因為第三章還沒有陣列和迴圈，所以只能用IF語句和組合數的方法來判別使用者是否匹配到數字。

import java.util.Scanner;
public class Lottery {

    public static void main(String[]args) {
     int lottery = (int)(Math.random() * 900)+100; //隨機生成100-999之間的數
     //Math.random()來獲得一個0.0到1.0之間的偽隨機數的double值，可以取到0 ，但不包括1。
     Scanner input = new Scanner(System.in);//呼叫Scanner類建立物件
 

     System.out.print("Enter your lottry pick (two digits):");

     int guess = input.nextInt();

     //Get digits from lottry
     int lotteryDigit1 = lottery / 100;
     int lotteryDigit2 = lottery / 10 %10;
     int lotteryDigit3 = lottery %10;

     //Get digits from guess

     int guessDigit1 = guess / 100
 
;
     int guessDigit2 = guess / 10 % 10;
     int guessDigit3 = guess % 10;

     System.out.println("The lottery number is :" + lottery);

     if(guess == lottery)
     {
         System.out.println("Exact match: you win $10,000");

     }
     else if(guessDigit1 == lotteryDigit1 && guessDigit2 == lotteryDigit3 && guessDigit3 == lotteryDigit2||
             guessDigit1 == lotteryDigit2 && guessDigit2 == lotteryDigit1 && guessDigit3 == lotteryDigit3||
             guessDigit1 == lotteryDigit2 && guessDigit2 == lotteryDigit3 && guessDigit3 == lotteryDigit1||
             guessDigit1 == lotteryDigit3 && guessDigit2 == lotteryDigit1 && guessDigit3 == lotteryDigit2||
             guessDigit1 == lotteryDigit3 && guessDigit2 == lotteryDigit2 && guessDigit3 == lotteryDigit1)
         System.out
 
.println("Match all digits: you win $3,000");
     else  if(guessDigit1 == lotteryDigit1 || guessDigit1 == lotteryDigit2 || guessDigit1 == lotteryDigit3||
              guessDigit2 == lotteryDigit1 || guessDigit2 == lotteryDigit2 || guessDigit2 == lotteryDigit3||
              guessDigit3 == lotteryDigit1 || guessDigit3 == lotteryDigit2 || guessDigit3 == lotteryDigit3)
         System.out.println("Match one digit: you win $1,000");
     else 
         System.out.println("Sorry,no match");
    }
}