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@dongwooklee96
Created July 22, 2021 12:06
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4.4.2
"""
문제 4.4.2 모든 문자열 치환
입력으로 주어진 문자열의 가능한 치환을 모두 출력해보는 문제이다.
예를 들어, 입력된 문자열이 'abc' 라면 결과는 ["abc", "acb", "bac", "cab", "cba"] 가 되어야 한다.
각 문자가 놓이는 모든 위치의 조합을 만들어라.
"""
from typing import List
def find_permutation(s: str) -> List[str]:
if len(s) == 1:
return list(s)
ans = []
curr = s[0]
s = s[1:]
words = find_permutation(s)
for sub in words:
for i in range(len(sub) + 1):
ans.append("".join([sub[:i], curr, sub[i:]]))
return ans
if __name__ == '__main__':
s = input()
res = find_permutation(s)
print(*res)
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