java - Java 二维数组程序中的无限循环

Question

一旦回答了最后一个问题，程序就会结束并给出正确答案的数量。相反，程序会返回到循环中的初始问题。“阿拉巴马州的首府是哪里”

package exercise09_17;
import java.util.Scanner;

public class exercise09_17 {

    static Scanner input = new Scanner(System.in).useDelimiter("\r\n"); 
    public static void main(String[] args) {
        int correctAnswer = 0;
        String [][] grid = {
                {"Alabama", "California", "Delaware", "Florida", "Georgia",
                "Hawaii", "Idaho", "Kansas", "Lousiana", "Maryland", "New Mexico", "Oregon",
                "Pennsylvania", "Rhode Island", "South Carolina", "Texas", "Utah", "Virgina",
                "West Virginia"},
                {"Montgomery", "Sacramento", "Dover", "Tallahassee", "Atlanta",
                "Honolulu", "Boise", "Topeka", "Baton Rouge", "Annapolis", "San Jose", "Salem",
                "Harrisburg", "Providence", "Columbia", "Austin", "Salt Lake City", "Richmond",
                "Charleston"}};

        for(int i = 0; i< grid.length; i++){

            for(int k = 0; k < grid[i].length; k++ ){
                System.out.println("What is the capital of " + grid[0][k] + "?");
                String capital = input.next();
                String answer = grid[1][k];


                if(capital.equalsIgnoreCase(answer)){
                correctAnswer ++;   
                System.out.println("Your answer is correct");
                }
                else
                    System.out.println("The correct answer should be " + answer);
            }

        }
        System.out.println("The correct count is " + correctAnswer);
    }
}

Answer 1

它不是无限的。它只进行了两次:

for(int i = 0; i< grid.length; i++){

这里不需要这个 i 变量，因此也不需要整个外循环，因为您使用了子数组 grid[0] 和 grid[1] 第一次遍历时