The goal of this program is to encode an incoming message using a special binary encoding method. In this method, the input message, consisting of ASCII characters, is transformed into blocks of 0s separated by spaces. The first block is either 0 or 00, where 0 represents a series of 1s and the absence of 0 represents a series of 0s. The second block contains the number of 0s corresponding to the number of bits in the series. For example, the character 'C' is encoded as "0 0 00 0000 0 00," where 'C' in binary is 1000011. The program should handle input messages with up to 100 ASCII characters and output the encoded message accordingly.
The provided code consists of two functions: to_binary and to_unary. These functions are used to convert text between binary and unary representations.
The to_binary function takes a string of text as input and converts each character into its corresponding binary representation. It iterates over each character in the input text, retrieves its ASCII value using the ord() function, and formats the ASCII value as a binary string with a width of 7 digits using the format() method. The binary representations of all characters are then concatenated to form a binary string, which is returned as the output.
The to_unary function takes a binary string as input and converts it into a unary representation. It initializes an empty string for the unary representation and a boolean variable prev_digit to keep track of the previous digit encountered. The function handles the first character separately by checking if it is "0" or "1" and adding the corresponding unary representation to the output string. It also updates the prev_digit variable accordingly.
For the subsequent characters, the function iterates over the input string starting from the second character. If the current digit is "0" and the previous digit was "1", it adds the unary representation for switching from "1" to "0" to the output string and updates the prev_digit variable to False. If the current digit is "1" and the previous digit was "0", it adds the unary representation for switching from "0" to "1" to the output string and updates the prev_digit variable to True. If the current digit is the same as the previous digit, it adds the unary representation for repeating the digit to the output string.
Finally, the function returns the unary representation of the input binary string.
The main part of the code prompts the user to enter a text string, which is then passed through the to_binary function to obtain the binary representation. The binary representation is then passed to the to_unary function to get the unary representation. Finally, the unary representation is printed as output.
This code provides two functions, to_binary and to_unary, that allow for the conversion of text between binary and unary representations.
This function takes a text string as input and converts it into a binary representation.
text(str): The input text to be converted.
binary_text(str): The binary representation of the input text.
text = "A"
binary_text = to_binary(text)
print(binary_text)Output:
1000001
This function takes a text string in binary format as input and converts it into a unary representation.
text(str): The binary representation of the input text.
unary_text(str): The unary representation of the input text.
text = "1000011"
unary_text = to_unary(text)
print(unary_text)Output:
0 0 00 0000 0 00