[프로그래머스] Lv3. 입국심사 - Javascript

문제링크

문제풀이

function solution(n, times) {
    let answer = 0;
    
    let lt=0;
    let rt=1000000000*n;
    while(lt<=rt){
        let mid=parseInt((lt+rt)/2);
        let count=0;
        count=times.reduce((val,acc)=>val+parseInt(mid/acc),0);
        if (count>=n){
            answer=mid;
            rt=mid-1;
        }else{
            
            lt=mid+1;
        }
        
    }
    return answer;
}