class Solution {
    public int solution(int[] a, int[] b) {
        int answer = 1234567890;
        return answer;
    }
}

해결법

방법 1

class Solution {
    public int solution(int[] a, int[] b) {
        int answer = 0;
        
        // a[0] * b[0] + a[1] * b[1] + ... + a[i] * b[i] = ?
        for (int i = 0; i < a.length; i++) {
            answer += a[i] * b[i];
        }
        
        return answer;
    }
}

내적 Lv. 1