編寫一個程式，輸出一個月的日曆。
阿新 • • 發佈：2019-02-01
public class DisplayYueLi{
public static void main(String[] args){
Scanner sc=new Scanner(System.in);
String input1=sc.nextLine();
String[] input2=input1.split("-");
int year=Integer.parseInt(input2[0]);
int month=Integer.parseInt(input2[1]);
int fristDay=GetfristDay(year,month);//
int mDay=GetmDay(year,month);
DisplayYueLi(fristDay,mDay);
}
static int GetfristDay(int year,int month){
int zDays=0;
for(int i=1;i<year;i++){
if(i%4==0&&i%100!=0||i%400==0){
zDays=zDays+366;
}
else{
zDays=zDays+365;
}
}
for(int j=1;j<month;j++){
switch(j){
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
zDays=zDays+31;
break;
case 4:
case 6:
case 9:
case 11:
zDays=zDays+30;
break;
case 2:
if(year%4==0&&year%100!=0||year%400==0){
zDays=zDays+29;
}
else{
zDays=zDays+28;
}
}
}
int fristDay=(int)(zDays+1)%7;
// System.out.println("fristDay=" +fristDay);
return(fristDay);
}
static int GetmDay(int year,int month){
int mDay=0;
switch(month){
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
mDay=31;
break;
case 4:
case 6:
case 9:
case 11:
mDay=30;
break;
case 2:
if(year%4==0&&year%100!=0||year%400==0){
mDay=29;
}
else{
mDay=28;
}break;
}
return(mDay);
}
static void DisplayYueLi(int fristDay,int mDay){
String space=" ";
System.out.println(space+"日"+space+"一"+space+"二"+space+"三"+space+"四"+space+"五"+space+"六");
for(int m=0;m<fristDay;m++){
System.out.print(space+" ");
}
for(int n=1;n<=mDay;n++){
if((n+fristDay)%7==0&&n!=1){
if (n<10)
System.out.println(space+" "+n);
else
System.out.println(space+n);
}
else{
if (n<10)
System.out.print(space+" "+n);
else
System.out.print(space+n);
}
}
}
}
public static void main(String[] args){
Scanner sc=new Scanner(System.in);
String input1=sc.nextLine();
String[] input2=input1.split("-");
int year=Integer.parseInt(input2[0]);
int month=Integer.parseInt(input2[1]);
int fristDay=GetfristDay(year,month);//
int mDay=GetmDay(year,month);
DisplayYueLi(fristDay,mDay);
}
static int GetfristDay(int year,int month){
int zDays=0;
for(int i=1;i<year;i++){
if(i%4==0&&i%100!=0||i%400==0){
zDays=zDays+366;
}
else{
zDays=zDays+365;
}
}
for(int j=1;j<month;j++){
switch(j){
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
zDays=zDays+31;
break;
case 4:
case 6:
case 9:
case 11:
zDays=zDays+30;
break;
case 2:
if(year%4==0&&year%100!=0||year%400==0){
zDays=zDays+29;
}
else{
zDays=zDays+28;
}
}
}
int fristDay=(int)(zDays+1)%7;
// System.out.println("fristDay=" +fristDay);
return(fristDay);
}
static int GetmDay(int year,int month){
int mDay=0;
switch(month){
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
mDay=31;
break;
case 4:
case 6:
case 9:
case 11:
mDay=30;
break;
case 2:
if(year%4==0&&year%100!=0||year%400==0){
mDay=29;
}
else{
mDay=28;
}break;
}
return(mDay);
}
static void DisplayYueLi(int fristDay,int mDay){
String space=" ";
System.out.println(space+"日"+space+"一"+space+"二"+space+"三"+space+"四"+space+"五"+space+"六");
for(int m=0;m<fristDay;m++){
System.out.print(space+" ");
}
for(int n=1;n<=mDay;n++){
if((n+fristDay)%7==0&&n!=1){
if (n<10)
System.out.println(space+" "+n);
else
System.out.println(space+n);
}
else{
if (n<10)
System.out.print(space+" "+n);
else
System.out.print(space+n);
}
}
}
}