.Huffman Codes:
You are give a text file containing only the characters {a,b,c,d,e,f}. Let F(x) denote the frequency of a character x. Suppose that: F(a) = 13, F(b) = 4, F(c) = 6, F(d) = 17, F(e) = 2, and F(f) = 11.