if else 语句有问题...重要

Question

抱歉，我的标题有点宽泛。但我在 12 年级学习计算机，我的任务是制作一个生成数字的小程序，如果它等于另一组数字，你就赢了，有点像彩票。我发现很难让随机数生成器工作两次，所以我预加载了一个数字变量。现在我的最后一个任务是让它说 "you win" 如果其中一个数字匹配，如果不匹配 "you loose"，基本上我只是不能匹配变量？`

Random rn = new Random();

String answer = " 3\n 12 \n 27";
for(int i =0; i < 3; i++)
{
    int answer1 = rn.nextInt(30) + 1;

   delay(2000);
    System.out.println(answer1);

}
    System.out.println("And the winning numbers are...");

delay(2000);
    System.out.println(answer); }


    `

我走得更远了一点，但我的 'win' 似乎无法解析为变量，这是我的新代码`

 Random rn = new Random();

String answer = " 3\n 12 \n 27";
for(int i =0; i < 3; i++)
{
    int answer1 = rn.nextInt(30) + 1;


    System.out.println(answer1);


    System.out.println("And the winning numbers are...");


    System.out.println(answer); 

     if (answer1 == 3)
     if (answer1 == 12)
     if (answer1 == 27)
         win = true;

 if (win) {
System.out.println("You win!");
 } else
System.out.println("You loose");
}`

Answer 1

now my last task is to get it to say "you win" if one of the numbers match, and if not "you loose"

像这样：

public static void main(String[] args) throws InterruptedException {
        Random rn = new Random();
        int preloadedAnswer = 19;
        boolean win = false;
        for (int i = 0; i < 3; i++) {
            int answer1 = rn.nextInt(30) + 1;
            if (answer1 == preloadedAnswer)
                win = true;
        }
        if (win) {
            System.out.println("You win!");
        } else
            System.out.println("You loose");
    }

Answer 2

该代码的问题是您需要很长时间才能中奖。尝试为它做一些算法来增加获胜的可能性。

import java.io.*;
import java.util.Random;

public class Lottery{
    public static void main(String args[]) throws Exception{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        Random rn = new Random();

        int ch = 1;
        while(ch == 1){
            String str = "";
            String str1 = "";
            String str2 = "";

            for(int i = 0; i < 3; i++){
                int answer1 = rn.nextInt(9) + 1;

                //delay(2000);
                str = str + "-" + answer1;
                str1=str1+answer1;
            }

            System.out.println(str);
            str = "";

            for(int i =0; i < 3; i++){
                int answer1 = rn.nextInt(9) + 1;

                //delay(2000);
                str = str + "-" + answer1;
                str2 = str2 + answer1;
            }
            System.out.println(str);

            if(Integer.parseInt(str1) == Integer.parseInt(str2)){
                System.out.println("Crongrats !! You are the Lucky Winner !!!!");
            }   
            else
                System.out.println("Better Luck Next Time");

            System.out.println("Wanna Try Again ? 1=YES, 0=NO");
            ch = Integer.parseInt(br.readLine());
        }
        System.out.println("Thanks for Playing Lottery with us !! Come back soon");
    }
}

if else 语句有问题...重要

trouble with if else statement... important

java

if-statement