题解 | #字符串加解密#

while True:
    try:
        res1 = []
        res2 = []
        lst1 = list(input())
        lst2 = list(input())
        def encode(lst):
            for i in lst:
                if i.isdigit():
                    res1.append(str((int(i)+1)%10))
                if i.isalpha():
                    if i.islower():
                        char = chr(ord(i)+1) if ord(i)+1<123 else "a"
                        res1.append(char.upper())
                    else:
                        char = chr(ord(i)+1) if ord(i)+1<91 else "A"
                        res1.append(char.lower())
            return "".join(res1)
        def decode(lst):
            for i in lst:
                if i.isdigit():
                    res2.append(str((int(i)-1)%10))
                if i.isalpha():
                    if i.islower():
                        char = chr(ord(i)-1) if ord(i)-1>96 else "z"
                        res2.append(char.upper())
                    else:
                        char = chr(ord(i)-1) if ord(i)-1>64 else "Z"
                        res2.append(char.lower())
            return "".join(res2)
        print(encode(lst1))
        print(decode(lst2))
    except:
        break