如何使用for循环从数组的每个第n个元素循环？ [英] How to loop from every nth element of an array using a for loop?

问题描述

这是我需要的输出：

 问题1 
答案1 
答案2 
答案3 
答案4 
问题2 
答案A 
答案B 
答案C 
答案D 
  

 问题1 
答案1 
答案2 
答案3 
答案4 
问题2 
答案1 
答案2 
答案3 
答案4 
  
 
 $ b 
这是我写的代码： 
 
 
  String [] question = new String [2]; 
的问题[0] =问题1; 
问题[2] =问题2; 
 
 String [] answer = new String [8]; 
 answer [0] =答案1; 
 answer [1] =答案2; 
 answer [2] =答案3; 
 answer [3] =答案4; 
 answer [4] =答案A; 
 answer [5] =答案B; 
 answer [6] =答案C; 
 answer [7] =答案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]）; 
 
 
 $ / code $ 
 
 
解决方案
可能只是改变你的代码逻辑一点点
  String [] question = new String [2]; 
的问题[0] =问题1; 
问题[2] =问题2; 
 
 String [] answer = new String [8]; 
 answer [0] =答案1; 
 answer [1] =答案2; 
 answer [2] =答案3; 
 answer [3] =答案4; 
 answer [4] =答案A; 
 answer [5] =答案B; 
 answer [6] =答案C; 
 answer [7] =答案D; 
 
 for（int i = 0; i< question.length; i ++）{
 
 System.out.println（question [i]）; （int j = i * 4; j <（i + 1）* 4; j ++）{
 
 
 System.out.println（answer [ J]）; 
  
 
I want to loop from every fourth element in the answer array, and my code is not working.


This is the output I need:
Question 1
Answer 1
Answer 2
Answer 3
Answer 4
Question2
Answer A
Answer B
Answer C
Answer D
This is the output I am getting:
Question 1
Answer 1
Answer 2
Answer 3
Answer 4
Question 2
Answer 1
Answer 2
Answer 3
Answer 4
This is the code I wrote:
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]);
    }
}

解决方案
you may just change your code logic a little bit 
 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]);


                        
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