Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Related questions
Concept explainers
Question
Format Requirement
-
Algorithms in pseudo code MUST be placed in code blocks/fences, and use either the cpp or java syntax highlighter.
-
Algorithms should follow the pseudo code standard described in handout 1.
- Your pseudo code should be placed in a code block, for example
Algorithm alg_name(a, b) { // A description of the algorithm // input: a - a positive decimal integer; b - an integer // ouput: the sum of a and b c = a + b // or, c <- a + b return c } -
Do NOT change the template except the answer portion.
-
Formulas and equations should be in math mode using Latex math symbols.
- Markdown math tutorial: http://tug.ctan.org/info/undergradmath/undergradmath.pdf
- Ways enter into the math mode in Notion: https://www.notion.so/help/math-equations
![**Problem 6:**
**Consider the following graph:**
![Graph Image]()
```
f
/ \
b---c
/| |\
a | | g
\| |/
d---e
```
1. **Write down the adjacency matrix and adjacency lists specifying this graph. (Assume that the matrix rows and columns and vertices in the adjacency lists follow in the alphabetical order of the vertex labels.)**
2. **Starting at vertex \( a \) and resolving ties by the vertex alphabetical order, traverse the graph by depth-first search and construct the corresponding depth-first search tree. Give the order in which the vertices were reached for the first time (pushed onto the traversal stack) and the order in which the vertices became dead ends (popped off the stack).**
### Answer:
(Note to students: Detailed solutions to these problems should be written below)
1. **Adjacency Matrix:**
| | a | b | c | d | e | f | g |
|----|---|---|---|---|---|---|---|
| a | 0 | 1 | 0 | 1 | 0 | 0 | 0 |
| b | 1 | 0 | 1 | 1 | 0 | 1 | 0 |
| c | 0 | 1 | 0 | 1 | 0 | 1 | 1 |
| d | 1 | 1 | 1 | 0 | 1 | 0 | 0 |
| e | 0 | 0 | 1 | 1 | 0 | 0 | 1 |
| f | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
| g | 0 | 0 | 1 | 0 | 1 | 0 | 0 |
2. **Adjacency Lists:**
- a: {b, d}
- b: {a, c, d, f}
- c: {b, d, e, f, g}
- d: {a, b, c, e}
- e: {c, d, g}
- f: {b, c}
- g: {c, e}
3. **Depth-First Search](https://content.bartleby.com/qna-images/question/bad9eda7-57c9-475e-b126-0f24ea0e5433/acaf3196-65f7-43fe-84c2-c803238d0e9d/552r9k9_processed.jpeg)
Transcribed Image Text:**Problem 6:**
**Consider the following graph:**
![Graph Image]()
```
f
/ \
b---c
/| |\
a | | g
\| |/
d---e
```
1. **Write down the adjacency matrix and adjacency lists specifying this graph. (Assume that the matrix rows and columns and vertices in the adjacency lists follow in the alphabetical order of the vertex labels.)**
2. **Starting at vertex \( a \) and resolving ties by the vertex alphabetical order, traverse the graph by depth-first search and construct the corresponding depth-first search tree. Give the order in which the vertices were reached for the first time (pushed onto the traversal stack) and the order in which the vertices became dead ends (popped off the stack).**
### Answer:
(Note to students: Detailed solutions to these problems should be written below)
1. **Adjacency Matrix:**
| | a | b | c | d | e | f | g |
|----|---|---|---|---|---|---|---|
| a | 0 | 1 | 0 | 1 | 0 | 0 | 0 |
| b | 1 | 0 | 1 | 1 | 0 | 1 | 0 |
| c | 0 | 1 | 0 | 1 | 0 | 1 | 1 |
| d | 1 | 1 | 1 | 0 | 1 | 0 | 0 |
| e | 0 | 0 | 1 | 1 | 0 | 0 | 1 |
| f | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
| g | 0 | 0 | 1 | 0 | 1 | 0 | 0 |
2. **Adjacency Lists:**
- a: {b, d}
- b: {a, c, d, f}
- c: {b, d, e, f, g}
- d: {a, b, c, e}
- e: {c, d, g}
- f: {b, c}
- g: {c, e}
3. **Depth-First Search
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by stepSolved in 2 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- Problem: UMLThis exercise is for a simplified supermarket cash register system. The normal procedure for using the cash register is as follows:• A customer arrives at the checkout with items to pay.• The cashier records the identification number of each item, as well as the quantity if it is greater than one.• The checkout displays the price of each item and its description.• When all purchases are recorded, the cashier signals the end of the sale.• The cash register displays the total purchases.• The customer chooses his method of payment:✓ cash: the cashier collects the money received; the cashier indicates the currency to be returned to the customer;✓ check: the cashier checks the creditworthiness of the customer by transmitting a request to an authorization center via the cashier;✓ credit card: a bank terminal is part of the cash register. It transmits an authorization request to an authorization center according to the type of card.• The cash register registers the sale and prints…arrow_forwardFormat Requirement Algorithms in pseudo code MUST be placed in code blocks/fences, and use either the cpp or java syntax highlighter. Algorithms should follow the pseudo code standard described in handout 1. Your pseudo code should be placed in a code block, for example Algorithm alg_name(a, b) { // A description of the algorithm // input: a - a positive decimal integer; b - an integer // ouput: the sum of a and b c = a + b // or, c <- a + b return c } Do NOT change the template except the answer portion. Formulas and equations should be in math mode using Latex math symbols. Markdown math tutorial: http://tug.ctan.org/info/undergradmath/undergradmath.pdf Ways enter into the math mode in Notion: https://www.notion.so/help/math-equationsarrow_forwardVocabulary Task (C language) Natural language processing (NLP) is a field of artificial intelligence that seeks to develop the ability of a computer program to understand human language. Usually, the first step of an NLP system is to convert words into numeric codes. Thus, the system converts an input text into a sequence of numeric codes before any high-level analysis. This process is known as text preprocessing. We can only perform text preprocessing if we have a vocabulary of words and their associated numeric codes. Your task is to create a vocabulary of unique words for a given text file and assign a different number from 1 to N to each unique word, with N being the total number of unique words. You must perform this assignment so that the first word in alphabetical order gets the number 1, the second word in alphabetical order gets the number 2, and so on. A word is a sequence of letters (uppercase or lowercase). The file is composed of letters and white spaces (spaces, tabs,…arrow_forward
- C++ and pseudocodearrow_forwardPlease help me with this Principles of programming language homework questionarrow_forwardT The information in DNA is stored as a code made up of four chemical bases which are represented by four upper case letters A, T, G, C. An example DNA sequence could be: ATGAG An interesting phenomena here is that when two DNA sequences are attempted to combine, A can only pair with T whereas G can only pair with C. Two DNA sequences for example ATGC and TACG are considered 'fully complementary' because the bases (letters) in every index position can be paired to each other (see the image). ATGC ATGC ATGC XX TACG Fully Complementary TACC SNP TTCA CA Non Complementary Two DNA sequences for example ATGC and TACC are considered 'SNP type' because there is exactly one index position (last position in this case) in which the bases(letters) can not be paired. Two DNA sequences for example ATGC and TTCA are considered "non complementary' because there are more than one index position (second and fourth in this case) in which the bases can not be paired. Write a program that will ask the user…arrow_forward
- The code box below defines a variable route as a list of directions to navigate a maze. Each instruction is one of the following four basic commands: higher move one step in the positive y direction • lower. move one step in the negative y direction • left: move one step in the negative x direction • right: move one step in the positive x direction Define a function step that takes two arguments, a location (as a tuple of x and y coordinates) and an instruction (higher, lower, left, right) as a string. Given the provided location, it should return the new location (as a tuple of x and y coordinates) when following the specified instruction. If the instruction is invalid, the old location should be returned. Use the function step to determine the final position when starting from the point (0, -4) and following all instructions in the list route. Assign this final position to the variable final_point.arrow_forwardFormat Requirement Algorithms in pseudo code MUST be placed in code blocks/fences, and use either the cpp or java syntax highlighter. Algorithms should follow the pseudo code standard described in handout 1. Your pseudo code should be placed in a code block, for example Algorithm alg_name(a, b) { // A description of the algorithm // input: a - a positive decimal integer; b - an integer // ouput: the sum of a and b c = a + b // or, c <- a + b return c } Do NOT change the template except the answer portion. Formulas and equations should be in math mode using Latex math symbols. Markdown math tutorial: http://tug.ctan.org/info/undergradmath/undergradmath.pdf Ways enter into the math mode in Notion: https://www.notion.so/help/math-equationsarrow_forwardin c++ using 2D Arrays The following diagram represents an island with dry land (represented by “-“) surrounded by water ((represented by “#“). ##-########## #-----------# #-----------# #------------ # -----------# #------X----# #-----------# ############# Two bridges lead off the island. A mouse (represented by “X”) is placed on the indicated square. Write a program to make the mouse take a walk across the island. The mouse is allowed to travel one square at a time, either horizontally or vertically. A random number from 1 to 4 should be used to decide which direction the mouse is to take; for the sake of uniformity assume that 1 = up, 2 = down, 3 = left, and 4 = right. Since the mouse is wearing cement mouse galoshes, the mouse drowns when he hits the water. He escapes when he steps on a bridge. You may generate a random number up to 100 times allowing the mouse to take 100 steps. If the mouse does not find a bridge by the 100th try, he will wither away and die of starvation.…arrow_forward
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
- Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill Education
Starting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSON
Digital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON 
C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSON
Database Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage Learning
Programmable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
Database System Concepts
Computer Science
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:McGraw-Hill Education
Starting Out with Python (4th Edition)
Computer Science
ISBN:9780134444321
Author:Tony Gaddis
Publisher:PEARSON
Digital Fundamentals (11th Edition)
Computer Science
ISBN:9780132737968
Author:Thomas L. Floyd
Publisher:PEARSON
C How to Program (8th Edition)
Computer Science
ISBN:9780133976892
Author:Paul J. Deitel, Harvey Deitel
Publisher:PEARSON
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781337627900
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Programmable Logic Controllers
Computer Science
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education