元素的總和到第三個數組

Question

我希望代碼獲取兩個數組的相應元素的總和。 我試圖添加元素。 但是，我對如何做到這一點感到非常困惑。 我試圖獲得此輸出以匹配測試。 用戶將輸入數組的長度以及數組（arrayA）和（arrayB）的每個元素。 最后，我希望我的代碼將這兩個數組的元素添加到數組C中。因此輸出應如下所示：

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

到目前為止，我已經編寫了代碼，但是它僅計算數組長度是否為4。請告訴我如何使程序計算任意長度的兩個數組的相應元素之和。

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

替換這段代碼：

 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];
 }

最后幾行：

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));