[파이썬🐍] 프로그래머스 : 택배상자

from collections import deque

def solution(order):
    order=deque(order)
    answer = 0
    container=[]
    for i in range(1,len(order)+1):
        container.append(i)
        while container and order[0] == container[-1]:
            answer+=1
            container.pop()
            order.popleft()
    return answer