上机作业。

1.

package asd;
import java.util.Scanner;
public class cc {

 public static void main(String[] args) {
  // TODO Auto-generated method stub
  System.out.println("请输入");
  Scanner s = new Scanner(System.in);
     int x=  s.nextInt();
     if(x==1 || x==5 || x==10) {
         System.out.println("x="+x);
     }else {
         System.out.println("x=none");
     }
 }
}

2.

package asd；

 

import java.util.Scanner;

 

public class cc{

    public static void main(String[] args) {

        // TODO Auto-generated method stub

        Scanner input =new Scanner(System.in);

         

        System.out.print("请输入一个数字:");

         

        int i = input.nextInt();

         

        switch(i){

            case 1:

                System.out.println("x="+i);

                break;

            case 5:

                System.out.println("x="+i);

                break;

            case 10:

                System.out.println("x="+i);

                break;

            default:

                System.out.println("x=none");

                break;

        }

 

    }

 

}

3.

package asd;
import java.util.Scanner;
public class cc {

 public static void main(String[] args) {
  // TODO Auto-generated method stub
  System.out.println("请输入");
  Scanner s = new Scanner(System.in);
     int x=  s.nextInt();
     if(x%5==0&&x%6==0) {
         System.out.println("能被5和6整除");
     }else if(x%5==0&&x%6!=0) {
         System.out.println("能被5整除");
     }else if(x%6==0&&x%5!=0) {
         System.out.println("能被6整除");
     }else if(x%5!=0&&x%6!=0) {
         System.out.println("不能被5或6整除");
   }
  }
}

4.

package asd;

import java.util.Scanner;

public class cc {
    

    public static void main(String[] args){
        Scanner sc=new Scanner(System.in);
        System.out.println(" 输入分数:");
        Scanner input = new Scanner(System.in);
        int x=input.nextInt();
        if(x<0||x>100){
                  System.out.println("无效");
              }else if(x>=90){
                  System.out.println("A");
              }else if(x>=80){
                  System.out.println("B");
              }else if(x>=70){
                  System.out.println("C");
              }else if(x>=60){
                  System.out.println("D");
              }else if(x<60){
                  System.out.println("E");
      }
        
      }
      }

5.

package asd；
import java.util.Scanner;
public class cc {
    public static void main(String[] args) {
        Scanner input=new Scanner(System.in);
        System.out.println("输入x的值");
        int x=input.nextInt();
        System.out.println("输入y的值");
        int y=input.nextInt();
        System.out.println("输入z的值");
        int z=input.nextInt();
        if(x>y&&y>z){
            System.out.println("输出"+z+","+y+","+x);
        }else if(y>x&&x>z){
            System.out.println("输出"+y+","+z+","+x);
        }else if(z>x&&x>y){
            System.out.println("输出"+y+","+x+","+z);
        }else if(y>z&&z>x){
            System.out.println("输出"+x+","+z+","+y);
        }else if(x>z&&z>y){
            System.out.println("输出"+y+","+z+","+x);
        }else if(z>y&&y>x){
            System.out.println("输出"+x+","+y+","+z);
        }
    }
}