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java题

news 来源：原创 2024/5/14 8:52:04

1.列出整数的各个位的数值
package com.company;
public class AriExer {
    public static void main(String[] args)
    {
        long i=12394;
        System.out.println("个位数："+i%10);
        System.out.println("个位数："+i%100/10);
        System.out.println("个位数："+i%1000/100);
        System.out.println("个位数："+i%10000/1000);
        System.out.println("万位数："+i/10000);
    }
}
2.把60转化为二进制和十六进制
package com.company;
public class bianhua
{
    public static void main(String[] args)
    {
        int i1=60;
        int i2=i1&15;
        String j=(i2>9)?(char)(i2-10+'A')+"" : i2+"";
        int temp=i1>>>4;
        i2=temp&15;
        String k=(i2>9)?(char)(i2-10+'A')+"" : i2+"";
        System.out.println(j+k);


    }
}

3.设计if-else结构

package com.company;
import java.util.Scanner;
public class If1Test {
    public static void main (String [] args)
    {
        Scanner scan =new Scanner(System.in);
        System.out.println("请输入小明的成绩");
        int score=scan.nextInt();
        if (score==100)
        {
            System.out.println("奖励一辆bmw");
        }
        else if (80<score&&score<100)
            System.out.println("一台iphone");
        else if(60<=score&&score<=80)
            System.out.println("奖励一台ipad");
        else
            System.out.println("啥也没有");
    }
}

4.排序基本：

package com.company;

import java.util.Scanner;
public class IfTest2 {
    public static void main (String [] args)
    {
        Scanner scan =new Scanner(System.in);
        System.out.println("请输入第一个整数");
        int num1=scan.nextInt();
        System.out.println("请输入第二个整数");
        int num2=scan.nextInt();
        System.out.println("请输入第三个整数");
        int num3=scan.nextInt();
        if (num1<num2)
        {
            if (num3>num2)
              System.out.println("最大值为：num3:" + num3 + "," + "排序大小为" + ","+num1 +","+ num2 + ","+num3);
            else {
                if (num3>num1)
                System.out.println("最大值为：num2:"+num2+","+"排序大小为"+","+num1+","+num3+","+num2);
                else
                    System.out.println("最大值为：num2:"+num2+","+"排序大小为"+","+num3+","+num1+","+num2);
            }
        }
        else {
            if (num1<num3)
                System.out.println("最大值为：num3:"+num3+","+"排序大小为"+","+num2+","+num1+","+num3);
            else {
                if (num3>num2)
                System.out.println("最大值为：num1:" + num1 + "," + "排序大小为" + ","+num2 + ","+num3 + ","+num1);
            else
                    System.out.println("最大值为：num1:"+num1+","+"排序大小为"+","+num3+","+num2+","+num1);
            }
        }
        }
}