Java遍历一维数组和二维数组

Question

我有一个 1d 数组的问题和一个 2d 的答案数组。我正在尝试打印出一个问题和该问题的多项选择答案并获取用户输入，然后返回并获取第二个问题并从二维数组中打印出多项选择答案。对不起，如果混淆。 代码：

private String[] questions =
{"Favourite Sweet", "Favourite subject at Hogwarts", "Dream Vacation"};

private String [][] selection =

{{"1.Acid Pops","2.Sherbert Lemons","3.Bertie Bott's Every Flavour Beans",
"4.Cake","5.Hagrid's Rock Cakes","6.Chocolate Frogs","7.Ginger Newt",
"8.I hate sweets\n"},

{"1.Care of Magical Creatures","2.Charms","3.Defense Against the Dark Arts", 
"4.Divination","5.Herbology","6.History of Magic","7.Muggle 
Studies","8.Potions", "9.Study of Ancient Runes","10.Transfiguration\n"},

{"1.Anywhere with friends","2.Egypt","3.Hogwarts","4.Museum","5.India","6.Forest",
"7.Can't be bothered with a vacation\n"}

};

我想打印“Favourite Sweet”，然后打印 1-8 个糖果，然后打印“Hogwarts 最喜欢的科目”，然后打印 1-10 个科目，然后是“Dream Vacation”，打印 1-7 个假期。

我的代码很垃圾，但在这里：

public void printQuestion(){


    for (rowQ = 0; rowQ <= questions.length; rowQ++){
        System.out.println(questions[rowQ]);
        for(int rowS = rowQ; rowS <= rowS; rowS++){
            for(int colS = rowS; colS <= selection[rowS].length; colS++){
            System.out.println(selection[rowS][colS]);

        }
    }
}

这就是我现在运行代码时发生的情况：

最喜欢的甜食

1.Acid Pops

2.Sherbert 柠檬

3.Bertie Bott's Every Flavor Beans

4.蛋糕

5.海格的摇滚蛋糕

6.巧克力蛙

7.姜蝾螈

8.我讨厌甜食

线程“主”java.lang.ArrayIndexOutOfBoundsException 中的异常：8

Answer 1

既然你说你的代码不好，我有幸完全重写它，它对我有用：

for (int i = 0 ; i < questions.length ; i++){
    System.out.println(questions[i]);
    for(int j = 0 ; j  < selection[i].length ; j++){
        System.out.println(selection[i][j]);
    }
}

这背后的想法是为每个问题打印出选择数组中与问题数组具有相同索引的所有答案，直到该数组的末尾