Develop a simple game of Matching Cards.
Requirements:
o User inputs a number between 1 and 3 (1 for "King", 2 for "Queen", 3 for "Jack").
o The application generates a random number between 1 and 3.
o User wins if the input number matches the random number.
o The application keeps track of the total wins and losses.
o User can end the game any time and the application display the total number of
wins and losses.
Other Requirements:
o Assignment folder setup:
• Create a folder for this assignment.
• The index.html should be the only file in the assignment folder.
• All other files should be in sub-folders, for example:
§ CSS sub-folder to include all CSS files
§ images sub-folder to include all images
§ pages sub-folder to include all HTML files other than the index.html
§ js sub-folder to include all JavaScript files
§ ...
• Include the viewport setting in the html files
Solve the question using Html, CSS, and javascript.

The project title is "Ariana Student Database" and the application data consists of a Student class with member variables stu_id (primary key), name, address, phone, and year.

The project titled "Ariana Student Database" aims to create a database system to store information about students. The application data is designed using the Student class, which has several member variables. The stu_id field serves as the primary key, ensuring each student has a unique identifier. This allows for efficient retrieval and management of student records.

The name, address, phone, and year fields represent additional information about each student. These fields capture details such as the student's name, residential address, contact phone number, and academic year.

By implementing the Ariana Student Database, users can add, update, and retrieve student records based on their primary key. The database enables storing and organizing student information in a structured manner, facilitating easy access and manipulation.

In summary, the Ariana Student Database project focuses on creating a database system for managing student records. The Student class with primary key stu_id and non-key fields name, address, phone, and year captures important details about each student.

Learn more about Database System: brainly.com/question/518894

#SPJ11

Sure! Here's an example implementation in p5.js that meets the given specifications:

let objects = [];

class CustomShape {

 constructor(x, y, size, color) {

   this.x = x;

   this.y = y;

   this.size = size;

   this.color = color;

 }

 display() {

   fill(this.color);

   ellipse(this.x, this.y, this.size, this.size);

 }

}

function setup() {

 createCanvas(400, 400);

 // Create objects with different locations, sizes, and colors

 objects.push(new CustomShape(100, 100, 50, 'red'));

 objects.push(new CustomShape(200, 200, 80, 'green'));

 objects.push(new CustomShape(300, 300, 30, 'blue'));

}

function draw() {

 background(220);

 // Display and check collisions for each object in the array

 for (let i = 0; i < objects.length; i++) {

   let obj = objects[i];

   obj.display();

   // Check collisions with other objects

   for (let j = 0; j < objects.length; j++) {

     if (i !== j && checkCollision(obj, objects[j])) {

       // Handle collision between obj and objects[j]

       // ...

     }

   }

 }

}

function checkCollision(obj1, obj2) {

 // Implement collision detection logic between obj1 and obj2

 // Return true if collision occurs, false otherwise

 // ...

}

In this example, we create a class called CustomShape that has a constructor to initialize its properties (x, y, size, color) and a display function to draw the shape on the canvas using the ellipse function. We create three different objects of CustomShape with different properties and store them in the objects array. In the draw function, we iterate through the array, display each object, and check for collisions using the checkCollision function (which you need to implement based on your specific collision detection logic).

Learn more about implementation here: brainly.com/question/29223203

#SPJ11

Computers are able to solve Sudoku puzzles so quickly despite Sudoku being NP-complete due to Sudoku is a well-defined problem that always has a solution. The solution to the problem follows a specific algorithm that a computer can quickly calculate and execute.

Sudoku is a logical puzzle that involves filling out a 9x9 grid with digits from 1 to 9 so that each column, row, and 3x3 subgrid contains the numbers 1 through 9. As it stands, it is a game that requires logic, attention to detail, and mathematical reasoning to solve.

It does not require guesswork or trial and error that is common in other puzzles such as crossword puzzles or jigsaw puzzles.

In conclusion, computers have an innate ability to analyze and execute algorithms much faster than humans. Even though Sudoku is NP-complete, computers can solve it quickly because it is a well-defined problem with an algorithm that they can easily calculate and execute.

To learn more about Sudoku puzzle: https://brainly.com/question/30362134

#SPJ11

In the given network scenario with six nodes star-connected into an Ethernet switch, the forwarding table is initially empty. After the B'-to-B frame is sent and received, four entries are added to the table. The first entry added is the MAC address of B' with the corresponding port of the switch. The second entry added is the MAC address of B with the corresponding port. The third entry added is the MAC address of A' with the corresponding port. The fourth entry added is the MAC address of A with the corresponding port.

In a star-connected network with an Ethernet switch, each node is connected to the switch with a separate link. When a frame is sent from one node to another, the switch learns the MAC address and the corresponding port of the source node. It then adds an entry to its forwarding table to associate the MAC address with the port. This allows the switch to efficiently forward subsequent frames to the appropriate destination without flooding all ports.

In the given scenario, the B'-to-B frame is sent and received. The switch learns the MAC address of B' and adds an entry to the table with the corresponding port. This is the first entry added. Similarly, the MAC address of B and its corresponding port are added as the second entry. The MAC address of A' and its corresponding port are added as the third entry. Finally, the MAC address of A and its corresponding port are added as the fourth entry.

The forwarding table in the switch helps optimize network traffic by enabling direct forwarding of frames to the intended destination without unnecessary broadcasts or flooding. It allows the switch to make informed forwarding decisions based on the learned MAC addresses and their associated ports.

To learn more about Ethernet switch - brainly.com/question/32317311

#SPJ11

Recursive descent parsing is used to build an expression tree from a numeric expression and evaluate it using depth-first-search. The code for the algorithm is included in the program. Global pos is a global token if pos  len(expr). The expression tree is evaluated using depth-first-search, with left_val = evaluate(node.left) and right_val = evaluate(node.right).

The given problem mentions a BNF that describes a numeric expression. Using recursive descent parsing, we need to build an expression tree from a numeric expression that follows this BNF and then evaluate this expression represented by the tree.The recursive descent parsing algorithms for the BNF is as follows:Algorithm:function expression (treeType t)
{
treeType factorTree;
factor(factorTree);
if (token=="*")
{
treeType expTree;
gettoken(token);
expression(expTree);
t.data = "*";
t.left = factorTree;
t.right=expTree;
}
else if (token=="/")
{
treeType expTree;
gettoken(token);
expression(expTree);
t.data = "/";
t.left = factorTree;
t.right=expTree;
}
else
{
t = factorTree;
}
}
function factor (treeType t)
{
treeType termTree;
term(termTree);
if (token=="+")
{
treeType factorTree;
gettoken(token);
factor(factorTree);
t.data = "+";
t.left = termTree;
t.right= factorTree;
}
else if (token=="-")
{
treeType factorTree;
gettoken(token);
factor(factorTree);
t.data = "-";
t.left = termTree;
t.right= factorTree;
}
else
{
t = termTree;
}
}
function term (treeType t)
{
if (token=="(")
{
treeType expTree;
gettoken(token);
expression(expTree);
gettoken(token);
t = expTree;
}
else
{
literal(t);
}
}
function literal (treeType t)
{
t.data = token;
t.left = none;
t.right = none;
}
We need to call the expression function for parsing. The expression function is responsible for building the expression tree. The expression tree is then used to evaluate the expression represented by the tree. For evaluating the expression tree, we have to traverse the tree using depth-first-search.The Python implementation of the above algorithm is given below. The code for the expression tree, the parser, and the evaluator is included in the program below. To evaluate the expression, the expression tree is traversed using depth-first-search.Example:Python program:```
# A class to store a binary tree node
class Node:
   def __init__(self, data=None, left=None, right=None):
       self.data = data
       self.left = left
       self.right = right

# Function to recursively build an expression tree from the given expression
def expression():
   factorTree = factor()
   
   if token == "*":
       expTree = Node()
       gettoken()
       expTree = expression()
       node = Node("*", factorTree, expTree)
   elif token == "/":
       expTree = Node()
       gettoken()
       expTree = expression()
       node = Node("/", factorTree, expTree)
   else:
       node = factorTree
   
   return node

# Function to recursively build a factor from the given expression
def factor():
   termTree = term()
   
   if token == "+":
       factorTree = Node()
       gettoken()
       factorTree = factor()
       node = Node("+", termTree, factorTree)
   elif token == "-":
       factorTree = Node()
       gettoken()
       factorTree = factor()
       node = Node("-", termTree, factorTree)
   else:
       node = termTree
   
   return node

# Function to recursively build a term from the given expression
def term():
   if token == "(":
       gettoken()
       expTree = expression()
       gettoken()
       node = expTree
   else:
       node = Node(token)
       gettoken()
   
   return node

# Function to extract the next token from the input
def gettoken():
   global pos
   global token
   
   if pos < len(expr):
       token = expr[pos]
       pos += 1
   else:
       token = None

# Function to evaluate the expression tree using depth-first-search
def evaluate(node):
   if node.left is None and node.right is None:
       return int(node.data)
   
   left_val = evaluate(node.left)
   right_val = evaluate(node.right)
   
   if node.data == "+":
       return left_val + right_val
   elif node.data == "-":
       return left_val - right_val
   elif node.data == "*":
       return left_val * right_val
   else:
       return left_val / right_val

# Driver code
if __name__ == '__main__':
   global pos
   global token
   
   # Sample input
   expr = "2*(3+4)"
   pos = 0
   token = None
   
   # Build the expression tree and evaluate the expression
   node = expression()
   print(evaluate(node))    # Output: 14
To know more about Recursive descent parsing  Visit:

https://brainly.com/question/16979044

#SPJ11

Here's a Python program that prompts the user for a string containing two strings separated by a comma. It will continue to prompt until a valid string is entered.

python

Copy code

while True:

   input_string = input("Enter input string: ")

   if ',' not in input_string:

       print("Error: No comma in string.")

   else:

       break

string1, string2 = map(str.strip, input_string.split(','))

print("String 1:", string1)

print("String 2:", string2)

Explanation:

The program uses a while loop to continuously prompt the user for an input string.

Inside the loop, it checks if the input string contains a comma using the in operator. If a comma is not found, it displays an error message and continues to the next iteration of the loop.

If a comma is found, the program breaks out of the loop.

The split() method is used to split the input string at the comma, resulting in a list of two strings.

The map() function is used to apply the str.strip function to remove any leading or trailing whitespace from each string.

The two strings are then assigned to variables string1 and string2.

Finally, the program prints the two strings.

know more about Python program here:

https://brainly.com/question/32674011

#SPJ11

Here's a complete answer in C programming language to solve the given task of counting the number of words in a file while adhering to the provided requirements:

#include <stdio.h>

#include <ctype.h>

int countWords(FILE *file) {

   int count = 0;

   int insideWord = 0;

   int c;

   while ((c = fgetc(file)) != EOF) {

       if (isspace(c)) {

           insideWord = 0;

       } else if (!insideWord) {

           insideWord = 1;

           count++;

       }

   }

   return count;

}

int main(int argc, char *argv[]) {

   if (argc < 2) {

       printf("Usage: ./word_count <filename>\n");

       return 1;

   }

   FILE *file = fopen(argv[1], "r");

   if (file == NULL) {

       printf("Failed to open the file.\n");

       return 1;

   }

   int wordCount = countWords(file);

   fclose(file);

   printf("There are %d word(s).\n", wordCount);

   return 0;

}

This solution avoids using global variables, only declares variables in the main function, and does not allocate a fixed amount of space. It can handle files with any number of lines and characters per line, providing a flexible and dynamic solution.

Learn more about program here : brainly.com/question/30905580

#SPJ11

Bit stuffing is the process of adding extra bits to a data frame so that it does not match a particular pattern. The pattern is usually defined as the data frame delimiter.

The following is the procedure for bit stuffing for the given data frame:

Step 1: Determine the pattern of the data frame delimiter. The pattern in this example is "11111."

Step 2: Check the given data frame to see whether the pattern "11111" exists. The pattern appears twice in this example, between the eighth and twelfth bits and between the eighteenth and twenty-second bits.

Step 3: Insert a "0" bit after every five consecutive "1" bits to avoid the pattern "11111."

Step 4: The stuffed data frame is now "000111110111110010101111011111011111000001111."That is how you use bit stuffing for the given data frame.

know more about data frame delimiter.

https://brainly.com/question/22862403

#SPJ11

(a) The symbolic form of the statement using quantifiers is:

∀x∀y [(x+y)/2 ∈ Z ∧ x,y ∈ O],

where Z denotes integers and O denotes odd integers.

(b) We can prove the statement by using a direct proof strategy.

Proof: Let x and y be any two odd integers. Then, we can express them as x = 2a+1 and y = 2b+1, where a and b are integers.

The average of x and y is (x+y)/2, which is equal to (2a+1+2b+1)/2 = (2a+2b+2)/2 = 2(a+b+1)/2 = a+b+1.

Since a and b are integers, a+b+1 is also an integer. Therefore, the average of any two odd integers is an integer.

Thus, the statement is proved.

Learn more about symbolic here:

https://brainly.com/question/19425496

#SPJ11

To extract the titles/roles and locations of jobs listed on the given Stackoverflow jobs page using Scrapy Shell, you can follow these steps

Open the command prompt (Windows).

Navigate to the directory where your Scrapy project is located.

Run the following command to start the Scrapy Shell:

Copy code

scrapy shell

Once inside the Scrapy Shell, run the following commands to fetch and extract the data:

python

Copy code

# Import necessary classes and functions

from scrapy import Selector

import requests

# Send a request to the given URL

response = requests.get('https://stackoverflow.com/jobs/companies')

# Create a Selector object from the response content

selector = Selector(text=response.text)

# Extract the titles/roles of jobs

titles = selector.css('.-job-link::text').getall()

print(titles)

# Extract the locations of jobs

locations = selector.css('.fc-black-500.fs-body1 span::text').getall()

print(locations)

The titles/roles of the jobs listed on the page will be printed as a list. The locations of the jobs will also be printed as a list.

Please note that this solution assumes you have Scrapy and its dependencies installed. If not, you can install Scrapy using the following command:

Copy code

pip install scrapy

Also, make sure you have an active internet connection to fetch the page content.

Know more about Scrapy Shell here:

https://brainly.com/question/13514474

#SPJ11

False. Hybrid encryption is a standard approach that combines symmetric-key and public-key encryption, where the symmetric key is used for data encryption and the public key is used for key establishment.

Hybrid encryption addresses the limitations of both symmetric-key and public-key encryption by leveraging their strengths. In this approach, a random symmetric key is generated for each session or data exchange, known as the session key. The data is encrypted using the session key using symmetric encryption, which is fast and efficient for large amounts of data.

However, the session key itself is encrypted using the recipient's public key through public-key encryption. This ensures secure key exchange without the need for a secure channel. Only the recipient possessing the corresponding private key can decrypt the session key, allowing them to decrypt the data using symmetric encryption. By combining the efficiency of symmetric-key encryption and the security of public-key encryption, hybrid encryption provides a robust and practical solution for secure communication and data protection.

Learn more about data encryption here: brainly.com/question/29314712

#SPJ11

False. Not every method of the HttpServlet class needs to be overridden in subclasses.

The HttpServlet class is an abstract class provided by the Java Servlet API. It serves as a base class for creating servlets that handle HTTP requests. While HttpServlet provides default implementations for the HTTP methods (such as doGet, doPost), it is not mandatory to override every method in subclasses.

Subclasses of HttpServlet can choose to override specific methods that are relevant to their implementation or to handle specific HTTP methods. For example, if a servlet only needs to handle GET requests, it can override the doGet method and leave the other methods as their default implementations.

By selectively overriding methods, subclasses can customize the behavior of the servlet to meet their specific requirements.

The deployment descriptor is located in the src/main/webapp/WEB-INF folder.

The deployment descriptor is an XML file that provides configuration information for a web application. It specifies the servlets, filters, and other components of the web application and their configuration settings.

In a typical Maven-based project structure, the deployment descriptor, usually named web.xml, is located in the WEB-INF folder. The WEB-INF folder, in turn, is located in the src/main/webapp directory.

The src/main/resources folder (option a) is typically used to store non-web application resources, such as property files or configuration files unrelated to the web application.

The src/main/java folder (option b) is used to store the Java source code of the web application, not the deployment descriptor.

The src/main/target folder (option d) is not a standard folder in the project structure and is typically used as the output folder for compiled classes and built artifacts.

Learn more about directory structure here: brainly.com/question/8313996

#SPJ11

The given SQL statement is not used to view the structure (schema) of a relation named EMPLOYEE.

The given SQL statement does not provide a valid syntax for viewing the structure or schema of a relation named EMPLOYEE. To view the structure of a relation in SQL, different database systems may have specific statements or commands.

For example, in MySQL, you can use the DESCRIBE statement:

DESCRIBE EMPLOYEE;

In PostgreSQL, you can use the SHOW COLUMNS statement:

SHOW COLUMNS FROM EMPLOYEE;

In SQL Server, you can use the sp_help stored procedure:

EXEC sp_help 'EMPLOYEE';

These are just examples, and the actual syntax may vary depending on the database system you are using. It is important to consult the documentation or specific resources for the database system you are working with to determine the appropriate syntax to view the structure or schema of a relation.

To learn more about database  Click Here: brainly.com/question/30163202

#SPJ11

For an ATmega328P with a CPU frequency of 16MHz and Timer/Counter1 prescaler value of 64, the maximum time delay that can be generated by Timer/Counter1 is approximately 0.26214 seconds or 262.14 milliseconds (ms) when rounded to two decimal points.

The maximum time delay that can be generated by Timer/Counter1 is determined by the number of clock cycles required for the timer to overflow, which is the product of the prescaler value and the maximum timer count value.

For the ATmega328P, the maximum timer count value is 65535 (2^16 - 1), since it is a 16-bit timer. The prescaler value is 64, so the total number of clock cycles required for the timer to overflow is:

64 * 65535 = 4194240

To convert this value to time in seconds, we divide by the CPU frequency:

4194240 / 16000000 = 0.26214 seconds

Therefore, the maximum time delay that can be generated by Timer/Counter1 is approximately 0.26214 seconds or 262.14 milliseconds (ms) when rounded to two decimal points.

To know more about CPU frequency, visit:
brainly.com/question/29425786
#SPJ11

The provided MATLAB script computes the polynomial of degree 2 that best fits the given data using the least-squares criterion.

First, the input data is stored in the vectors X and Y. Then, a Vandermonde matrix A is constructed using the powers of X. The coefficients of the polynomial are computed by solving the linear system using the pseudo-inverse (pinv) of A multiplied by Y.

% Input data

X = [0; 0.1; 0.4; 0.6; 0.9; 1];

Y = [4; 4.5; 6.5; 8; 11; 12];

% Construct the Vandermonde matrix

A = [X.^2, X, ones(size(X))];

% Compute the coefficients using the least-squares formula

coefficients = pinv(A) * Y;

% Evaluate the polynomial

Y_approx = A * coefficients;

% Compute the error of the approximation

error = norm(Y - Y_approx);

% Display the coefficients and error

coefficients

error

The polynomial is evaluated by multiplying the Vandermonde matrix A with the obtained coefficients. The error of the approximation is computed using the Euclidean norm (norm) of the difference between the original data Y and the approximated values Y_approx.

Finally, the script displays the coefficients of the polynomial and the computed error.

To learn more about MATLAB visit;

https://brainly.com/question/30763780

#SPJ11

Given that AL contains the hex value C5.The instruction to be executed is ADD AL, BL.If the zero flag has to be set after executing this instruction, then the value of BL should be such that, it will be subtracted from the value of AL such that AL becomes zero and the result of the operation should be stored in AL.

The value for BL which will cause the zero flag to be set when the processor executes the instruction ADD AL, BL is B. 3BH.Here, AL contains the hex value C5. So, when we add BL=3B in AL, then the AL should become zero as:(C5)16 + (3B)16 = 10000102 + 001110112 = 10111112 = 0BF16So, the result is 0BF which is not zero. Now, if we subtract 3BH from it, then we can get the value of BL which can set the zero flag.So, 0BF - 3B = 84Now, if we add 84 in the value of C5, we will get zero as:(C5)16 + (84)16 = 14916 + 13216 = 28116 = 0000 0000 0000 00002Hence, the value for BL which will cause the zero flag to be set when the processor executes the instruction ADD AL, BL is 3BH.

To know more about processor visit:

https://brainly.com/question/30255354

#SPJ11

The Monty Hall problem is a probability puzzle that is based on a game show. Suppose you are a participant in a game show and there are three doors, one of which has a car behind it and the other two have goats behind them. The game show host tells you to pick a door, and you do so. After you have made your selection, the host opens one of the other doors to reveal a goat.

At this point, the host gives you the option of sticking with your original choice or switching to the other unopened door.The largest expected value for winnings will be produced if the player keeps playing and changes windows. So, out of the three options possible (conclude the game and take $2,000, keep on playing but stick with their initial choice, or keep playing but change windows), the player should keep playing but change windows.

We can simulate 5,000 plays of this game by using each strategy in Rstudio as follows:

Step 1: Create a function to simulate the game. Here is the function in R:```rsimulate_game <- function(choice, stay_switch) {windows <- c(5000, "sheep", "sheep") #

Place $5,000 and two sheep behind the windows chosen_by_host <- sample(which(windows != "sheep" & windows != choice), 1)

if (stay_switch == "stay") { player_choice <- choice } else { player_choice <- setdiff(1:3, c(choice, chosen_by_host)) } if (windows[player_choice] == 5000) { return(1) } else { return(0) }}```

This function takes two arguments: `choice` (the player's initial choice of window) and `stay_switch` (whether the player wants to stay with their initial choice or switch to the other unopened window). It returns a 1 if the player wins and a 0 if the player loses. Note that the `sample` function is used to randomly select which window the host will open.\

The `setdiff` function is used to select the unopened window if the player decides to switch.Step 2: Run the simulation for each strategy. Here is the R code to simulate the game 5,000 times for each strategy

:```rset.seed(123) # For reproducibility choices <- sample(1:3, 5000, replace = TRUE) stay_wins <- sapply(choices, simulate_game, stay_switch = "stay") switch_wins <- sapply(choices, simulate_game, stay_switch = "switch")```

This code first sets the seed to ensure that the results are reproducible. It then uses the `sample` function to randomly select the player's initial choice for each of the 5,000 plays. It uses the `sapply` function to run the `simulate_game` function for each play for each strategy (stay or switch).

The results are stored in the `stay_wins` and `switch_wins` vectors, which contain a 1 if the player wins and a 0 if the player loses.Step 3: Calculate the expected value for each strategy.

Here is the R code to calculate the expected value for each strategy:```rexpected_value_stay <- mean(stay_wins * 2000 + (1 - stay_wins) * 0) rexpected_value_switch <- mean(switch_wins * 2000 + (1 - switch_wins) * 0)```

This code uses the `mean` function to calculate the expected value for each strategy. For the "stay" strategy, the expected value is the probability of winning (i.e., the mean of the `stay_wins` vector) multiplied by the prize of $2,000. For the "switch" strategy, the expected value is the probability of winning (i.e., the mean of the `switch_wins` vector) multiplied by the prize of $2,000.

To know more about function visit:

https://brainly.com/question/30858768

#SPJ11

(e) The data field maxDiveDepth of type Loon should not be static. The reason is that making it static would mean that the variable is shared among all instances of Loon.

However, according to the given requirements, the maximum dive depth (maxDiveDepth) is specific to each instance of Loon. Each Loon object should have its own maxDiveDepth value, so it should be an instance variable rather than a static variable.

(f) The version of takeOff() that is called in the code Bird b = new Loon(); b.takeOff(); depends on the type of the actual object being referred to. In this case, b is declared as type Bird, but it refers to a Loon object. Since Java uses dynamic method dispatch, the version of takeOff() that is called will be determined at runtime based on the actual type of the object, not the declared type. Therefore, the takeOff() method of Loon will be called.

(g) There is an error in the code Bird c = new Eagle(); Loon d = (Loon)c;. It will result in a compile-time error. The reason is that Eagle is a subtype of Bird, but it is not a subtype of Loon. Therefore, you cannot directly assign a reference of type Bird to a reference of type Loon. This is known as an incompatible types error, which occurs during compilation when there is an attempt to assign an incompatible reference. To resolve this error, you need to ensure that the reference type matches the object type or use appropriate type casting if it is a valid operation.

Learn more about data here:

https://brainly.com/question/32661494

#SPJ11

The corrected shell script is a basic calculator that performs addition, subtraction, multiplication, and division operations based on command-line arguments.
It checks for the correct number of arguments, handles different operators, and provides the result accordingly.

The provided shell script seems to be incomplete and contains some errors. Here's a corrected version of the script:

```bash

#!/bin/bash

# Calculator

if [ $# != 3 ]; then

   echo "You did not run the program correctly"

   echo "Example: calculator.sh 4 + 5"

   exit 1

fi

# Now do the math

if [ "$2" = "+" ]; then

   ANSWER=$(( $1 + $3 ))

   echo $ANSWER

elif [ "$2" = "-" ]; then

   ANSWER=$(( $1 - $3 ))

   echo $ANSWER

elif [ "$2" = "*" ]; then

   ANSWER=$(( $1 * $3 ))

   echo $ANSWER

elif [ "$2" = "/" ]; then

   ANSWER=$(( $1 / $3 ))

   echo $ANSWER

else

   echo "Invalid operator. Please use one of: +, -, *, /"

   exit 1

fi

exit 0

```

To use this calculator script, you can follow the example provided in the script comments: `calculator.sh 4 + 5`. This will perform the addition operation and output the result.

The script checks if the number of command-line arguments is correct. If not, it displays an error message. Then, based on the operator provided as the second argument, it performs the corresponding mathematical operation using the first and third arguments.

The script includes support for addition (+), subtraction (-), multiplication (*), and division (/). If an invalid operator is provided, an error message is displayed. Finally, the script exits with a status code of 0 (success) or 1 (error).

To use the script, save it with a `.sh` extension (e.g., `calculator.sh`), make it executable (`chmod +x calculator.sh`), and place it in a directory included in your system's PATH. You can create a `bin` directory in your home directory and add it to the PATH by adding `export PATH="$HOME/bin:$PATH"` to your shell configuration file (e.g., `~/.bashrc`).

To learn more about shell script click here: brainly.com/question/9978993

#SPJ11

The percentage of DVDs sold can be calculated by dividing the number of DVDs sold by the total number of DVDs, and then multiplying the result by 100.

In this case, we have 210 DVDs in total and 88 of them were sold.
To calculate the percentage of DVDs sold, we can follow these steps:

1. Divide the number of DVDs sold (88) by the total number of DVDs (210):
88 / 210 = 0.419

2. Multiply the result by 100 to convert it to a percentage:
  0.419 * 100 = 41.9%

Therefore, the percentage of DVDs sold is approximately 41.9%.
To summarize, out of the total 210 DVDs, 88 were sold, which is approximately 41.9% of the total.

To know more about percentage visit:

https://brainly.com/question/32197511

#SPJ11

The fundamental storage unit is a bit that can be in an OFF or ON state. There are 2⁵ (or 32) different codes that are possible with 5 bits.Bits are the smallest unit of computer data.

A bit is a binary digit that can hold one of two states, 0 or 1. Every piece of data in a computer is made up of bits. A byte, for example, is made up of eight bits (and can therefore hold 2⁸ or 256, different values).The possible number of codes with 5 bits can be determined by raising 2 to the power of the number of bits. We can use the formula 2ⁿ, where n is the number of bits in the code.In this case, we have 5 bits, so we get 2⁵=32.Therefore, the answer is option c. 2⁵.

To know more about bit visit:

https://brainly.com/question/31991040

#SPJ11

To create a perfect binary tree with values (5, 7, 9, 11, 13, 15, 17), insert them in the order: 9, 7, 5, 11, 15, 13, 17. The resulting tree is balanced with equal height on both sides.

To create a perfect binary tree with the given values (5, 7, 9, 11, 13, 15, 17) in an initially empty Binary Search Tree (BST), you can follow the order of insertion as follows:

1. Insert 9 as the root node (the middle value).

2. Insert 7 as the left child of the root.

3. Insert 5 as the left child of the node with value 7.

4. Insert 11 as the right child of the root.

5. Insert 15 as the right child of the node with value 11.

6. Insert 13 as the left child of the node with value 15.

7. Insert 17 as the right child of the node with value 15.

The resulting perfect binary tree would look like this:

```

     9

   /   \

  7     11

 /     /  \

5     15   -

      / \

     13  17

```

By following this order of insertion, the binary tree will have equal height on both sides, with each parent having exactly two children (except for leaf nodes).

learn more about Binary Search Tree (BST) here: brainly.com/question/30391092

#SPJ11

Number of edges  = 136.

a. To insert items with the given key values into an empty hash table using open hashing, we follow these steps:

Initialize an empty hash table with the specified table size.

Calculate the hash value for each key by taking the modulo of the key value with the table size.

For each key, insert the corresponding item into the hash table at the calculated hash value. If there is a collision, handle it using open hashing (chaining) by creating a linked list at that hash value and adding the item to the list.

Repeat the above step for all the keys.

Let's consider the ID: 201710349 and the key values: 201, 710, 349 with a table size of 2. We perform the following steps:

Create an empty hash table with a size of 2.

Calculate the hash value for each key: hash(201) = 201 % 2 = 1, hash(710) = 710 % 2 = 0, hash(349) = 349 % 2 = 1.

Insert the items into the hash table:

Insert key 201 at index 1.

Insert key 710 at index 0.

Insert key 349 at index 1 (collision handled using chaining).

The final hash table with the inserted items would look like:

Index 0: 710

Index 1: 201 -> 349

b. To calculate the number of edges in a complete undirected graph with N vertices, we use the formula: (N * (N - 1)) / 2.

Let's consider the ID: 201710340, and the N value is 17. We calculate the number of edges as follows:

c. Since the adjacency matrix representation is not provided in the question, it is not possible to draw the graph or the adjacency list based on the given information. Please provide the adjacency matrix representation for further assistance in drawing the graph and adjacency list.

Know more about hash table here:

https://brainly.com/question/13097982

#SPJ11

a)The execution time for one instruction (the total time needed to execute one instruction). Execution Time = 6.25 ns

B) Throughput ≈ 320 million instructions per second (MIPS)

C) Total Execution Time ≈ 63.75 μs

a. The execution time for one instruction can be calculated as the sum of the time required for each stage in the pipeline, including any stalls due to dependencies or nches. Given that the pipeline needs to stall 1 clock cycle for every 4 instructions executed, we can assume an average of 2.5 stalls per instruction. Therefore, the total execution time for one instruction is:

Execution Time = (10 stages + 2.5 stalls) x 0.5 ns per clock cycle

Execution Time = 6.25 ns

b. The maximum throughput for the pipeline can be calculated using the formula:

Throughput = Clock Frequency / Execution Time

Assuming a clock period of 0.5 ns, the clock frequency is 1 / 0.5 ns = 2 GHz. Therefore, the maximum throughput for the pipeline is:

Throughput = 2 GHz / 6.25 ns per instruction

Throughput ≈ 320 million instructions per second (MIPS)

c. The time required to execute the entire program can be calculated by multiplying the number of instructions by the execution time per instruction and adding any additional pipeline stalls due to dependencies or nches.

Total Execution Time = Number of Instructions x Execution Time + Pipeline Stalls

Given that there are 10,000 instructions in the program and an average of 2.5 stalls per instruction, the total execution time is:

Total Execution Time = 10,000 x 6.25 ns + 10,000 x 0.5 ns / 4

Total Execution Time = 62.5 μs + 1.25 μs

Total Execution Time ≈ 63.75 μs

Learn more about Execution Time here:

https://brainly.com/question/32242141

#SPJ11

Question 16: The recurrence T(n) = 2T(n/4) + Ig(n) = (n²) cannot be resolved using the Master Theorem. The Master Theorem is applicable to recurrence relations of the form T(n) = aT(n/b) + f(n), where a ≥ 1, b > 1, and f(n) is an asymptotically positive function.

In this case, we have a constant term Ig(n), which does not fit the form required by the Master Theorem. Therefore, we cannot determine the time complexity of this recurrence using the Master Theorem alone.

Question 17: The recurrence T(n) = 8T(n/2) + n = (n³) can be resolved using the Master Theorem's case 1. In this case, we have a = 8, b = 2, and f(n) = n. The recurrence relation falls under case 1 of the Master Theorem because f(n) = n is polynomially larger than n^(log_b(a)) = n². Therefore, the time complexity of this recurrence is O(n³).

Question 18: The recurrence T(n) = 8T(√n) + n = (√) cannot be resolved using the Master Theorem. The Master Theorem is applicable to recurrences with a fixed value of b, but in this case, the value of b is not fixed as it depends on the square root of n. Therefore, the Master Theorem cannot be directly applied to determine the time complexity of this recurrence.

Question 19: The recurrence T(n) = 2T(n/2) + 10n = (n log n) can be resolved using the Master Theorem's case 2. In this case, we have a = 2, b = 2, and f(n) = 10n. The recurrence relation falls under case 2 of the Master Theorem because f(n) = 10n is equal to n^(log_b(a)) = n¹. Therefore, the time complexity of this recurrence is O(n log n).

Question 20: The recurrence T(n) = 2T(n/2) + n² = (n²) can be resolved using the Master Theorem's case 2. In this case, we have a = 2, b = 2, and f(n) = n². The recurrence relation falls under case 2 of the Master Theorem because f(n) = n² is equal to n^(log_b(a)) = n¹. Therefore, the time complexity of this recurrence is O(n²).

Learn more about Master Theorem here:

https://brainly.com/question/31682739

#SPJ11

When designing a database for a social media startup, there are various types of information that need to be stored to fulfill the requirements. Some of the key information to consider includes user profiles, posts, comments, likes, connections, and analytics data.

Designing a database for a social media startup involves capturing and storing various types of information to meet the platform's requirements. User profiles, posts, comments, likes, connections, and analytics data are fundamental components that enable user interactions, personalization, and platform insights. The database design should consider the scalability, performance, and security aspects to ensure efficient data management and a seamless user experience.

Learn more about database design visit:

https://brainly.com/question/13266923

#SPJ11

The length of the given array represented in the image is 8, and the largest valid index number is 7. To determine the number of characters in a string, the string function "size()" and "length()" should be used.

Based on the provided information, the array represented in the image contains 8 elements, and the largest valid index number is 7. This means that the array indices range from 0 to 7, resulting in a total of 8 elements.

To determine the number of characters in a string, the string functions "size()" and "length()" can be used. Both functions provide the same result and return the number of characters in a string. These functions count the individual characters in the string, regardless of the encoding.

Regarding the given code snippet, the line 3 `myStr = string(1, myChar);` creates a string of length 1 stored in `myStr`, with the character `myChar` as its only element. This line initializes or replaces the contents of `myStr` with a new string consisting of the single character specified by `myChar`.

know more about array :brainly.com/question/13261246

#SPJ11

We can represent the town as a graph and apply the concept of maximum flow. By constructing a graph that represents blocks and intersections, we can find a solution using maximum-flow algorithms.

To represent the town as a graph, we can consider each block as a node and each intersection as an edge connecting the nodes. The professor's house and the school would be two distinct nodes on the graph. Additionally, we would add a source node and a sink node.To model the children's preferences, we assign capacities to the edges. If one child has stepped on a block, we set the capacity of the corresponding edge to zero, indicating that it cannot be used by the other child. The edges representing corners would have infinite capacities, allowing the paths of the children to cross without any restriction.

The objective is to find a maximum flow from the source node (representing the children's starting point) to the sink node (representing the school). If a feasible flow exists, it means that there is a way for both children to reach the school without stepping on the same block. However, if the maximum flow is less than the total capacity of the edges leaving the source node, it indicates that it is not possible for both children to attend the same school without crossing each other's paths.

By applying a maximum-flow algorithm, such as the Ford-Fulkerson algorithm or the Edmonds-Karp algorithm, we can determine whether there exists a feasible solution for the children to attend the same school.

To learn more about maximum-flow algorithms click here : brainly.com/question/16006590

#SPJ11

The sequence alignment problem is a classic problem in bioinformatics that involves finding the optimal way to align two sequences of nucleotides or amino acids

. The subproblems for the sequence alignment problem can be described as follows:

Base case: If either sequence is empty, the alignment score is 0.

Match/Mismatch case: Align the last characters of both sequences and add the score of the match or mismatch to the optimal score of the remaining part of the sequences.

Insertion/Deletion case: Add a gap in one of the sequences, and recursively find the best alignment score of the remaining parts of the sequences.

Combine case: Consider all possible combinations of the above cases and choose the one with the highest score.

By considering these subproblems, an optimal solution can be found for the sequence alignment problem. However, the complexity of the problem grows exponentially with the length of the sequences, which makes it computationally expensive for long sequences.

Learn more about  sequence alignment here:

https://brainly.com/question/32008302

#SPJ11

The Vector Channel Index section of the OSSTMM test report should include information such as exploits used against target hosts and

This section provides a detailed analysis of the methods that were used to attack the system, including the tools and techniques deployed by attackers to exploit vulnerabilities in the system. This information is essential for understanding the scope of the attack and identifying potential weaknesses that need to be addressed to enhance system security.

To reduce the risk of password hassles being compromised, administrators can take various measures, including maintaining a password history to ensure passwords aren't re-used, enforcing password complexity, purging log files regularly, and forcing password changes at regular intervals. These measures help to prevent attackers from gaining access to sensitive information, which could lead to data breaches or other malicious activities.

HIPAA is a regulatory law that requires companies that maintain electronically identifiable medical information to take steps to secure their data infrastructure. This law sets out specific standards for safeguarding protected health information (PHI) and requires healthcare organizations to implement appropriate administrative, physical, and technical safeguards to ensure the confidentiality, integrity, and availability of PHI.

Compliance with HIPAA regulations is critical for protecting patient privacy and preventing unauthorized access to sensitive health information. Failure to comply with HIPAA requirements can result in significant fines and reputational damage for an organization.

Learn more about OSSTMM test here:

https://brainly.com/question/31567408

#SPJ11