Question

我想从答案数组中的每个第四个元素循环，我的代码无效。

这是我需要的输出：

Question 1
Answer 1
Answer 2
Answer 3
Answer 4
Question2
Answer A
Answer B
Answer C
Answer D

这是我得到的输出：

Question 1
Answer 1
Answer 2
Answer 3
Answer 4
Question 2
Answer 1
Answer 2
Answer 3
Answer 4

这是我写的代码：

String[]question = new String[2];
question[0] = "Question 1"; 
question[2] = "Question 2";      

String[]answer = new String[8];
answer[0] = "Answer 1";
answer[1] = "Answer 2";
answer[2] = "Answer 3";
answer[3] = "Answer 4";
answer[4] = "Answer A";
answer[5] = "Answer B";
answer[6] = "Answer C";
answer[7] = "Answer D";

for (int i = 0; i < question.length; i++) {
    System.out.println(question[i]);
    for (int j = 0; j<4; j++) {
        System.out.println(answer[j]);
    }
}

Answer 1

你可能只是稍微改变你的代码逻辑

 String[]question = new String[2];
question[0] = "Question 1"; 
question[2] = "Question 2";      

String[]answer = new String[8];
answer[0] = "Answer 1";
answer[1] = "Answer 2";
answer[2] = "Answer 3";
answer[3] = "Answer 4";
answer[4] = "Answer A";
answer[5] = "Answer B";
answer[6] = "Answer C";
answer[7] = "Answer D";

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

    System.out.println(question[i]);

    for (int j = i*4; j<(i+1)*4; j++) {


            System.out.println(answer[j]);

Answer 2

用这个

替换第二个循环定义

for (int j = i*4; j<(i*4+4); j++) {

另外，用这个

替换第三行

question[1] = "Question 2";

我认为这是您发布的示例代码中的拼写错误。

如何使用for循环从数组的每个第n个元素循环？

2 个答案: