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[+] A4 P4.1

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Hykilpikonna
2021-11-09 22:23:23 -05:00
parent d158b4ee3a
commit 2f609a6328
1 changed files with 4 additions and 0 deletions
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assignments/a4/a4_part4.py
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@@ -34,6 +34,8 @@ def grid_encrypt(k: int, plaintext: str) -> str:
>>> grid_encrypt(8, 'DAVID AND MARIO TEACH COMPUTER SCIENCE!!') >>> grid_encrypt(8, 'DAVID AND MARIO TEACH COMPUTER SCIENCE!!')
'DDTMCA EPIVMAUEIACTNDRHEC I REAOC !N OS!' 'DDTMCA EPIVMAUEIACTNDRHEC I REAOC !N OS!'
""" """
rows = len(plaintext) // k
return ''.join(plaintext[i % rows * k + i // rows] for i in range(len(plaintext)))
def grid_decrypt(k: int, ciphertext: str) -> str: def grid_decrypt(k: int, ciphertext: str) -> str:
@@ -47,6 +49,8 @@ def grid_decrypt(k: int, ciphertext: str) -> str:
>>> grid_decrypt(8, 'DDTMCA EPIVMAUEIACTNDRHEC I REAOC !N OS!') >>> grid_decrypt(8, 'DDTMCA EPIVMAUEIACTNDRHEC I REAOC !N OS!')
'DAVID AND MARIO TEACH COMPUTER SCIENCE!!' 'DAVID AND MARIO TEACH COMPUTER SCIENCE!!'
""" """
cols = len(ciphertext) // k
return ''.join(ciphertext[i % k * cols + i // k] for i in range(len(ciphertext)))
def plaintext_to_grid(k: int, plaintext: str) -> list[list[str]]: def plaintext_to_grid(k: int, plaintext: str) -> list[list[str]]: