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package nn;
import java.util.*;
//import java.lang.*;
public class mm{
public static boolean judgeYear(int year) {
if (year % 400 == 0)
return true;
else if ((year % 4 == 0) && (year % 100 != 0))
return true;
else
return false;
}
public static int getWeekOfDate(int year, int month, int day) {
int week = -1;
int[] monthDay = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
boolean isLeapYear = false;
int sumDay = 0;
if (year >= 1900) {
for (int i = 1900; i < year; i++) {
if (judgeYear(i))
sumDay += 366;
else
sumDay += 365;
}
for (int i = 0; i < month - 1; i++) {
sumDay += monthDay[i];
}
if (month > 2) {
isLeapYear = judgeYear(year);
if (isLeapYear)
sumDay++;
}
sumDay += day;
week = sumDay % 7;
}
return week;
}
public static String convert(int week) {
String[] weekName = { "星期天", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" };
return weekName[week];
}
public static void main(String[] args) {
int year, month, day;
Scanner sc = new Scanner(System.in);
while (true) {
System.out.println("请输入年:以0结束");
year = sc.nextInt();
if (year == 0) {
System.out.println("结束!");
sc.close();
return;
}
if (year < 1900) {
System.out.println("请输入1900以后的年份");
continue;
}
System.out.println("请输入月:");
month = sc.nextInt();
while (month > 12 || month < 1) {
System.out.println("请输入1-12间的月份");
}
System.out.println("请输入日:");
day = sc.nextInt();
while (!(day > 0 && day < 32)) {
System.out.println("请输入1号到31号间的日期");
}
System.out.println();
int week = getWeekOfDate(year, month, day);
System.out.println(convert(week));
System.out.println();
}
}
}