COMPUTER SCIENCE ILLUMINATED
7th Edition
ISBN: 9781284208047
Author: Dale
Publisher: JONES+BART
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Expert Solution & Answer
Chapter 3, Problem 51E
Explanation of Solution
Data Compression using Run-length encoding:
Given string: “AAAABBBCCCCCCCCDDDD hi there EEEEEEEEEFF”
- Data compression starts with flag character “*”.
- It replaces a string containing sequence of repeated character.
- Followed by a flag character, remaining characters in a string are encoded as follows,
- The string “AAAA” is compressed as “A4” where numeric digit “4” indicates that the character “A” is repeated four times in a string.
- The string “CCCCCCCC” is compressed as “C8” where numeric digit “8” indicates that the character “C” is repeated eight times in a string...
Explanation of Solution
Compression ratio in Run-length encoding:
- Compression ratio is defined as the length of encoded sting is divided by the length of original string.
- Formula to compute the compression ratio,
- The length of original string “AAAABBBCCCCCCCCDDDD hi there EEEEEEEEEFF” is 40.
- The length of compressed string “*A4BBB*C8*D4 hi there *E9FF” is 27
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Chapter 3 Solutions
COMPUTER SCIENCE ILLUMINATED
Ch. 3 - Prob. 1ECh. 3 - Prob. 2ECh. 3 - Prob. 3ECh. 3 - Prob. 4ECh. 3 - Prob. 5ECh. 3 - Prob. 6ECh. 3 - Prob. 7ECh. 3 - Prob. 8ECh. 3 - Prob. 9ECh. 3 - Prob. 10E
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