Caesar凯撒密码加解密

def solve(text, shift):
    result = []
    for c in text:
        if c.isalpha():
            base = ord('A') if c.isupper() else ord('a')
            result.append(chr((ord(c) - base + shift) % 26 + base))
        else:
            result.append(c)
    print(''.join(result))