[프로그래머스] 다리를 지나는 트럭 - JavaScript

📌 문제

https://programmers.co.kr/learn/courses/30/lessons/42583

📌 풀이

function solution(bridge_length, weight, truck_weights) {
    let queue = new Array(bridge_length).fill(0); //queue의 길이
    let moving_truck = truck_weights.shift(); //현재 다리를 건너고 있는 트럭
    let total_weight = 0; //현재 다리를 건너는 트럭의 총 무게
    let time = 0; //걸린 시간

    queue.unshift(moving_truck);
    queue.pop();
    total_weight += moving_truck;    
    time++;
    
    while(total_weight) {
        total_weight -= queue.pop();
        moving_truck = truck_weights.shift();
        
        if(moving_truck <= weight - total_weight) {
            queue.unshift(moving_truck);
            total_weight += moving_truck;
        } else {
            queue.unshift(0);
            truck_weights.unshift(moving_truck);
        }
        time++;
    }
    return time;
}