strs은 단어가 담긴 배열입니다.
공통된 시작 단어(prefix)를 반환해주세요.
def get_prefix(strs):
string = ''
temp_string = ''
if len(strs) == 0:
return string
strs.sort(key=len)
strs_length = len(strs)
for i in range(1, strs_length):
for c in strs[0]:
if c in strs[i]:
temp_string += c
if string != temp_string:
string = temp_string
temp_string = ''
return string
strs = ['start', 'stair', 'step']
print(get_prefix(strs))
strs = ['flower', 'flue', 'fly']
print(get_prefix(strs))
strs = ['aa', 'aa', 'aa']
print(get_prefix(strs))