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1.本题目要求得的两个向量的和，每一个向量通过一个一维数组表示，具体要求为：
1在Main类中.创建一个方法，方法功能为求两个一维数组之和得到求和数组并返回。方法声明为：
public static int[] add(int arr[],int []arr2)
2.在main方法中创建两个一维数组，一维数组的长度通过键盘得到，数组的元素通过键盘输入。
3.调用add方法得到两个一维数组之和，并输出这个一维数组的值。
输入格式:
第一行输入数组的元素个数
第二行输入第一个数组的各个元素 中间以空格隔开
第三行输入第二个数组的各个元素 中间以空格隔开
输出格式:
输出求和数组的各个元素，每行输出一个元素。
输入样例:
在这里给出一组输入。例如：
4 1 2 3 4 5 6 7 8
输出样例:
在这里给出相应的输出。例如：
6 8 10 12
参考答案：
import java.util.Scanner; public class Main { public static void main(String[]
args) { Scanner sc = new Scanner (System.in); int n = sc.nextInt(); int [] a1 =
new int[n]; int [] a2 = new int[n]; for(int i=0;i<n;i++) { a1[i] =
sc.nextInt(); } for(int i=0;i<n;i++) { a2[i] = sc.nextInt(); } for(int
i=0;i<n;i++) { int sum = a1[i]+a2[i]; System.out.println(sum); } sc.close(); } }
