第十一届蓝桥杯JavaA回文日期

第十一届蓝桥杯JavaA回文日期

import java.util.*;
public class Main {
	public static int [] MonthDay = {0,31,28,31,30,31,30,31,31,30,31,30,31};
	public static void main(String[] args) {
		int date,year,month,day;
		Scanner scanner = new Scanner(System.in);
		date = scanner.nextInt();
		year = date / 10000;
		month = year % 10 * 10 + year / 10 % 10;
		day = year / 1000 + year / 100 % 10 * 10;
		//该年对应的回文
		if(year * 10000 + month * 100 + day <= date)
			++year;
		//保证是当前日期之后
		while(true) {
			month = year % 10 * 10 + year / 10 % 10;
			day = year / 1000 + year / 100 % 10 * 10;
			if(legel(year,month,day)) {
				System.out.println(year * 10000 + month * 100 + day);
				break;
			}
			++year;
		}
		//找到第一个回文日期
		while(true) {
			month = year % 10 * 10 + year / 10 % 10;
			day = year / 1000 + year / 100 % 10 * 10;
			if(legel(year,month,day) && isab(year,month,day)) {
				System.out.print(year * 10000 + month * 100 + day);
				break;
			}
			++year;
		}
		//找到第一个ababbaba型的日期
	}
	public static boolean legel(int year,int month,int day) {
		if((year % 400 == 0) || (year % 4 == 0 && year % 100 != 0))
			MonthDay[2] = 29;
		else
			MonthDay[2] = 28;
		//以上是处理闰年
		if(month > 12 || month < 1)
			return false;
		//如果月份不满足那么就不是合法日期
		if(day > 0 && day <= MonthDay[month])
			return true;
		else
			return false;
		//日份不满足
	}
	public static boolean isab(int year,int month,int day) {
		if(year / 1000 == year % 100 / 10 && year % 100 / 10 == month % 10 && month % 10 == day % 10
		&& year / 100 % 10 == year % 10 && year % 10 == month / 10 && month / 10 == day / 10 && day % 10 != day / 10)
			return true;
		else
			return false;
	}
}

（（（java是真的难写，我太菜了