Data commit

Task/Caesar-cipher/Nanoquery/caesar-cipher.nanoquery

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+def caesar_encode(plaintext, shift)
+	uppercase = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+	lowercase = "abcdefghijklmnopqrstuvwxyz"
+
+	cipher = ""
+	for char in plaintext
+		if char in uppercase
+			cipher += uppercase[uppercase[char] - (26 - shift)]
+		else if char in lowercase
+			cipher += lowercase[lowercase[char] - (26 - shift)]
+		else
+			cipher += char
+		end
+	end
+
+	return cipher
+end
+
+def caesar_decode(cipher, shift)
+	uppercase = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+	lowercase = "abcdefghijklmnopqrstuvwxyz"
+
+	plaintext = ""
+	for char in cipher
+		if char in uppercase
+			plaintext += uppercase[uppercase[char] - shift]
+		else if char in lowercase
+			plaintext += lowercase[lowercase[char] - shift]
+		else
+			plaintext += char
+		end
+	end
+
+	return plaintext
+end