[파이썬] 문제 : 중첩 for문으로 숫자 삼각형 그리기

n = 5

for i in range(1, n+1):
    for j in range(i):
        print(str(j+1), end=' ')
    print()
for i in range(2, n+1):
    for j in range(n+1-i):
        print(str(j+1), end=' ')
    print()