https://programmers.co.kr/learn/courses/30/lessons/12912
def solution(a, b):
answer = 0
if a < b:
for i in range(a, b + 1):
answer += i
else:
for i in range(b, a + 1):
answer += i
return answer
for문 돌려서 합 구하지 말고 sum() 메서드 사용하기
def solution(a, b):
answer = 0
if a < b:
answer = sum(range(a, b + 1))
else:
answer = sum(range(b, a + 1))
return answer