1. collections 함수 이용 : list의 뺄셈이 가능!
import collections
def solution(numbers):
ans = 0
num = list(range(10))
ans = collections.Counter(num) - collections.Counter(numbers)
return sum(ans)
2. lambda 함수 이용
solution = lambda x : sum(range(10)) - sum(x)
3. sum 이용
def solution(numbers):
answer = 45 - sum(numbers)
return answer