题解 | 字符串加解密

s = input()
t = input()

def encrypt(s):
    code = []
    for c in s:
        if c.isupper():
            code.append(chr((ord(c) - ord('A') + 1) % 26 + ord('a')))
        elif c.islower():
            code.append(chr((ord(c) - ord('a') + 1) % 26 + ord('A')))
        else:
            code.append(chr((ord(c) - ord('0') + 1) % 10 + ord('0')))
    return code

def decrypt(s):
    code = []
    for c in s:
        if c.isupper():
            code.append(chr((ord(c) - ord('A') - 1) % 26 + ord('a')))
        elif c.islower():
            code.append(chr((ord(c) - ord('a') - 1) % 26 + ord('A')))
        else:
            code.append(chr((ord(c) - ord('0') - 1) % 10 + ord('0')))
    return code

print("".join(encrypt(s)))
print("".join(decrypt(t)))