元素的总和到第三个数组

Question

我希望代码获取两个数组的相应元素的总和。 我试图添加元素。 但是，我对如何做到这一点感到非常困惑。 我试图获得此输出以匹配测试。 用户将输入数组的长度以及数组（arrayA）和（arrayB）的每个元素。 最后，我希望我的代码将这两个数组的元素添加到数组C中。因此输出应如下所示：

Input the length: 5
Enter a value for first array, position 0: 1
Enter a value for first array, position 1: 6
Enter a value for first array, position 2: 13
Enter a value for first array, position 3: -3
Enter a value for first array, position 4: 8
Enter a value for second array, position 0: 9
Enter a value for second array, position 1: -4
Enter a value for second array, position 2: 1
Enter a value for second array, position 3: 65
Enter a value for second array, position 4: 18
first: 1 6 13 -3 8
second: 9 -4 1 65 18
result: 10 2 14 62 26

到目前为止，我已经编写了代码，但是它仅计算数组长度是否为4。请告诉我如何使程序计算任意长度的两个数组的相应元素之和。

import java.util.*;

class ArrayArithmetic
{
   public static void main ( String[] args )
   {
      Scanner in = new Scanner(System.in);
      System.out.print("Input the length: ");
      int len = in.nextInt();

      int[] arrA   = new int[len];
      int[] arrB   = new int[len];
      int[] sum    = new int[len];
      for (int i = 0; i < len; i++){
        System.out.print("Enter a value for first array, position " + i + ": ");
        arrA[i] = in.nextInt();
    }
    for (int i = 0; i < len; i++){
        System.out.print("Enter a value for second array, position " + i + ": ");
        arrB[i] = in.nextInt();
    }

    for(int i = 0; i < arrA.length; i++)
    {
     for(int j = 0; i < arrB.length; i++)
     {
       sum[i] = arrA[i] + arrB[i];

   }

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

}

    System.out.println("first: "+Arrays.toString(arrA));          
    System.out.println("second:"+Arrays.toString(arrB));       
    System.out.println("result: " + sum[0]+"," + sum[1] + ","  + sum[2] + ","  + sum[3] );


    } 
}

Answer 1

替换这段代码：

 for(int i = 0; i < arrA.length; i++)
{
 for(int j = 0; i < arrB.length; i++)
 {
   sum[i] = arrA[i] + arrB[i];
 }

同

 for(int i = 0; i < len; i++)
{
   sum[i] = arrA[i] + arrB[i];
 }

最后几行：

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

}

System.out.println("first: "+Arrays.toString(arrA));          
System.out.println("second:"+Arrays.toString(arrB));       
System.out.println("result: " + sum[0]+"," + sum[1] + ","  + sum[2] + ","  + sum[3] );

同

System.out.println("first: "+Arrays.toString(arrA));          
System.out.println("second:"+Arrays.toString(arrB));       
System.out.println("result: " + Arrays.toString(sum));