题解 | #字符串加密#
字符串加密
https://www.nowcoder.com/practice/e4af1fe682b54459b2a211df91a91cf3
import sys
def pdic(pkey):
st1 = list(set(pkey)) #对传入的密钥pkey去重
letters = [chr(x) for x in range(97,123,1)] ##小写字母表
st2 = set(letters) - set(st1) #集合取差集，为剩余字符集
lst = sorted(list(st1),key=pkey.index) + sorted(list(st2))
#此处重要！st1是密钥列表，要按照传入pkey的字符顺序排序。st2按照正常排序即可
dic = {}
for i in range(26): #构建对应密码表
dic[list(letters)[i]] = lst[i]
return dic
pkey = input()
dic = pdic(pkey)
st = input()
res = [dic.get(x) for x in list(st)] #逐字符加密
print(*(res),sep='')
