1. 输入变量x的值，如果是1，输出x=1，如果是5，输出x=5，如果是 10，输出 x=10，除了以上几个值，都输出x=none
package hgj;
import java.util.Scanner;
public class dfg {
public static void main(String[] args) {
Scanner input= new Scanner(System.in);
System.out.println("请输入x的值");
int x=input.nextInt();
if(x==1 || x==5 || x==10) {
System.out.println("x="+x);
}else {
System.out.println("x=none");
}
}
}
package huaerzi;
import java.util.Scanner;
public class huada {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner huaer= new Scanner(System.in);
System.out.println("请输入a的值");
int a=huaer.nextInt();
switch(a) {
case 1:
case 5:
case 10:
System.out.println("a="+a);break;
default:
System.out.println("a=none");
System.out.println("a=none");}
}
}
package hgj;
import java.util.Scanner;
public class dfg {
public static void main(String[] args) {
Scanner input= new Scanner(System.in);
System.out.println("请输入这个数的值");
int x=input.nextInt();
if(x%5==0 && x%6==0) {
System.out.println(x+"能被5和6整除");
}else if(x%5==0 ){
System.out.println(x+"能被5整除");
}else if(x%6==0) {
System.out.println(x+"能被6整除");
}else {
System.out.println(x+"不能被5或6整除");
}
}
}
package huaerzi;
import java.util.Scanner;
public class huada {
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println("请输入一个整数");
Scanner scanner = new Scanner(System.in);
int grade = scanner.nextInt();
if ((grade>100)||(grade<0)) {
System.out.println("无效");
} else if ((grade>=80)&&(grade<90)) {
System.out.println("B");
} else if ((grade>=90)&&(grade<=100)) {
System.out.println("A");
} else if ((grade>=70)&&(grade<80)){
System.out.println("C");
} else if ((grade>=60)&&(grade<70)){
System.out.println("D");
}else System.out.println("E");
}
}
package xx;
import java.util.Scanner;
public class pika {
public static void main(String[] args) {
Scanner sc= new Scanner(System.in);
System.out.println("请输入x的值");
int x=sc.nextInt();
System.out.println("请输入y的值");
int y=sc.nextInt();
System.out.println("请输入z的值");
int z=sc.nextInt();
if(x>y && y>z) {
System.out.println("输出"+z+","+y+","+x);
}else if(x>z && z>y) {
System.out.println("输出"+y+","+z+","+x);
}else if(y>x && x>z) {
System.out.println("输出"+z+","+x+","+y);
}else if(y>z && z>x) {
System.out.println("输出"+x+","+z+","+y);
}else if(z>y && y>x) {
System.out.println("输出"+x+","+y+","+z);
}else if(z>x && x>y) {
System.out.println("输出"+y+","+x+","+z);
}
}
}