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Instructions

Please read the following instructions carefully before submitting assignment:

It should be clear that your assignment will not get any credit if:

  • The assignment is submitted after due date.
  • The submitted assignment does not open or file is corrupt.
  • Solution is copied from any other source.

Objective

The objective of this assignment is to;

  • Learn the working of Huffman Encoding Algorithm
  • Understand its application

Assignment

10 Marks

Part 1:

 

Suppose you are working in an office and want to send a large size text document to your boss via email. Your file is too large for sending as an email attachment as your email service provider allows you to send files only up to a certain size limit.

 

To cope with this issue, you decided to use Huffman encoding algorithm to compress your document size. Given below is the frequency table for characters used in that document.

Character

Frequency

A

25

D

10

M

30

S

15

T

3

Y

55

 

 

 

 

 

 

 

 

 

 

Your Task:

 

Your task is to Create Huffman encoding tree using greedy approach.

 

 

 

 

 

 

10  Marks

Part 2:

In this part, you are provided with working code of Huffman algorithms huffman.cpp. The code is self explanatory and comments are added where necessary. This is a very nice, simple and powerful algorithm for compression.

We have applied this algorithm on two sample statements to get its encoded text. Output for both statements is given below.

You can see input statements and its associated results. Both input statements have same size (448 bits) but size of encoded text is different. You can verify the same results by running given code.

You need to understand the working of Huffman Algorithm. Attached C++ code will help.

You are required to explain the reasons behind difference in encoding/compression results. The first statement “A quick brown…” having size 448 bits was compressed to 259 bits after encoding. While the second statement “admission success…” having same size (448 bits) was compressed to 198 bits after encoding.

In above case, why one statement was compressed more than other by Huffman encoding algorithms?

 

Submission

You are required to submit your solution through LMS as MS Word document containing your answer to part 1 and your arguments and reasons to the given question in part 2.

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Replies to This Discussion

bhi upload kr do is may poochnay wali kon c baat hn ):

bhai plz share the compete solution  +Nabeel Khan

g bhai plz uplod kr dain 

Assignment solution please 

upload lease bhai jan

please send me at this email id Syedadash@gmail.com

anybody plzzzzzzzzzz share 2nd question answer fastly

first question?

Please tell me is the correct or not 

in question number 2 both statements contain the difference of the type of charterer

 

Becasue the frequency of characters in a string, 
The string having more frequent chars, will be lesser in size. 

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