英文加解密器

yj311

def is_even(number):
    return number % 2 == 0

def get_even_letters(message):
    even_letters = []
    for counter in range(0, len(message)):
        if is_even(counter):
            even_letters.append(message[counter])
    return even_letters

def get_odd_letters(message):
    odd_letters = []
    for counter in range(0, len(message)):
        if not is_even(counter):
            odd_letters.append(message[counter])
    return odd_letters

def swap_letters(message):
    letter_list = []
    if not is_even(len(message)):
        message = message + 'x'
    even_letters = get_even_letters(message)
    odd_letters = get_odd_letters(message)
    for counter in range(0, int(len(message) / 2)):
        letter_list.append(odd_letters[counter])
        letter_list.append(even_letters[counter])
    new_message = ''.join(letter_list)
    return new_message

def get_task():
    task = input('Do you want to encrypt or decrypt?\n')
    return task

def get_message():
    message = input('Enter the secret message:\n')
    return message

#主循环
while True:
    task = get_task()
    if (task == 'encrypt'):
        message = get_message()
        encrypted = swap_letters(message)
        print('Ciphertext of the secret message is: ' + encrypted)
    elif (task == 'decrypt') :
        message = get_message()
        decrypted = swap_letters(message)
        print('Plaintext of the secret message is: ' + decrypted)
    else :
        break

yj311

1. def is_even(number):
   
2.     return number % 2 == 0
   
3. 
   
4. def get_even_letters(message):
   
5.     even_letters = []
   
6.     for counter in range(0, len(message)):
   
7.         if is_even(counter):
   
8.             even_letters.append(message[counter])
   
9.     return even_letters
   
10. 
    
11. def get_odd_letters(message):
    
12.     odd_letters = []
    
13.     for counter in range(0, len(message)):
    
14.         if not is_even(counter):
    
15.             odd_letters.append(message[counter])
    
16.     return odd_letters
    
17. 
    
18. def swap_letters(message):
    
19.     letter_list = []
    
20.     if not is_even(len(message)):
    
21.         message = message + 'x'
    
22.     even_letters = get_even_letters(message)
    
23.     odd_letters = get_odd_letters(message)
    
24.     for counter in range(0, int(len(message) / 2)):
    
25.         letter_list.append(odd_letters[counter])
    
26.         letter_list.append(even_letters[counter])
    
27.     new_message = ''.join(letter_list)
    
28.     return new_message
    
29. 
    
30. def get_task():
    
31.     task = input('Do you want to encrypt or decrypt?\n')
    
32.     return task
    
33. 
    
34. def get_message():
    
35.     message = input('Enter the secret message:\n')
    
36.     return message
    
37. 
    
38. #主循环
    
39. while True:
    
40.     task = get_task()
    
41.     if (task == 'encrypt'):
    
42.         message = get_message()
    
43.         encrypted = swap_letters(message)
    
44.         print('Ciphertext of the secret message is: ' + encrypted)
    
45.     elif (task == 'decrypt') :
    
46.         message = get_message()
    
47.         decrypted = swap_letters(message)
    
48.         print('Plaintext of the secret message is: ' + decrypted)
    
49.     else :
    
50.         break

复制代码