EBK ENHANCED DISCOVERING COMPUTERS & MI
1st Edition
ISBN: 8220100606922
Author: Vermaat
Publisher: YUZU
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Expert Solution & Answer
Chapter 5, Problem 1IR
Explanation of Solution
a)
Websites:
The news websites taken into consideration are “bbc” and “nbcnews”.
Information format:
- In addition to textual descriptions, news information is provided in the form of videos, links, images, and animation.
- Other information formats often prove to attract the website visitors than the text contents.
- They often increase the visitors comprehension.
Better analysis:
- The coverage story of “bbc” offers a better analysis.
- The site provides exclusive video coverage of the story.
- It also provides expert articles, their videos on the story for better understanding.
Easy navigation:
The “bbc” source is easy to navigate and read and this is because the menu structure of the website is great.
Knowledge gained from the international news story:
- The news offers a unique perspective on the environmental threats that the world is facing...
Explanation of Solution
b)
Information details that supplements the forecast conditions:
- Weather website taken into consideration is “Accuweather”.
- The city taken into consideration is “New York, United States”.
- Forecast condition: heavy thunderstorms and downpour...
Explanation of Solution
c)
Sport website:
- The sport website taken into consideration is “espncricinfo”.
- The first story reported is about “Cricket world cup”.
- The story provide complete summary of the cricket world cup.
Coverage of the story:
- Complete summary of the cricket world cup.
- Aftermath of the cricket world cup.
- About what people loved and disappointed in the world cup.
Sources quoted:
- “ESPNcricinfo.com” staff sources were primarily quoted in the story.
- International Cricket Council (ICC) sources were also quoted in the story...
Expert Solution & Answer
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Students have asked these similar questions
Design a dynamic programming algorithm for the Longest Alternating Subsequence problem
described below:
Input: A sequence of n integers
Output: The length of the longest subsequence where the numbers alternate between being larger and
smaller than their predecessor
The algorithm must take O(n²) time. You must also write and explain the recurrence.
Example 1:
Input: [3, 5, 4, 1, 3, 6, 5, 7, 3, 4]
Output: 8 ([3, 5, 4, 6, 5, 7, 3, 4])
Example 2:
Input: [4,7,2,5,8, 3, 8, 0, 4, 7, 8]
Output: 8 ([4, 7, 2, 5, 3, 8, 0,4])
(Take your time with this for the subproblem for this one)
Design a dynamic programming algorithm for the Coin-change problem described below:
Input: An amount of money C and a set of n possible coin values with an unlimited supply of each
kind of coin.
Output: The smallest number of coins that add up to C exactly, or output that no such set exists.
The algorithm must take O(n C) time. You must also write and explain the recurrence.
Example 1:
Input: C24, Coin values = = [1, 5, 10, 25, 50]
Output: 6 (since 24 = 10+ 10+1+1 +1 + 1)
Example 2:
Input: C = 86, Coin values = [1, 5, 6, 23, 35, 46, 50]
Output: 2 (since 86 = 46+35+5)
Design a dynamic programming algorithm for the Longest Common Subsequence problem de-
scribed below
Input: Two strings x = x1x2 xm and y = Y1Y2... Yn
Output: The length of the longest subsequence that is common to both x and y.
.
The algorithm must take O(m n) time. You must also write and explain the recurrence.
(I want the largest k such that there are 1 ≤ i₁ < ... < ik ≤ m and 1 ≤ j₁ < ... < jk ≤ n such that
Xi₁ Xi2 Xik = Yj1Yj2 ··· Yjk)
Example 1:
Input: x = 'abcdefghijklmnopqrst' and y = 'ygrhnodsh ftw'
Output: 6 ('ghnost' is the longest common subsequence to both strings)
Example 2:
Input: x = 'ahshku' and y = ‘asu'
Output: 3 ('asu' is the longest common subsequence to both strings)
Chapter 5 Solutions
EBK ENHANCED DISCOVERING COMPUTERS & MI
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