Capital/State 猜谜游戏二维数组

Question

我一直在网上查找并找到一些能够完成此类代码的人，但没有人为我直接看到的问题提供解决方案。这里的任务是让程序询问用户"What is the capital of Arizona"。用户需要输入诸如 Phoenix 之类的大写字母，它会奖励一个点并一直移动到下一个问题，同时计算正确答案的数量并在完成后将其显示在输出的底部。当运行我的程序询问列表中第一个州的首都时。一旦完成，它将提供一个点，但随后吐出其余状态，说它们是正确的，但不给用户进入下一个状态的机会。就好像我错过了当第一个状态被回答时会回到 "Enter the capital of the state listed" 的原始问题的部分。有人可以提供帮助吗？我相信我需要一个类似 if、else if 和 else 的语句，但看不出我将如何在此处应用它，或者我是否应该尝试另一个循环。我无法让 do 循环正常工作。有什么建议么？我的代码如下。

import java.util.Scanner;


public class StatesArray {
static Scanner scnr = new Scanner(System.in);
   public static void main(String[] args) {

       int correctStates = 0;
       String userInput = "";
       int i = 0;
       final int NUMBER_OF_US_STATES = 49;

       String capitals [][] = {
        {"Alabama", "Montgomery"},
        {"Alaska", "Juneau"},
        {"Arizona", "Phoenix"},
        {"Arkansas", "Little Rock"},
        {"California", "Sacramento"},
        {"Colorado", "Denver"},
        {"Connecticut", "Hartford"},
        {"Delaware", "Dover"},
        {"Florida", "Tallahasse"},
        {"Georgia", "Atlanta"},
        {"Hawaii", "Honolulu"},
        {"Idaho", "Boise"},
        {"Illinois", "Springfield"},
        {"Indiana", "Indianapolis"},
        {"Iowa", "Des Moines"},
        {"Kansas", "Topeka"},
        {"Kentucky", "Frankfort"},
        {"Louisiana", "Baton Rouge"},
        {"Maine", "Augusta"},
        {"Maryland", "Annapolis"},
        {"Massachusettes", "Boston"},
        {"Michigan", "Lansing"},
        {"Minnesota", "Saint Paul"},
        {"Mississippi", "Jackson"},
        {"Missouri", "Jefferson City"},
        {"Montana", "Helena"},
        {"Nebraska", "Lincoln"},
        {"Nevada", "Carson City"},
        {"New Hampshire", "Concord"},
        {"New Jersey", "Trenton"},
        {"New York", "Albany"},
        {"New Mexico", "Santa Fe"},
        {"North Carolina", "Raleigh"},
        {"North Dakota", "Bismark"},
        {"Ohio", "Columbus"},
        {"Oklahoma", "Oklahoma City"},
        {"Oregon", "Salem"},
        {"Pennslyvania", "Harrisburg"},
        {"Rhode Island", "Providence"},
        {"South Carolina", "Columbia"},
        {"South Dakota", "Pierre"},
        {"Tennessee", "Nashville"},
        {"Texas", "Austin"},
        {"Utah", "Salt Lake City"},
        {"Vermont", "Montpelier"},
        {"Virginia", "Richmond"},
        {"Washington", "Olympia"},
        {"West Virginia", "Charleston"},
        {"Wisconsin", "Madison"},
        {"Wyoming", "Cheyenne"}
       };

       System.out.println("Enter the Capital of the State listed: " + capitals[i][0]);
       userInput = scnr.next();

       i = 0;
       for(i = 0; i <= NUMBER_OF_US_STATES; i++){      
       if(capitals[i][1].equals(userInput)) {
           correctStates++;
           System.out.println("Yes that is the capital of " + capitals[i][0] + ".");

       }

       else {
           System.out.println("No that is not the capital of " + capitals[i][0] + ".");
           i++;
       }
       }


       //counts the number of correct guesses.
       System.out.println("Total number of capitals answered correctly: " + correctStates + ".");
       i++;


     return;

   }
}

Answer 1

您必须将问题和输入移动到 for 循环内，您只要求输入一次，如果正确则打印所有正确，否则以其他方式打印。下面两行应该在 for 循环内。

System.out.println("Enter the Capital of the State listed: " + capitals[i][0]);
userInput = scnr.next();

而且我认为有 50 个州（不是 49 个）？此外，如果您更改为 50，您的条件应该是 < NUMBER_OF_STATES 而不是 <=，否则您将有一个 ArrayIndexOutOfBounds。

Capital/State 猜谜游戏二维数组

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