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