# Demo entry 6659051

**test**

Submitted by **anonymous**
on Nov 08, 2017 at 20:51

Language: Python 3. Code size: 1.3 kB.

from collections import Counter from heapq import heappush, heappop, heapify import re def encode(dic): heap = [[v, [k, ""]] for k, v in dic.items()] heapify(heap) while len(heap) > 1: heapify(heap) l = heappop(heap) r = heappop(heap) for left in l[1:]: left[1] = '0' + left[1] for right in r[1:]: right[1] = '1' + right[1] heappush(heap, [l[0] + r[0]] + l[1:] + r[1:]) return sorted(heappop(heap)[1:], key=lambda p: dic[p[0]], reverse=True) regex = re.compile("[^a-zA-Z, !?.’]") with open ("text.txt", "r",encoding='utf-8') as f: dic = Counter() for x in f: x = regex.sub('', x) x = x.lower() dic += Counter(x) huff = encode(dic) print ("Symbol\tHuffman Code") for p in huff: print ("%s\t%s" % (p[0], p[1])) total_char = sum(dic.values()) print ("If use 5-bits for each character:",total_char*5) total_num = 0 for i in dic.items(): key = i[0] for j in huff: if key == j[0]: total_num = total_num + i[1]*len(j[1]) print ("If use huffman coding:",total_num) print ("The total number of bit saves:" ,total_char*5 - total_num)

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