向量点积计算

import java.util.Scanner;public class Main {public static void main(String[] args) {Scanner scanner = new Scanner(System.in);int n = scanner.nextInt();int[] a = new int[n];int[] b = new int[n];for (int i = 0; i < n; i++) {a[i] = scanner.nextInt();}for (int i = 0; i < n; i++) {b[i] = scanner.nextInt();}int dotProduct = 0;for (int i = 0; i < n; i++) {dotProduct += a[i] * b[i];}System.out.println(dotProduct);}
}