Question

我一直在网上寻找并找到了一些能够完成这类代码的人，但没有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“亚利桑那州的首都是什么”。用户需要输入凤凰之类的资本，它将奖励一个点并移动到下一个问题，同时计算正确答案的数量并在完成时在输出的底部显示它们。在运行我的程序时，它会询问列表中第一个州的首都。一旦完成它将提供一个点，但然后吐出其他州说他们是正确的但不给使用机会进入下一个状态。就好像我错过了一个部分，当第一个状态得到回答时，它将回到原来的“输入所列州的首都”的问题。有人可以协助吗？我相信我需要一个声明，如if，else if和else但是看不出我将如何在这里应用它或者我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？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

你必须在for循环中移动问题和输入，你只需要输入一次，如果这是正确的，那么它将打印所有正确的，或者另一种方式。下面的两行应该在for循环中。

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

我认为有50个州（不是49个）？此外，如果您更改为50，则您的条件应为< NUMBER_OF_STATES而不是＆lt; =，否则您将拥有ArrayIndexOutOfBounds。

资本/状态猜测游戏2D阵列

1 个答案: