hill_cipher.py: Use int() to gracefully deal with float input (TheAlgorithms#12833)

cclauss · web-flow · commit 5c05335b27c7 · 2025-07-07T13:58:59.000+05:30
* TheAlgorithms#12821 (comment)
diff --git a/ciphers/hill_cipher.py b/ciphers/hill_cipher.py
@@ -78,8 +78,10 @@ def replace_digits(self, num: int) -> str:
         'T'
         >>> hill_cipher.replace_digits(26)
         '0'
+        >>> hill_cipher.replace_digits(26.1)
+        '0'
         """
-        return self.key_string[(num)]
+        return self.key_string[int(num)]
 
     def check_determinant(self) -> None:
         """
