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Fix 12306 used list instead of string in rot13.py and removed n #12363

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Fix 12306 used list instead of string in rot13.py and removed n #12363

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1ff77c1
Fix:Used list instead of string in rot13.py and removed n
MadhavGupta1506 Nov 8, 2024
1f681f5
[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Nov 8, 2024
1a61d46
Used-list-instead-of-string-in-rot13.py-and-removed-n
MadhavGupta1506 Nov 9, 2024
d14c943
[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Nov 9, 2024
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11 changes: 6 additions & 5 deletions ciphers/rot13.py
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
def dencrypt(s: str, n: int = 13) -> str:
def dencrypt(s: str) -> str:
"""
https://en.wikipedia.org/wiki/ROT13

Expand All @@ -9,24 +9,25 @@ def dencrypt(s: str, n: int = 13) -> str:
>>> dencrypt(s) == msg
True
"""
out = ""
out: list[str] = []
n = 13
for c in s:
if "A" <= c <= "Z":
out += chr(ord("A") + (ord(c) - ord("A") + n) % 26)
elif "a" <= c <= "z":
out += chr(ord("a") + (ord(c) - ord("a") + n) % 26)
else:
out += c
return out
return "".join(out)


def main() -> None:
s0 = input("Enter message: ")

s1 = dencrypt(s0, 13)
s1 = dencrypt(s0)
print("Encryption:", s1)

s2 = dencrypt(s1, 13)
s2 = dencrypt(s1)
print("Decryption: ", s2)


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