[프로그래머스] 내적 java

🔔 내적

https://school.programmers.co.kr/learn/courses/30/lessons/70128

🔑 java 풀이

import java.util.*;
class Solution {
    public int solution(int[] a, int[] b) {
        int sum=0;
        for(int i=0; i<a.length; i++){
            sum+=a[i]*b[i];
        }
        return sum;
    }
}