;; Exercise 2.71. Suppose we have a Huffman tree for an alphabet of n symbols, and that the relative frequencies of the symbols are 1, 2, 4, ..., 2^n-1. Sketch the tree for n=5; for n=10. In such a tree (for general n) how may bits are required to encode the most frequent symbol? the least frequent symbol?

;; huffman tree for n=5 (below)

;; huffman tree for n=10 is also similar.

;; bits to encode most frequent symbol = n-1

;; bits to encode least frequent symbol = 1

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