MAT.SCIENCE+ENGIN.(PERUSALL ACCESS)
10th Edition
ISBN: 2818440149658
Author: Callister
Publisher: PERUSALL
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Question
Chapter 1, Problem 2QAP
To determine
The three items that are made from metals or their alloys. The specific metal or alloy used for each item and its characteristic.
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Create 6 users: Don, Liz, Shamir, Jose, Kate, and Sal.
Create 2 groups: marketing and research.
Add Shamir, Jose, and Kate to the marketing group.
Add Don, Liz, and Sal to the research group.
Create a shared directory for each group.
Create two files to put into each directory:
spreadsheetJanuary.txt
meetingNotes.txt
Assign access permissions to the directories:
Groups should have Read+Write access
Leave owner permissions as they are
“Everyone else” should not have any access
Submit for grade:
Screenshot of /etc/passwd contents showing your new users
Screenshot of /etc/group contents showing new groups with their members
Screenshot of shared directories you created with files and permissions
Given the following knapsack problem:
item
weight
value
1
2 lbs
$40
2
5 lbs
$65
3
6 lbs
$72
4 lbs
$60
Knapsack capacity W=12
Find the most valuable subset of the items that fit into the knapsack. You must show and explain your
intermediate steps for the following questions.
a) If it is a fractional knapsack problem, provide the optimal solution using greedy algorithm (Greedy strategy:
choosing items with greatest value per pound)
b) If it is a 0-1 knapsack problem, provide the optimal solution using dynamic programming (you need to
provide the optimal value, the list of items that make up the optimal solution, and the V table)
V[k, w]
=
V[k - 1,w]
-
if wk > w
[max{ V[k − 1, w], V[k − 1, w − Wk] + vk} else
show workings and explaination
Chapter 1 Solutions
MAT.SCIENCE+ENGIN.(PERUSALL ACCESS)
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