Question

我正在制作一个简单的猜测程序。猜数字1-20，如果你弄错了，它不能再打印那个数字。但它仍在这样做，我需要帮助弄清楚如何记住它。

请不要责怪我，我是编程新手。 =）

以下是代码朋友：

import java.util.Scanner;

public class TG_UN5EX5 {

    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);

        int characternumber = 0;

        int characterrandom = (int) (Math.random() * (100 + 1 - 1) + 1);

        int[] list = new int[20];

        int e = 0;

        int random = (int) (Math.random() * (20 - 1 + 1) + 1);

        int guesstimes = 5;

        int guess = 0;

        int guessed = 0;

        while (guess != random && guesstimes > 0) {
            for (int b = 0; b < list.length; b++) {
                e++;
                list[b] = e;

                if (guess == e)
                    list[e] = -1;
                if (e >= 20)
                    e = 0;

                if (list[e] != -1)
                    System.out.print("[" + list[b] + "] ");
            }

            System.out.print("What is the number?");
            guess = scan.nextInt();

            if (guess > random)
                System.out.println("Too High!");

            else if (guess < random)
                System.out.println("Too Low!");

            else
                System.out.println("You got it!");

            guesstimes--;
        }

        if (guess != random)
            System.out.println("Game over! \n You ran out of tries!");

        else
            System.out.println("You won!");

    }
}

Answer 1

尝试用Set替换你的数组。它们将帮助您使用.contains（）等方法跟踪以前的猜测。在设置Set的类型时，请使用Integer对象而不是int原语。

final Set<Integer> guesses = new HashSet<>();

Answer 2

您可以在声明变量列表之后初始化它：

for (int b = 0; b < list.length; b++) {
 if (guess == list[b]) 
    list[b] = -1; 
if (list[b] != -1) 
    System.out.print("[" + list[b] + "] "); }

然后将for循环重写为：

Neo4j::ActiveBase.current_session.query(cypher_query_string)

做一个猜测程序，需要它记住我是否猜到了这个数字

2 个答案: