Java作業(yè)的題與答案代碼5：計(jì)算機(jī)的出拳Random r= new Random();是否繼續(xù)購買？
package a1;
import java.util.Random;
import java.util.Scanner;
public class a1{
public static void main(String[] args) {//void：無返回
// TODO Auto-generated method stub
System.out.println("請(qǐng)輸入你的出拳：1.剪刀2.石頭3.布");
Scanner b=new Scanner(System.in);//聲明Scanner接收的類
int num1=b.nextInt();//接收用戶輸入整形的數(shù)據(jù)
Random r= new Random();
int a=r.nextInt(3)+1;
System.out.println("你的出拳是："+num1);
System.out.println("計(jì)算機(jī)的出拳是："+a);
if(num1-a==1||num1-a==-2){System.out.println("你贏了");
}
else if(num1-a==0){System.out.println("平局");
}
else{System.out.println("你輸了");
}
}
}
package a1;
import java.util.Scanner;
public class a1{
public static void main(String[] args) {
System.out.println("輸入一個(gè)年份");
Scanner b=new Scanner(System.in);
int z=b.nextInt();
if(z%4==0&&z%100!=0){
System.out.println("是閏年");}
else if(z%400==0){
System.out.println("是閏年");
}
else{
System.out.println("不是閏年");}
}
}
package a1;
import java.util.Scanner;
public class a1{
public static void main(String[] args) {
System.out.println("輸入一個(gè)年份");
Scanner b=new Scanner(System.in);
int z=b.nextInt();
if(z%4==0&&z%100!=0||z%400==0){
System.out.println("是閏年");}
else{
System.out.println("不是閏年");}
System.out.println("輸入一個(gè)月份");
Scanner b2=new Scanner(System.in);
int a=b2.nextInt();
switch(a) {
case 1:System.out.println("31天");break;
case 3:System.out.println("31天");break;
case 5:System.out.println("31天");break;
case 7:System.out.println("31天");break;
case 8:System.out.println("31天");break;
case 10:System.out.println("31天");break;
case 12:System.out.println("31天");break;
case 2:if(z%4==0&&z%100!=0||z%400==0){
System.out.println("29天");break;}
else{
System.out.println("28天");break;}
case 4:System.out.println("30天");break;
case 6:System.out.println("30天");break;
case 9:System.out.println("30天");break;
case 11:System.out.println("30天");break;
}
?
}
}
package a1;
import java.util.Scanner;
public class a1{
public static void main(String[] args) {
System.out.println("輸入年");
Scanner b=new Scanner(System.in);
int z=b.nextInt();
System.out.println("輸入月");
Scanner b2=new Scanner(System.in);
int z2=b2.nextInt();
System.out.println("輸入日");
Scanner b3=new Scanner(System.in);
int z3=b3.nextInt();
System.out.println("是"+z+"年"+z2+"月"+z3+"日");
int he=z3;
if(z%4==0&&z%100!=0||z%400==0){int[] arr;
arr=new int[12];
arr[0]=31;
arr[2]=31;
arr[4]=31;
arr[6]=31;
arr[7]=31;
arr[9]=31;
arr[11]=31;
arr[1]=29;
arr[3]=30;
arr[8]=30;
arr[10]=30;
arr[5]=30;
for(int i=0;i<z2;i++){
he=he+arr[z2];
}
System.out.println("有"+he+"天");}
else{{int[] arr;
arr=new int[12];
arr[0]=31;
arr[2]=31;
arr[4]=31;
arr[6]=31;
arr[7]=31;
arr[9]=31;
arr[11]=31;
arr[1]=28;
arr[3]=30;
arr[8]=30;
arr[10]=30;
arr[5]=30;
for(int i=0;i<z2;i++){
he=he+arr[z2-1];
}
System.out.println("有"+he+"天");}
}
?
}
}
?
package a1;
import java.util.Scanner;
public class a1{
public static void main(String[] args) {
System.out.println("輸入年");
Scanner b=new Scanner(System.in);
int z=b.nextInt();
System.out.println("輸入月");
Scanner b2=new Scanner(System.in);
int z2=b2.nextInt();
System.out.println("輸入日");
Scanner b3=new Scanner(System.in);
int z3=b3.nextInt();
System.out.println("是"+z+"年"+z2+"月"+z3+"日");
int he=z3;
if(z%4==0&&z%100!=0||z%400==0){int[] arr;
arr=new int[12];
arr[0]=31;
arr[2]=31;
arr[4]=31;
arr[6]=31;
arr[7]=31;
arr[9]=31;
arr[11]=31;
arr[1]=29;
arr[3]=30;
arr[8]=30;
arr[10]=30;
arr[5]=30;
for(int i=0;i<z2-1;i++){
he=he+arr[i];
}
/*arr[z2-1]? 即arr[i];沒arr[z2-2]，因?yàn)闆]下標(biāo)為-1的arr[-1]
* 輸入年
2019
輸入月
2
輸入日
2
是2019年2月2日
有33天*/
System.out.println("有"+he+"天");}
else{{int[] arr;
arr=new int[12];
arr[0]=31;
arr[2]=31;
arr[4]=31;
arr[6]=31;
arr[7]=31;
arr[9]=31;
arr[11]=31;
arr[1]=28;
arr[3]=30;
arr[8]=30;
arr[10]=30;
arr[5]=30;
for(int i=0;i<z2-1;i++){
he=he+arr[i];
}
System.out.println("有"+he+"天");}
}
?
}
}
package a1;
public class a1{
public static void main(String[] args) {
System.out.println();
int b=2006;
double a=80000;
while(a<=200000){a=a+a*0.25;
b++;
}
System.out.println(b+"年");}
?
}
package a1;
public class a1{
public static void main(String[] args) {
System.out.println();
int i =0;
while(i<5){System.out.println(i);
String[] ss={"1","2"};
System.out.println(ss[i]);
i++;
}
}
?
}
package a1;
public class a1{
public static void main(String[] args) {
int he =0;
int i =1;
while(i<=100){if(i%2==0){he=he+i;?
System.out.println((i/2)+"個(gè)偶數(shù)的和為"+he);}
i++;//{}要加對(duì)地方，或不加。
}
System.out.println(he);
}
?
}
package a1;
import java.util.Scanner;
public class a1{
public static void main(String[] args) {
System.out.println("選擇購買的商品編號(hào)1.T恤衫2.網(wǎng)球衫");
Scanner s=new Scanner(System.in);
int z=s.nextInt();
if(z==1){System.out.println("購買的是T恤衫");}
else if(z==2){System.out.println("購買的是網(wǎng)球衫");}
System.out.println("是否繼續(xù)購買？yes繼續(xù)購買no退出購買");
Scanner s2=new Scanner(System.in);
String z2=s2.next();
while(z2.equals("yes")){
System.out.println("繼續(xù)購買");
System.out.println("選擇購買的商品編號(hào)1.T恤衫2.網(wǎng)球衫");
Scanner s3=new Scanner(System.in);
int z3=s3.nextInt();
if(z3==1){System.out.println("購買的是T恤衫");}
else if(z3==2){System.out.println("購買的是網(wǎng)球衫");}
System.out.println("是否繼續(xù)購買？yes繼續(xù)購買no退出購買");
Scanner s4=new Scanner(System.in);
String z4=s4.next();
}
}
}
package a1;
import java.util.Scanner;
public class a1{
public static void main(String[] args) {
String a="yes";
while(a.equals("yes")){
System.out.println("選擇購買的商品編號(hào)1.T恤衫2.網(wǎng)球衫");
Scanner s=new Scanner(System.in);
int b=s.nextInt();
if(b==1){System.out.println("購買的是T恤衫");}
else if(b==2){System.out.println("購買的是網(wǎng)球衫");}
System.out.println("是否繼續(xù)購買？yes繼續(xù)購買no退出購買");
Scanner s2=new Scanner(System.in);
a=s2.next();
}
System.out.println("退出購買");
}
}
