Category: Algorithms & Data Structures

1. Tree problems.
(a) [10 points] Traverse the following binary tree using the four traversal algo
rithms: Preorder traversal, inorder traversal, postorder traversal, and level
order (or breadth-first) traversal.
(b) [10 points] Draw the binary search tree that results from the following op
erations in that order into an initially empty binary search tree: insert 70,
insert 40, insert 30, insert 80, insert 50, insert 20, delete 50, insert 90, insert
10, delete 70, insert 70. You are only required to show the final tree.
(c) [10 points] Draw the (2, 4) tree that results from the following operations in
that order into an initially empty tree: insert 70, insert 40, insert 30, insert
80, insert 50, insert 20, insert 90, insert 10, insert 70, insert 100, insert 60.
You are only required to show the final tree
2. Heap problems.
(a) [5 points] Draw the min-heap (tree representation) that results from the fol
lowing operations in that order into an initially empty min heap: insert 30,
insert 40, insert 10, deletemin, insert 20, insert 30, deletemin, insert 40, in
sert 20, insert 70, insert 50, deletemin, insert 60, insert 20. You should not
insert duplicate elements into the heap. You are only required to show the
f
inal tree.
1
(b) [10 points] Givenanarray, designanefficientalgorithm ISMINHEAP(A[1 n])
to check if the array represents a min-heap.
(c) [10 points] Given an array of integers A[1 n], design an efficient algorithm
COMPUTELARGESTELEMENTS(A[1 n],k)tocomputethek largestelements
of the array using a heap?
(d) [10 points] Given a minheapandakeyk,designanefficientalgorithm COM
PUTESMALLESTELEMENTSGIVENKEY(A[1 n], k)tocompute all the entries
in the heap having keys less than or equal to k. Your algorithm should run in
time proportional to the number of entries returned, and should not modify
the heap.
3. Hash table problems.
(a) [10 points] Given an array A[1 n] and a sum s, design an efficient algo
rithm EXISTSPAIR(A[1 n] s) that uses a hash table to find and return a
pair (A[i]A[j]) such that i j, that adds to sum s, i.e., A[i] + A[j] = s. If there
is no such pair, return null.
(b) Draw the 11-entry hash table that results from using the hash function H(i) =
(3 i+7) mod 11, to hash the keys 12441388239411392016and5, assum
ing collisions are handled by:
(a) [5 points] Chaining
(b) [5 points] Linear probing
(c) [5 points] Quadratic probing
4. Graph problems.
Consider the following graph. Assume that the traversals are considered in al
phabetical order and all adjacency lists are given in alphabetical order. Starting
from vertex m, showtheordering of vertices produced by the following algorithms.
(a) [5 points] Depth-first search
(b) [5 points] Breadth-first search

The file P09_01.xlsx contains a random sample of
100 lightbulb lifetimes. The company that produces
these lightbulbs wants to know whether it can claim
that its lightbulbs typically last more than 1000 burning hours.
a. Identify the null and alternative hypotheses for this
situation.
b. Can this lightbulb manufacturer claim that its
lightbulbs typically last more than 1000 hours at
the 5% significance level? What about at the 1%
significance level? Explain your answers

The Traveling Salesman Problem
Given a collection of cities, along with pairwise distances between the cities, what is the
shortest route that visits each city exactly once and returns the the starting city? This
question is commonly referred to as the traveling salesman problem (TSP). The traveling
salesman problem can be reformulated as finding a Hamiltonian cycle of least cost in a
weighted graph — a Hamiltonian cycle is a cycle that includes every vertex in the graph.
This assignment will focus on a brute-force solution to the traveling salesman problem.
Program Specifications
You will write a C++ program to implement a brute-force, permutation-based solution for
the traveling salesman problem. Your program will take in a single command line input
specifying a file to read. The input file will contain one or more lines, each of which specifies
a directed edge the form “src dst wt” where src and dst are non-negative integers indicating
the source and destination vertices of the edge, and wt is the weight of the edge. I will
provide you with sample input files for testing, but it is your responsibility make sure that
your program behaves correctly on any valid input file. Your program will output the cost
of the minimum Hamiltonian cycle. See the end of this handout for example output.
You will need to implement your own adjacency matrix or adjacency list structure to store the
graph. Take care not to over engineer your data structure — you do not need to write a full
class to implement your graph data structure. I suggest that you rely on standard template
library containers for your implementation (see https://cplusplus.com/reference/stl/). For
instance
• std::vector > adj matrix;
• std::vector > adj list;
Regardless of the data structure you choose, do not hard-code limits on your data structure
size. Also, please note that variable-length arrays (VLAs) are not part of the C++ standard
and should not be used. For your solution, you make use the std::next permutation
function.
Submission and Grading
You must use skeleton3.cpp (see iLearn) as a starting point for your program, and complete
the TSP function; feel free to create any additional helper functions or include any additional
standard libraries that you need, but do not modify any other existing functions. Your
source code should be contained in a single file and should be named after your TTU email
address excluding the “@tntech.edu” (e.g., jagraves21.cpp). All submissions will be made
on iLearn — please do not zip or compress your files. Make sure to follow best coding
practices (proper naming conventions, useful comments, etc.). Your program should compile
without errors or warnings. Programs will be compiled using the following command:
g++ -Wall -pedantic -std=c++11 [source file]
Sample Output
The following lines contain sample input and expected output to your programs. Please note
that these examples are not exhaustive, and you should verify your programs with additional
test cases.
$ ./a.out graph1.txt
18
$ ./a.out graph2.txt
14
$ ./a.out graph3.txt
No Hamiltonian cycle exists.

Student
Learning Goal: I’m working on a data analytics question and need support to help me learn.
Please complete the following 4 Dow questions from the attached pdf file reading under Dow Chemical Co.: big data in Manufacturing Page 1-15.
Require high quality work, be precise with answers.
Please reach out to me if you have any further question.
Thank You
Requirements: 4q

Customer Service Management System
The FinTech company “Alpha” is proposing a new customer service management system. The system will handle customer requests for support. The customer initiates a support ticket by sending an email to the customer support department. Then, the system assigns a ticket number. The ticket will then be evaluated. Valid tickets will be resolved. Otherwise, a rejection notice will be sent to the customer detailing the reason for rejecting the support ticket.
The system should keep track of all the tickets, and a weekly report will be generated and sent to the Management. Some support tickets require the finance team to refund payments to the customers. In that case, a refund request will be sent to the finance team that either accept or reject the request as a refund request notice. If the refund request is accepted then a refund notice will be sent to the customer. The system should keep track of all the refund requests that will be part of the weekly report. Your answer must include a screenshot of the complete Context Diagram along with the link generated from the LucidChart
Please refer to slides 7 to 24

Customer Service Management System
The FinTech company “Alpha” is proposing a new customer service management system. The system will handle customer requests for support. The customer initiates a support ticket by sending an email to the customer support department. Then, the system assigns a ticket number. The ticket will then be evaluated. Valid tickets will be resolved. Otherwise, a rejection notice will be sent to the customer detailing the reason for rejecting the support ticket.
The system should keep track of all the tickets, and a weekly report will be generated and sent to the Management. Some support tickets require the finance team to refund payments to the customers. In that case, a refund request will be sent to the finance team that either accept or reject the request as a refund request notice. If the refund request is accepted then a refund notice will be sent to the customer. The system should keep track of all the refund requests that will be part of the weekly report. Your answer must include a screenshot of the complete Context Diagram along with the link generated from the LucidChart
Please refer to slides 7 to 24

DATA STRUCTURES
Data structures are ways of organizing and storing data to perform operations efficiently. Examples include arrays, linked lists, stacks, queues, trees, and graphs.
ALGORITHMS
Algorithms, on the other hand, are step-by-step procedures or formulas for solving problems. In computer science, algorithms are used to perform computations, data processing, and automated reasoning. They often involve manipulating and processing data using various data structures.

When employees at Gold Software Company retire, they are given cash bonuses. These cash bonuses are based on the length of employment and the retiree’s age. In order to receive a bonus, an employee must be at least 50 years of age and must have worked at the company for at least 5 years. The following table summarizes the criteria for determining bonuses.
Length or emplovment
0 – 5 years
6-10 years
11-15 years
16 -20 years
21-25 years
26 or more vears
Bonus
No bonus
20% of current annual salary
30% of current annual salary
40% of current annual salary
60% of current annual salary
100% of current annual salary
Using the information provided, build a simple system using Microsoft Excel that will assist in calculating the bonuses for following employees.
Name
John Smith
AJ Singh
Mike Rogers
Jane Smith
A Kumar
J Doe
Sarah Dorman
Age
48
56
62
55
52
56
65
Years of service
15
28
18
13
8
4
28
Current Salary
65000
72500
125000
95000
85500
110000
150000
Your project work should include the following (use separate sheets in Excel for the IF and VLOOKUP functions):
Use IF function to calculate the bonuses. (40 points)
Use VLOOKUP function to calculate the bonuses. (40 points)
Design your spreadsheet to facilitate sensitivity analysis to observe the impact of changes in bonus percentage, age, and years of service. (20 points)

There are7 tasks given. It looks long but most of the parts you just need to read it. Only use the help and codes provided by the assignment.

I need 2 for picture q-1
‏the superframe in zigbee and the )
‏(superframe structure
Add in report picture
Add the reference with the repertory
‏ Five references for each report
Harvard method is required for references
Q-2
I need flowchart(I’ve included a solution file to help you figure out what’s needed the. There is also a clip on YouTube explaining how to solve the question, but it is in Arabic, but you may benefit from it. (((Please do not copy the solutions that I sent you as samples. They are only samples to make it easier for you to understand the solution and what is required from you.)))finally. Don’t forget to make the solution look like it was done by an ordinary, non-professional student. Please make sure that the solution does not contain any plagiarism)