주차 요금 계산

https://programmers.co.kr/learn/courses/30/lessons/92341

코딩테스트 연습 - 주차 요금 계산

function solution(fees, records) {
    const answer = [];
    const carsInfo = {};
    for (let record of records) {
        const [time, carNum, _] = record.split(" ");
        carsInfo[carNum] = carsInfo[carNum] || [];
        carsInfo[carNum].push(time);
    }
    const cars = Object.keys(carsInfo).sort((a, b) => a - b);
    // 기본 시간, 기본 요금, 단위 시간, 단위 요금
    const [dT, dF, uT, uF] = fees;
    
    const calcInOutTime = (inTime, outTime = "23:59") => {
        const start = inTime.split(":");
        const end = outTime.split(":");
        const startDate = new Date(0, 0, 0, start[0], start[1], 0);
        const endDate = new Date(0, 0, 0, end[0], end[1], 0);
        const diff = endDate - startDate;
        const minutes = Math.floor(diff / 1000 / 60);
        return minutes;
    }
    
    for (let car of cars) {
        let totalTime = 0;
        const n = carsInfo[car].length;
        for (let i = 0; i < n; i += 2) {
            totalTime += calcInOutTime(carsInfo[car][i], carsInfo[car][i + 1]);
        }
        let fee = dF;
        if (totalTime > dT) {
            fee += (Math.ceil((totalTime - dT) / uT) * uF);
        }
        answer.push(fee);
    }
    return answer;
}