题目:输入年份,月份,日,判断这一天是这一年的第几天?(闰年的2月份为29天,平年为28天)
public class Runnian { /** * 能被4整除且不能被100整除或者能被400整除的年份为闰年 * @param args */ public static void main(String[] args) { System.out.println("请输入年,月,日"); Scanner sc1=new Scanner(System.in); int year=sc1.nextInt(); Scanner sc2=new Scanner(System.in); int month=sc2.nextInt(); Scanner sc3=new Scanner(System.in); int day=sc3.nextInt(); int totalDay=0; for(int i=1;i<month;i++){ totalDay+=getMonthDay(year,i); System.out.println("总天数为"+totalDay); } System.out.println("总天数为"+(totalDay+day)); } public static int getMonthDay(int year,int month){ boolean flag=isRunnian(year); if(month==2){ if(flag==true){ return 29; }else{ return 28; } }else if(month==4||month==6||month==9||month==11){ return 30; }else{ return 31; } } public static boolean isRunnian(int year){ if((year%4==0&&year%100!=0)||(year%400==0)){ return true; }else{ return false; } } }