COS PRO 1급 팝업 스토어를 열 최적의 날짜

 

 

[소스 코드]

class Main {
    public int solution(int[] revenue, int k) {
        int answer = 0;
        int n = revenue.length;
        int sum = 0;
        for (int i = 0; i < k; i++) {
            sum += revenue[i];
        }
        answer = sum;
        for (int i = k; i < n; i++) {
            sum = sum - revenue[i - k] + revenue[i];
            if (answer < sum)
                answer = sum;
        }
        return answer;
    }
}