Modify the Huffman program so that it can encode and decode actual ASCII text files. Encoding a typical large file should actually compress it. Use the text being encoded to find the character frequency and store the Huffman tree as the first object in the compressed file.
Create a class IntList which acts like an ArrayList, but uses raw ints instead of Integers. Modify the BTree and BTreeNode classes to use this class. How does this affect the amount of space used on disk for each node?