10.9

import java.util.Scanner;

public class AdditionQuiz {

    public static void main(String[] args) {
        // TODO 自动生成的方法存根
        int number1=(int)(System.currentTimeMillis()%10);
        int number2=(int)(System.currentTimeMillis()/7%10);
        Scanner input=new Scanner(System.in);
        System.out.println("What is "+number1+"+"+number2+"?");
        int answer=input.nextInt();
        System.out.println(number1+"+"+number2+"="+answer+" is "+(number1+number2==answer));
        
    }

}

package cn.wzx.www;

import java.util.Scanner;

public class SimpleIfDemo {

    public static void main(String[] args) {
        // TODO 自动生成的方法存根
        Scanner input=new Scanner(System.in);
        System.out.println("请输入一个数:\n");
        int number=input.nextInt();
        if(number%5==0)
            System.out.println("HiFive");
        if(number%2==0)
            System.out.println("HiEven");

    }

}

package cn.wzx.www;

import java.util.Scanner;

public class SubtractionQuiz {

public static void main(String[] args) {
// TODO 自动生成的方法存根
int number1=(int)(Math.random()*10);
int number2=(int)(Math.random()*10);
if(number1<number2)
{
int temp=number1;
number1=number2;
number2=temp;
}
System.out.println("What is"+number1+"-"+number2+"?");
Scanner input=new Scanner(System.in);
int answer=input.nextInt();
if(number1-number2==answer)
System.out.println("答案正确");
else
{
System.out.println("答案错误");
System.out.println(number1+"-"+number2+"应该是"+(number1-number2));
}
}

}

package cn.wzx.www;

import java.util.Scanner;

public class ComputeAndInterpretBMI {

    public static void main(String[] args) {
        // TODO 自动生成的方法存根
        Scanner input=new Scanner(System.in);
        System.out.println("输入你的重量:\n");
        double weight=input.nextDouble();
        System.out.println("输入你的身高:\n");
        double height=input.nextDouble();
        final double KILOGRAMS_PER_POUND=0.45359237;
        final double METERS_PER_INCH=0.0254;
        double weightInKilograms=weight*KILOGRAMS_PER_POUND;
        double heightInMeters=height*METERS_PER_INCH;
        double bmi=weightInKilograms/(heightInMeters*heightInMeters);
        System.out.println("BMI is "+bmi);
        if(bmi<18.5)
            System.out.println("偏瘦");
        else if(bmi<25.0)
            System.out.println("正常");
        else if(bmi<30.0)
            System.out.println("超重");
        else
            System.out.println("过胖");
        
        
    }

}

package cn.wzx.www;

import java.util.Scanner;

public class TestBooleanOperators {

    public static void main(String[] args) {
        // TODO 自动生成的方法存根
        Scanner input=new Scanner(System.in);
        System.out.println("请输入一个数:\n");
        int number=input.nextInt();
        if(number%2==0&&number%3==0)
            System.out.println(number + " 能被2和3整除");
        if(number%2==0||number%3==0)
            System.out.println(number + " 能被2或3整除");
        if(number%2==0^number%3==0)
            System.out.println(number + " 能被2或3整除,但不能同时整除");
    }

}

package cn.wzx.www;

import java.util.Scanner;

public class LeapYear {

    public static void main(String[] args) {
        // TODO 自动生成的方法存根
        Scanner input=new Scanner(System.in);
        System.out.println("请输入一个年份:\n");
        int year=input.nextInt();
        boolean isLeapYear=(year%4==0&&year%100!=0)||(year%400==0);
        System.out.println(year+"是闰年吗?  "+isLeapYear);
        
    }

}

package cn.wzx.www;

import java.util.Scanner;

public class Lottery {

    public static void main(String[] args) {
        // TODO 自动生成的方法存根
        int lottery=(int)(Math.random()*100);
        Scanner input=new Scanner(System.in);
        System.out.println("输入一个两位数:\n");
        int guess=input.nextInt();
        int lotteryDigit1=lottery/10;
        int lotteryDigit2=lottery%10;
        int guessDigit1=guess/10;
        int guessDigit2=guess%10;
        System.out.println("这个数字是"+lottery);
        if(guess==lottery)
            System.out.println("匹配到彩票的实际顺序，获奖金:10000元");
        else if(lotteryDigit2==guessDigit1&&lotteryDigit1==guessDigit2)
            System.out.println("匹配到彩票的所有数字，获奖金:3000元");
        else if(lotteryDigit1==guessDigit1||lotteryDigit2==guessDigit1||lotteryDigit2==guessDigit1||lotteryDigit2==guessDigit2)
            System.out.println("匹配到彩票的一个数字，获奖金:1000元");
        else
            System.out.println("抱歉，没中奖");
        


    }

}

package cn.wzx.www;

import java.util.Scanner;

public class ChineseZodiac {

    public static void main(String[] args) {
        // TODO 自动生成的方法存根
        Scanner input=new Scanner(System.in);
        System.out.println("输入年份:\n");
        int year=input.nextInt();
        switch (year%12)
        {
        case 0:System.out.println("monkey"); break;
        case 1:System.out.println("rooster"); break;
        case 2:System.out.println("dog"); break;
        case 3:System.out.println("pig"); break;
        case 4:System.out.println("rat"); break;
        case 5:System.out.println("ox"); break;
        case 6:System.out.println("tiger"); break;
        case 7:System.out.println("rabbit"); break;
        case 8:System.out.println("dragon"); break;
        case 9:System.out.println("snake"); break;
        case 10:System.out.println("horse"); break;
        case 11:System.out.println("sheep"); break;
        }
    }

}