编码解码器
字符串加解密
http://www.nowcoder.com/questionTerminal/2aa32b378a024755a3f251e75cbf233a
def encode(string): string = list(string) for i in range(len(string)): if string[i].isalpha(): if string[i].islower(): if string[i] != 'z': string[i] = chr(ord(string[i].upper()) + 1) else: string[i] = 'A' else: if string[i] != 'Z': string[i] = chr(ord(string[i].lower()) + 1) else: string[i] = 'a' else: if string[i] != '9': string[i] = str(int(string[i]) + 1) else: string[i] = '0' return ''.join(string) def decode(string): string = list(string) for i in range(len(string)): if string[i].isalpha(): if string[i].islower(): if string[i] != 'a': string[i] = chr(ord(string[i].upper()) - 1) else: string[i] = 'Z' else: if string[i] != 'A': string[i] = chr(ord(string[i].lower()) - 1) else: string[i] = 'z' else: if string[i] != '0': string[i] = str(int(string[i]) - 1) else: string[i] = '9' return ''.join(string) while True: try: encode_str = input() decode_str = input() print(encode(encode_str)) print(decode(decode_str)) except: break
