[프로그래머스]실패율 (javascript,자바스크립트)

문제

풀이 1

function solution(N, stages) {
    let failResult = []
    for (let n=1; n<=N;n++){
        let completePeople =0
        let failPeople = 0
        for (let i=0; i<stages.length; i++){
            if (n < stages[i]) completePeople++
            else if(n === stages[i]) failPeople++
        }
        failResult.push([n ,failPeople / (completePeople + failPeople)])
    }    
   return failResult.sort((a,b) => b[1]-a[1]).map(v => v[0]) 
}

풀이 2

function solution(N, stages) {
    let result = [];
    for(let i=1; i<=N; i++){
        let reach = stages.filter((x) => x >= i).length;
        let curr = stages.filter((x) => x === i).length;
        result.push([i, curr/reach]);
    }
    result.sort((a,b) => b[1] - a[1]);
    return result.map((x) => x[0]);
}