[JavaScript] 프로그래머스 - 기능개발

문제출처: https://school.programmers.co.kr/learn/courses/30/lessons/42586

프로그래머스

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문제풀이

function solution(progresses, speeds) {
    let answer = [0];
    let days = progresses.map((progress, index) => Math.ceil((100 - progress) / speeds[index])) 
    let maxDay = days[0];

    for(let i=0, j=0; i < days.length; i++){
        if(days[i] <= maxDay){
            answer[j] += 1
        }else{
            maxDay = days[i];
            answer[++j] = 1;
        }
    }
    return answer;
}