Huffman Code

So this is another little assignment that we had just before final exams. It’s about Huffman code and its application in file compression. We were supposed to write a program to read a file, determine total bits for that file, then use Huffman code to compress it and calculate the total bits after the compression. The file should only contain alphanumeric characters [A-Za-z0-9], and maybe spaces, new lines and dots and commas.