增强的循环没有正确地求和值

Question

我正在尝试将数组中的所有数字与 for loop 和 enhanced loop 相加。 for loop 工作正常，但 enhanced loop 返回 out of bounds error。

按照代码：

import java.util.*;

public class test
{     
  public static void main(String[]args)
  {
     //This code sums all of the values in an array with a for loop

     int count = 0;

     int[] array = {1,2,3,4,5,6,7,8,9,10};        

     for(int item = 0; item<array.length; item++)
        {
           count += array[item];
        }

      System.out.println(Arrays.toString(array) + "\nCount = " + count);
//////////////////////////////////////////////////////////////////////////////
      //This code is supposed to sum all of the digits in an array with a enhanced loop 
      int count2 = 0;

     int[] array2 = {1,2,3,4,5,6,7,8,9,10};        

     for(int item : array2)
        {
           count2 += array2[item];
        }

      System.out.println(Arrays.toString(array2) + "\nCount = " + count2);            
  }
}

Answer 1

增强的循环不计算索引 - 它提取项目本身。所以你只需要：

for(int item: array2){
  count2 += item;
}