hi jaeneee
python - deque 본문
deque : 양방향 큐
deque에 데이터 추가
-> deq.append(데이터) : 오른쪽 끝에 데이터 삽입
-> deq.appendleft(데이터) : 왼쪽 끝에 데이터 삽입
from collections import deque
deq = deque()
deq.append(1)
print(deq) #deque([1])
deq.append(2)
print(deq) #deque([1, 2])
deq.appendleft(3)
print(deq) #deque([3, 1, 2])
deq.appendleft(4)
print(deq) #deque([4, 3, 1, 2])
deque의 데이터 삭제
-> deque.pop() : 오른쪽 끝 데이터 삭제 및 반환
-> deque.popleft() : 왼쪽 끝 데이터 삭제 및 반환
from collections import deque
deq = deque()
deq.append(1)
print(deq)
deq.append(2)
print(deq)
deq.appendleft(3)
print(deq)
deq.appendleft(4)
print(deq)
deq.pop()
print(deq) #deque([4, 3, 1])
deq.popleft()
print(deq) #deque([3, 1])
모든 원소 지우기
-> deq.clear()
from collections import deque
deq = deque()
deq.append(1)
print(deq)
deq.append(2)
print(deq)
deq.appendleft(3)
print(deq)
deq.appendleft(4)
print(deq)
deq.pop()
print(deq)
deq.popleft()
print(deq)
deq.clear()
print(deq) #deque([])
deq 사이즈
->len(deq)
from collections import deque
deq = deque()
deq.append(1)
print(deq)
deq.append(2)
print(deq)
deq.appendleft(3)
print(deq)
deq.appendleft(4)
print(deq)
deq.pop()
print(deq)
deq.popleft()
print(deq)
print(len(deq)) #2
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