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Encode the string <> green grass is getting greener " using the LZ77 algorithm. The buffer size is 6 characters and the dictionary size is 8 characters N.B: the methode in the picture  is in the picture

Encode the string <> green grass is getting greener " using the LZ77 algorithm. The buffer size is 6 characters and the dictionary size is 8 characters N.B: the methode in the picture  is in the picture

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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 Encode the string <<TRAM PARAM PAM>> green grass is
getting greener " using the LZ77 algorithm. The buffer size is 6 characters and the
dictionary size is 8 characters

N.B: the methode in the picture  is in the picture

Example 33. Encode the string «ЗЕЛЕНАЯ_ ЗЕЛЕНЬ_ЗЕЛЕНЕЕТ " green grass is getting greener " using the LZ77 algorithm. The buffer size is 7 characters and the dictionary size is 9 characters. Solution Словарь (9) Буфер (7) 1 2 3 4 5 6 7 8 9 12 3 4 5 6 7 ЗЕЛЕНАЯ . . . . . 3 (0,0,JI) 3 E (7,1,H) ЗЕЛЕНАЯ ЗЕ Л Е (0,0,A) ЗЕЛЕНАЯ . ЗЕЛЕНАЯ ЗЕЛЕНАЯ ЗЕЛЕНАЯ ЗЕЛЕНАЯ ЗЕЛЕНАЯ АЯ ЗЕЛЕН Ь НЬ ЗЕЛЕНЬ ЗЕЛЕН (0,0, Я) (0,0, (1,5, b) (2,6,E) (4,1, T) ЗЕЛЕНЬ ЗЕЛЕН Е ЗЕЛЕHEET Код (0,0,3) (0,0, E) .
Transcribed Image Text:Example 33. Encode the string «ЗЕЛЕНАЯ_ ЗЕЛЕНЬ_ЗЕЛЕНЕЕТ " green grass is getting greener " using the LZ77 algorithm. The buffer size is 7 characters and the dictionary size is 9 characters. Solution Словарь (9) Буфер (7) 1 2 3 4 5 6 7 8 9 12 3 4 5 6 7 ЗЕЛЕНАЯ . . . . . 3 (0,0,JI) 3 E (7,1,H) ЗЕЛЕНАЯ ЗЕ Л Е (0,0,A) ЗЕЛЕНАЯ . ЗЕЛЕНАЯ ЗЕЛЕНАЯ ЗЕЛЕНАЯ ЗЕЛЕНАЯ ЗЕЛЕНАЯ АЯ ЗЕЛЕН Ь НЬ ЗЕЛЕНЬ ЗЕЛЕН (0,0, Я) (0,0, (1,5, b) (2,6,E) (4,1, T) ЗЕЛЕНЬ ЗЕЛЕН Е ЗЕЛЕHEET Код (0,0,3) (0,0, E) .
The code length is calculated as follows: the length of the string cannot be greater than the size of the buffer +1, and the offset cannot be greater than the size of the dictionary. Therefore, the offset binary length will be rounded up by log(dictionary size), and the binary length for the string length will be rounded up by log(buffer size +1). A character is encoded with 8 bits (for example, ASCII+). Length of the resulting code: 10 (log(9) + log(7 + 1) + 8) ≈ 10 (4 + 3 + 8), those. 150 bits. The length of the original line is 23 characters, i.e. 23* 8 = 184 bits.
Transcribed Image Text:The code length is calculated as follows: the length of the string cannot be greater than the size of the buffer +1, and the offset cannot be greater than the size of the dictionary. Therefore, the offset binary length will be rounded up by log(dictionary size), and the binary length for the string length will be rounded up by log(buffer size +1). A character is encoded with 8 bits (for example, ASCII+). Length of the resulting code: 10 (log(9) + log(7 + 1) + 8) ≈ 10 (4 + 3 + 8), those. 150 bits. The length of the original line is 23 characters, i.e. 23* 8 = 184 bits.
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