(1)import java.util.Scanner;
public class gzy2008 {
public static void main(String[] args) {
int i;
int sum = 0;
int xingQi;
System.out.println("*****************************欢迎使用万年历*****************************\n");
Scanner input = new Scanner(System.in);
for(int g=1;g<=10000;g++){
System.out.print("请选择年份:\t");
int year = input.nextInt();
System.out.print("\n请选择月份:\t");
int month = input.nextInt();
if(month>=13||year<1900){
System.out.println("对不起，您输入的月份或年份不正确！");
continue;
}
for (i = 1900; i < year; i++){
if (i % 4 == 0 && i % 100 != 0 || i % 400 == 0){
sum = sum + 366;
}else {
sum = sum + 365;
}
}
if (month < 3){
sum = sum + (month-1) * 31;
}else if (month < 8){
if (year%4==0&&year%100!=0||year%400==0){
sum = sum + 31 + 29 + (month - 3) * 30 + (month - 2) / 2;
}else {
sum = sum + 31 + 28 + (month - 3) * 30 + (month - 2) / 2;
}
}else {
if (year%4==0&&year%100!=0||year%400==0){
sum = sum + 213 + (month - 8) * 30 + (month - 7) / 2;
}else {
sum = sum + 213 + (month - 8) * 30 + (month - 7) / 2;
}
}
xingQi = sum % 7 + 1; //当月第一天是星期几；
if (xingQi == 7){
xingQi = xingQi -7;
}
System.out.println("星期日\t星期一\t星期二\t星期三\t星期四\t星期五\t星期六");
for (int j = 0;j < xingQi;j++){
System.out.print(" \t");
}
int days;
if (month == 1||month == 3||month == 5||month == 7||month == 8||month == 10||month == 12){
days = 31;
}else if(month == 4||month == 6||month == 9||month == 11){
days = 30;
}else if((month == 2) && (year % 4 == 0 && year % 100 != 0 || year % 400 == 0)){
days = 29;
}else {
days = 28;
}
for (int m = 1;m <= days;m++){
int xingQiM = xingQi + ((m - 1)%7);
if (xingQiM == 6){
System.out.print(m + "\n");
}else {
System.out.print(m + "\t");
}
}
System.out.println("\n\n");
}
}
}
(2)
import java.util.Scanner;
public class gzy2008 {
public static void main(String[] args) {
System.out.println("******************欢 迎 使 用 万 年 历******************");
Scanner input = new Scanner(System.in);
for (int g = 1; g <= 1000; g++) {
System.out.print("\n请选择年份： ");
int year = input.nextInt();
System.out.print("\n请选择月份： ");
int month = input.nextInt();
if (year < 1900 || month >= 13) {
System.out.println("对不起，您输入年份或者月份出错！");
break;
}
int days = 0; // 存储当月的天数
boolean isRn;
/* 判断是否是闰年 */
if (year % 4 == 0 && !(year % 100 == 0) || year % 400 == 0) { // 判断是否为闰年
isRn = true; // 闰年
} else {
isRn = false;// 平年
}
/* 计算输入的年份之前的天数 */
int totalDays = 0;
for (int i = 1900; i < year; i++) {
/* 判断闰年或平年，并进行天数累加 */
if (i % 4 == 0 && !(i % 100 == 0) || i % 400 == 0) { // 判断是否为闰年
totalDays = totalDays + 366; // 闰年366天
} else {
totalDays = totalDays + 365; // 平年365天
}
}
/* 计算输入月份之前的天数 */
int beforeDays = 0;
for (int i = 1; i <= month; i++) {
switch (i) {
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
days = 31;
break;
case 2:
if (isRn) {
days = 29;
} else {
days = 28;
}
break;
default:
days = 30;
break;
}
if (i < month) {
beforeDays = beforeDays + days;
}
}
totalDays = totalDays + beforeDays; // 距离1900年1月1日的天数
/* 计算星期几 */
int firstDayOfMonth; // 存储当月第一天是星期几：星期日为0，星期一~星期六为1~6
int temp = 1 + totalDays % 7; // 从1900年1月1日推算
if (temp == 7) { // 求当月第一天
firstDayOfMonth = 0; // 周日
} else {
firstDayOfMonth = temp;
}
/* 输出日历 */
System.out.println("星期日\t星期一\t星期二\t星期三\t星期四\t星期五\t星期六");
for (int nullNo = 0; nullNo < firstDayOfMonth; nullNo++) {
System.out.print("\t"); // 输出空格
}
for (int i = 1; i <= days; i++) {
System.out.print(i + "\t");
if ((totalDays + i - 1) % 7 == 5) { // 如果当天为周六，输出换行
System.out.println();
}
}
}
}
}
public boolean isRunNian(int i)
{
boolean flag = false;
if (i % 4 == 0 && !(i % 100 == 0) || i % 400 == 0) {
flag = true;
}
return flag;
}
}
