oj塞氪算法练习

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);
    }
}