题解 | 字符串加解密#暴力历遍

def jiemi(x:str):
    alpha='abcdefghijklmnopqrstuvwxyz'
    dic_alpha={}
    for i in range(len(alpha)):
        dic_alpha[alpha[i]]=i
    if x.islower() and x!='z':
        return alpha[dic_alpha[x]+1].upper()
    if x.isupper() and x!='Z':
        return alpha[dic_alpha[x.lower()]+1].lower()
    if x=='Z':
        return 'a'
    if x=='z':
        return 'A'
    if x.isdigit():
        if int(x)+1>9:
            return '0'
        else:
            return str(int(x)+1)
def jiami(x):
    alpha='abcdefghijklmnopqrstuvwxyz'
    dic_alpha={}
    for i in range(len(alpha)):
        dic_alpha[alpha[i]]=i
    if x.islower() and x!='a':
        return alpha[dic_alpha[x]-1].upper()
    if x.isupper() and x!='A':
        return alpha[dic_alpha[x.lower()]-1].lower()
    if x=='A':
        return 'z'
    if x=='a':
        return 'Z'
    if x.isdigit():
        if int(x)-1<0:
            return '9'
        else:
            return str(int(x)-1)
s=input()
ans_s=[]
ans_t=[]
t=input()
for i in s:
    ans_s.append(jiemi(i))
for i in t:
    ans_t.append(jiami(i))
print(''.join(ans_s))
print(''.join(ans_t))

没有技巧，全是硬解