package hangshu;
/*
* 打印從1900年到2、year年的日歷
*/
import java.util.Scanner;
public class Calender {
public static int year = Integer.MIN_VALUE;
public static int month = Integer.MIN_VALUE;
private static int[] m = {31,28,31,30,31,30,31,31,30,31,30,31};
public static void main(String[] args) {
// TODO Auto-generated method stub
InputYearAndAay(); //輸入年月
printBiaotou(); //打印表頭
printCanlender(); //打印日歷
}
//打印日歷
private static void printCanlender() {
int sum=getSumYear();
sum+=getSumMonth();
int count = sum%7;
for(int i=0;i<=count-1;i++)
System.out.print("\t");
for(int i=1;i<=m[month-1];i++)
{
System.out.print(i+"\t"); if(sum%7 == 6) System.out.print("\n"); sum++;
}
}
//計算year總天數
private static int getSumYear(){
int sum = 0;
for(int i=1900;i<year;i++)
{
sum+=365;
if(Judge(year))
sum++;
}
return sum;
}
//計算month的總天數
private static int getSumMonth() {
int sum = 0;
for(int i=0;i<month-1;i++)
{
sum+=m[i];
}
if(Judge(year) && month>2)
sum++;
sum++; //要計算1900年到year年month—1的天數
return sum;
}
//打印表頭
private static void printBiaotou() {
String[] mon = {"一月","二月","三月","四月","五月","六月","七月","八月","九月","十月","十一月","十二月"};
String[] week = {"星期一 ","星期二 ","星期三 ","星期四 ","星期五 ","星期六 ","星期日"};
System.out.println(year+"年"+" "+mon[month-1]); for(int i=0;i<7;i++)
System.out.print(week[i]+"\t");
System.out.println();
}
//輸入年月
private static void InputYearAndAay(){
Scanner input = new Scanner(System.in);
System.out.print("請輸入年份：");
year = input.nextInt();
System.out.print("請輸入月份：");
month = input.nextInt();
input.close();
input = null;
}
//判斷是否閏年
private static boolean Judge(int year) {
return year%4 == 0 && year%100 != 0 || year%400 == 0;
}
}