Skip to content

Add a rot13 cipher in response to Issue #7 #13

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Oct 24, 2019
Merged

Add a rot13 cipher in response to Issue #7 #13

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
21 changes: 21 additions & 0 deletions Ciphers/rot13.py
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,21 @@
#rot13
OFFSET_LOWER = ord('a')
OFFSET_UPPER = ord('A')

def rot13(text):
rot13_text = ''
for i in range(len(text)):
ch = text[i]
if ch.isalpha():
if(ch.islower()):
offset = OFFSET_LOWER
else:
offset = OFFSET_UPPER
rot13_text += chr(((ord(ch)-offset+13)%26+offset))
else:
rot13_text += ch
return rot13_text

plain_text = input("Enter the string: ")
print(rot13(plain_text))
print(rot13(rot13(plain_text)))