[백준/1316/파이썬(Python3)] 그룹 단어 체커

문제출처

1316번: 그룹 단어 체커

 

풀이코드

N=int(input())
answer=0
for i in range(N):
    word=input()
    compare=''
    word_copy=''
    for ch in word:
        if ch != compare and ch not in word_copy:
            compare=ch
            word_copy+=ch
        elif ch==compare:
            compare=ch
            word_copy+=ch
    if word==word_copy:
        answer+=1
print (answer)