日期累加

[编程题]日期累加

热度指数：45641 时间限制：C/C++ 1秒，其他语言2秒空间限制：C/C++ 32M，其他语言64M
算法知识视频讲解

设计一个程序能计算一个日期加上若干天后是什么日期。

输入描述:

输入第一行表示样例个数m，接下来m行每行四个整数分别表示年月日和累加的天数。

输出描述:

输出m行，每行按yyyy-mm-dd的个数输出。

示例1

输入

1
2008 2 3 100

输出

2008-05-13

算法知识视频讲解

Java

LHC0512

Java

import java.text.DecimalFormat;
import java.time.LocalDate;
import java.time.temporal.ChronoUnit;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        for (int i = 0; i < n; i++) {
            int year = scanner.nextInt();
            int month = scanner.nextInt();
            int day = scanner.nextInt();
            int num = scanner.nextInt();
            LocalDate date = LocalDate.of(year, month, day);
            LocalDate date1 = date.plus(num, ChronoUnit.DAYS);
            DecimalFormat f = new DecimalFormat("00");
            System.out.println(date1.getYear()+"-"+f.format(date1.getMonth().getValue())+"-"+f.format(date1.getDayOfMonth()));
        }

    }
}

发表于 2020-03-19 22:57:42 回复(0)

Java

香蕉苹果橘子汁



	import java.util.Scanner;



	public class Main {
 public static void main(String[] args) {
  Scanner sc = new Scanner(System.in);
  int m = sc.nextInt();
  for (int i = 0; i < m; i++) {
   int year = sc.nextInt();
   int month = sc.nextInt();
   int day = sc.nextInt();
   int s = sc.nextInt();
   boolean flag=true;
   while (flag) {



	    switch (month) {
    case 2:
     if (leapYear(year)) {
      if (s > 29 - day) {
       s = s - (29 - day);
       month++;
       if (month > 12) {
        month = month - 12;
        year++;
       }
       day = 0;
      } else {
       day = day + s;
       flag=false;
      }
     } else {
      if (s > 28 - day) {
       s = s - (28 - day);
       month++;
       if (month > 12) {
        month = month - 12;
        year++;
       }
       day = 0;
      } else {
       day = day + s;
      }
     }
     break;
    case 1:
    case 3:
    case 5:
    case 7:
    case 8:
    case 10:
    case 12:
     if (s > 31 - day) {
      s = s - (31 - day);
      month++;
      if (month > 12) {
       month = month - 12;
       year++;
      }
      day = 0;
     } else {
      day = day + s;
      flag=false;
     }
     break;
    case 4:
    case 6:
    case 9:
    case 11:
     if (s > 30 - day) {
      s = s - (30 - day);
      month++;
      if (month > 12) {
       month = month - 12;
       year++;
      }
      day = 0;
     } else {
      day = day + s;
      flag=false;
     }
     break;



	    }
   }
            if(month<10){
                if(day<10){
                    System.out.println(year+"-0"+month+"-0"+day);
                }else{
                    System.out.println(year+"-0"+month+"-"+day);
                }
                
            }else{
                if(day<10){
                    System.out.println(year+"-"+month+"-0"+day);
                }else{
                    System.out.println(year+"-"+month+"-"+day);
                }
            }
   



	  }



	 }



	 public static boolean leapYear(int year) {
  if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) {
   return true;
  } else {
   return false;
  }
 }
}

发表于 2019-03-19 20:09:06 回复(0)

Java

夹着尾巴的猫

要善于使用API，但请注意Java日历是格里高利历和罗马儒略历，一年中的第一个月是 JANUARY，它为 0，所以注意减1。

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        DateFormat format = new SimpleDateFormat("yyyy-MM-dd");
        int total;
        int year, mouth, day, plus;

        int caseNum = 0;

        Calendar calendar = Calendar.getInstance();
        total = scanner.nextInt();
        while (caseNum++ < total) {
            year = scanner.nextInt();
            mouth = scanner.nextInt();
            day = scanner.nextInt();
            plus = scanner.nextInt();
            calendar.set(Calendar.YEAR, year);
            calendar.set(Calendar.MONTH, mouth - 1);
            calendar.set(Calendar.DATE, day);
            calendar.add(Calendar.DAY_OF_MONTH, plus);
            System.out.println(format.format(calendar.getTime()));
        }
    }
}

发表于 2019-03-05 17:09:25 回复(1)