문자열 재정렬 [구현]

s=input()
alphabet=''
alpha_list=[]
num_sum=0
answer=''

for i in s:
    if i.isalpha():
        alphabet+=i
    else:
        num_sum+=int(i)
for i in alphabet:
    alpha_list.append(i)

alpha_list.sort()

for i in alpha_list:
    answer+=i

if num_sum==0:
    print(answer)
else:
    print(answer+str(num_sum))

• 숫자가 없는 예외 케이스 처리 못했음.

join()

s = input()

alpha_list = []
num = 0

for i in s:
    if i.isalpha():
        alpha_list += i
    else:
        num += int(i)

alpha_list.sort()
alpha = "".join(alpha_list)
if num==0:
    print(alpha)
else:
    print(alpha + str(num))

• 모든 문자열 합치기 위해 join() 사용 : for문 보다 훨씬 simple

alpha = "".join(alpha_list)