might then compress the file (ignoring the loss of whitespace
information) by representing each word as an index in the
dictionary. Retrieve the file rfc791.txt containing [Pos81], and run
your program on it. Give the size of the compressed file assuming
first that each word is encoded with 12 bits (this should be
sufficient), and then that the 128 most common words are
encoded with 8 bits and the rest with 13 bits. Assume that the
dictionary itself can be stored by using, for each word,
length(word)+1 bytes.