Something else interesting from a few years ago: a compression algorithm that's bijective. http://www3.sympatico.ca/mt0000/bicom/bicom.html http://www3.sympatic

Something else interesting from a few years ago: a compression algorithm that's bijective. http://www3.sympatico.ca/mt0000/bicom/bicom.html http://www3.sympatico.ca/mt0000/bicom/bicom.html It's similar in the sense that there's more than one possible operation on any file (decompress it, or compress it), and different in that the file type doesn't change.