+y;
39             else if(y.length()==2) y="00"+y;
40             else if(y.length()==3) y="0"+y;
41             String m=month+"";
42             if(m.length()==1) m="0"+m;
43             String d=day+"";
44             if(d.length()==1) d="0"+d;
45             System.out.println(y+"-"+m+"-"+d);
46         }
47     }
48 }
49 /**************************************************************
50     Problem: 1186
51     User: 0000H
52     Language: Java
53     Result: Accepted
54     Time:930 ms
55     Memory:60392 kb
56 ****************************************************************/