[Programmers] Lv 2. 할인 행사

https://school.programmers.co.kr/learn/courses/30/lessons/131127

프로그래머스

 

const solution = (want, number, discount) => {
    return discount.reduce(
        (acc, el) => {
            if (acc.queue.length >= 10) var shifted = acc.queue.shift();
            acc.queue.push(el);

            if (want.some((e) => e === shifted)) ++number[want.indexOf(shifted)];
            if (want.some((e) => e === el)) --number[want.indexOf(el)];

            acc.res += number.every((e) => e <= 0) ? 1 : 0;

            return acc;
        },
        { queue: [], res: 0 }
    ).res;
};

GitHub : https://github.com/developeSHG/Algorithm-Baekjoon_Programmers/tree/main/%ED%94%84%EB%A1%9C%EA%B7%B8%EB%9E%98%EB%A8%B8%EC%8A%A4/lv2/131127.%E2%80%85%ED%95%A0%EC%9D%B8%E2%80%85%ED%96%89%EC%82%AC

GitHub - developeSHG/Algorithm-Baekjoon_Programmers: 백준 and 프로그래머스 소스코드