백준 18258 (python): 큐2

from collections import deque
import sys

n = int(input())
queue = deque([])

for _ in range(n):
    cmd = list(sys.stdin.readline().rstrip().split())
    if len(cmd) == 2:
        if cmd[0] == 'push':
            queue.append(cmd[1])
    else:
        if queue:
            if cmd[0] == 'pop':
                print(queue.popleft())
            elif cmd[0] == 'size':
                print(len(queue))
            elif cmd[0] == 'empty':
                print(0)
            elif cmd[0] == 'front':
                print(queue[0])
            else:
                print(queue[-1])
        else:
            if cmd[0] == 'empty':
                print(1)
            elif cmd[0] == 'size':
                print(0)
            else:
                print(-1)

 

중복된 코드를 많이 줄였다!!!!!!!!!

 

 

from collections import deque
import sys

N = int(input())
q = deque()
for i in range(N):
    cmd = list(sys.stdin.readline().split())
    if cmd[0] == "push":
        q.append(cmd[1])
    elif cmd[0] == "pop":
        if len(q) == 0:
            print(-1)
        else:
            print(q.popleft())
    elif cmd[0] == "size":
        print(len(q))
    elif cmd[0] == "empty":
        if len(q) == 0:
            print(1)
        else:
            print(0)
    elif cmd[0] == "front":
        if len(q) == 0:
            print(-1)
        else:
            print(q[0])
    elif cmd[0] == "back":
        if len(q) == 0:
            print(-1)
        else:
            print(q[-1])