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import java.util.Scanner;
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class fundemo6{
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public static void main(String[] arg){
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Scanner s=new Scanner(System.in);
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System.out.println("Please input first date year:");
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int y1=s.nextInt();
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System.out.println("Please input first date month:");
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int m1=s.nextInt();
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System.out.println("Please input first date day:");
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int d1=s.nextInt();
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System.out.println("The first date you input is:"+y1+"-"+m1+"-"+d1);
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System.out.println("Please input second date year:");
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int y2=s.nextInt();
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System.out.println("Please input second date month:");
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int m2=s.nextInt();
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System.out.println("Please input second date day:");
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int d2=s.nextInt();
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System.out.println("The second date you input is:"+y2+"-"+m2+"-"+d2);
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System.out.println("sub days of two years is:"+subDays(y1,m1,d1,y2,m2,d2));
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}
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public static int getDays(int y,int m,int d){
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int sum=0;
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switch(m-1){
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case 11:sum+=30;
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case 10:sum+=31;
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case 9:sum+=30;
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case 8:sum+=31;
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case 7:sum+=31;
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case 6:sum+=30;
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case 5:sum+=31;
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case 4:sum+=30;
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case 3:sum+=31;
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case 2:if(isLeap(y))
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sum+=29;
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else
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sum+=28;
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case 1:sum+=31;
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}
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sum+=d;
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return sum;
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}
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public static boolean isLeap(int y){
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if(y%100!=0&&y%4==0||y%400==0)
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return true;
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return false;
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}
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public static int otherDays(int y,int m,int d){
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if(isLeap(y))
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return 366-getDays(y,m,d);
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return 365-getDays(y,m,d);
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}
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public static int subDays(int y1,int m1,int d1,int y2,int m2,int d2){
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if(y1==y1)
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int day1=getDays(y1,m1,d1)-getDays(y2,m2,d2);
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return abs(day1);
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}
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public static int abs(int n){
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return n>=0?n:-n;
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}
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来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/29135257/viewspace-2149455/ ，如需转载，请注明出处，否则将追究法律责任。
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