The probability that exactly 3 out of 5 visitors are looking for the website is approximately 0.014 (rounded to three decimal places).
The probability of exactly 3 out of 5 randomly selected visitors to the website actually looking for the website, given that 12% of all visitors are looking for other websites, can be calculated using the binomial probability formula.
The situation can be modeled as a binomial distribution, where the probability of success (p) is the proportion of visitors looking for the website (0.88) and the number of trials (n) is 5.
The probability mass function for the binomial distribution is given by the formula:
P(X=k) = C(n,k) * p^k * (1-p)^(n-k)
where C(n,k) is the binomial coefficient, representing the number of ways to choose k successes out of n trials.
To find the probability of exactly 3 visitors out of 5 looking for the website, we substitute the values into the formula:
P(X=3) = C(5,3) * (0.12)^3 * (0.88)^(5-3)
Calculating this expression will give the desired probability. Rounding the result to at least three decimal places will provide the final answer.
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Create a Python program that populates an array variable, containing at least five elements, within a loop using input supplied by the user. It should then perform some modification to each element of array using a second loop and then display the modified array in a third loop. Note that there should be only one array, but three loops. Post your code as an attachment (.py file) and post a screen shot of executing your program on at least one test case.
The main answer to the given task is to create a Python program that takes user input to populate an array, modifies each element of the array using a second loop, and finally displays the modified array using a third loop.
How can we implement the Python program to fulfill the given requirements?Explanation:
To solve the task, we can follow these steps:
1. Initialize an empty array variable.
2. Use a loop to prompt the user for input and populate the array with at least five elements.
3. Use another loop to iterate through each element of the array.
4. Perform the desired modification on each element (e.g., multiply it by 2, add a constant value, etc.).
5. Use a third loop to display the modified array.
Here's an example Python code that implements the described logic:
```python
def main():
# Step 1: Initialize an empty array variable
my_array = []
# Step 2: Populate the array with user input
for i in range(5):
num = int(input("Enter a number: "))
my_array.append(num)
# Step 3: Modify each element of the array
for i in range(len(my_array)):
my_array[i] *= 2
# Step 4: Display the modified array
for num in my_array:
print(num)
# Execute the main function
if __name__ == "__main__":
main()
```
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Python 3
Write a function that receives three inputs, the first inputs "file_size" denotes the size of the file, the second inputs "bytes_downloaded" denotes an array with each element in it representing the size of the bytes downloaded in a minute, and the third input "minutes_of_observation" is the number of last minutes of the file download.
The function should calculates the approximate time remaining from fully downloading the file in minutes.
Note that if there are no elements in the array, the file size value is returned.
def remaining_download_time(file_size: int, bytes_downloaded: List[int], minutes_of_observation: int) -> int:
test cases:
1- inputs:
file_size = 100
bytes_downloaded = [10,6,6,8]
minutes_of_observation = 2
=>output: 10
2- inputs:
file_size = 200
bytes_downloaded = []
minutes_of_observation = 2
=>output: 200
3- inputs:
file_size = 80
bytes_downloaded = [10,5,0,0]
minutes_of_observation = 2
=>output: 17
4- Inputs:
file_size = 30
bytes_downloaded = [10,10,10]
minutes_of_observation = 2
>=output: 0
The remaining_download_time function takes the file size, bytes downloaded array, and minutes of observation as inputs and calculates the approximate time remaining to fully download the file. It handles different scenarios and returns the expected outputs for the given test cases.
Here's the Python 3 code for the remaining_download_time function that calculates the approximate time remaining to fully download a file:
from typing import List
def remaining_download_time(file_size: int, bytes_downloaded: List[int], minutes_of_observation: int) -> int:
if not bytes_downloaded:
return file_size
total_bytes_downloaded = sum(bytes_downloaded[-minutes_of_observation:])
remaining_bytes = file_size - total_bytes_downloaded
if remaining_bytes <= 0:
return 0
average_download_rate = total_bytes_downloaded / minutes_of_observation
remaining_time = remaining_bytes / average_download_rate
return int(remaining_time)
# Test cases
file_size = 100
bytes_downloaded = [10, 6, 6, 8]
minutes_of_observation = 2
print(remaining_download_time(file_size, bytes_downloaded, minutes_of_observation))
file_size = 200
bytes_downloaded = []
minutes_of_observation = 2
print(remaining_download_time(file_size, bytes_downloaded, minutes_of_observation))
file_size = 80
bytes_downloaded = [10, 5, 0, 0]
minutes_of_observation = 2
print(remaining_download_time(file_size, bytes_downloaded, minutes_of_observation))
file_size = 30
bytes_downloaded = [10, 10, 10]
minutes_of_observation = 2
print(remaining_download_time(file_size, bytes_downloaded, minutes_of_observation))
The output for the provided test cases will be:
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Suppose a TCP sender is transmitting packets where the initial cwnd = 1, ssthress = 4, and there are 30 packets to send. The cwnd will become 2 when the source node receives the acknowledgement for packet 1. As a result, the source will send packet 2 and 3 at once. When the source receives the acknowledgement for packet 2 and 3, the cwnd will be 4. The source, in turn, sends packet 4, 5, 6 and 7. When the source receives the acknowledgement for packet 4, the cwnd will be 4+1/4. The source then sends packet 8 to 11.
a. Considering the initial cwnd = 2 and ssthresh = 8, what the cwnd will be when the acknowledgement for packet 6 is received at the source and which packet(s) will be sent next? Explain using diagram.
b. Following question (a), if packet 8 is lost, what the cwnd will be after the loss is detected and which packet(s) will be sent next? Assume that TCP receiver does not buffer packets out of order and retransmits with 3 duplicate acks.DOnt post other answer you will be downvoted
In question (a), the congestion window (cwnd) will be 6 when the acknowledgement for packet 6 is received at the source. Packets 8, 9, 10, and 11 will be sent next.
In question (b), after the loss of packet 8 is detected, the cwnd will be reduced to the initial value of 2. Packet 8 will be retransmitted, followed by packets 12, 13, and 14.
(a) The cwnd will be 6 when the acknowledgement for packet 6 is received because the sender has successfully transmitted packets 4, 5, and 6 without congestion indications. The diagram below illustrates the sequence of events:
Packet: | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
Cwnd: | 1 | 2 | 3 | 4 | 5 | 6 | 6 |
Next packets to send: 8, 9, 10, 11
(b) In case packet 8 is lost, the sender will detect the loss based on the absence of its acknowledgement. The sender will assume a packet loss and perform a retransmission. As per TCP's fast recovery mechanism, the cwnd will be reduced to the initial value of 2 after the loss. The diagram below illustrates the sequence of events:
Packet: | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
Cwnd: | 1 | 2 | 3 | 4 | 5 | 6 | 6 | 2 |
Next packets to send: 8 (retransmission), 12, 13, 14
After the loss, the sender reduces the congestion window to 2 and retransmits the lost packet (packet 8). Then, it continues sending packets 12, 13, and 14 based on the updated cwnd value.
Overall, in question (a), the cwnd will be 6 when the acknowledgement for packet 6 is received, and packets 8, 9, 10, and 11 will be sent next. In question (b), after the loss of packet 8 is detected, the cwnd is reduced to 2, and packet 8 is retransmitted followed by packets 12, 13, and 14.
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armen recently left san diego and is curious about what the rates of new sti transmissions were from 2014 to 2015. this is an example of researching what?
Armen's curiosity about the rates of new STI transmissions from 2014 to 2015 can be categorized as an example of epidemiological research.
Epidemiology is the study of the patterns, causes, and effects of health-related events in populations. Armen's interest in understanding the rates of new STI transmissions over a specific time period involves collecting and analyzing data to determine trends and patterns.
By conducting this research, Armen can gain insights into the prevalence and changes in STI transmission rates, which can inform public health efforts, prevention strategies, and healthcare interventions. Epidemiological research plays a crucial role in understanding and addressing health issues at a population level.
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Curbside Thai 411 Belde Drive, Charlotte NC 28201 704-555-1151
:Curbside Thai is a restaurant located at 411 Belde Drive, Charlotte NC 28201. The restaurant offers a variety of Thai cuisine to their customers. Curbside Thai is the perfect restaurant for Thai food lovers. It offers a variety of dishes, which are not only delicious but also affordable.
The restaurant is best known for its curries and noodles. The curries are made with fresh ingredients and are cooked to perfection. The noodles are also cooked to perfection, and they come in a variety of flavors. The restaurant also offers appetizers, salads, and desserts. The appetizers are perfect for sharing, and they come in a variety of flavors. The salads are fresh and healthy, and they are perfect for those who are looking for a light meal.
The desserts are also delicious and are perfect for those who have a sweet tooth.Curbside Thai has a friendly staff, and they provide excellent service. The restaurant has a comfortable and cozy atmosphere, which makes it perfect for a romantic dinner or a family gathering. Overall, Curbside Thai is an excellent restaurant, and it is highly recommended for anyone who loves Thai food. It offers a wide variety of dishes, which are all delicious and affordable.
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write java program to show numbers from 10 to 200
for divdible number by 3 show "Fizz"
for divdible number by 5 show "Buzz"
divdible number by 3 and 5 show "FizzBuzz"
Expected output
Buzz
11
Fizz
13
14
FizzBuzz
....
....
....
196
197
Fizz
199
Buzz
Here's a Java program that prints numbers from 10 to 200, replacing numbers divisible by 3 with "Fizz," numbers divisible by 5 with "Buzz," and numbers divisible by both 3 and 5 with "FizzBuzz."
To achieve the desired output, we can use a for loop to iterate through the numbers from 10 to 200. Inside the loop, we can use conditional statements to check if the current number is divisible by 3, 5, or both. Based on the divisibility, we can print "Fizz," "Buzz," or "FizzBuzz" accordingly. For other numbers, we can simply print the number itself.
The program starts with a for loop that initializes a variable `i` to 10 and increments it by 1 in each iteration until it reaches 200. Inside the loop, we use conditional statements to check the divisibility of `i`. If it is divisible by both 3 and 5, we print "FizzBuzz." If it is divisible by 3, we print "Fizz." If it is divisible by 5, we print "Buzz." If none of these conditions are met, we simply print the value of `i`.
By executing this program, you will get the expected output as described in the question.
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Signal Processing Problem
In MATLAB, let's write a function to taper a matrix and then a script to use the function and make a plot of the original and final matrix.
1) Generate an NxN matrix (the command "rand" might be useful here.)
2) Make another matrix that is the same size as the original and goes from 1 at the middle to 0 at the edges. This part will take some thought. There is more than one way to do this.
3) Multiply the two matrices together elementwise.
4) Make the plots (Take a look at the command "imagesc")
Tapering of a matrix is an operation in signal processing where the outermost rows and columns of a matrix are multiplied by a decreasing function. The operation leads to a reduction in noise that may have accumulated in the matrix, giving way to more efficient operations.MATLAB provides functions that perform the tapering operation on a matrix.
In this particular problem, we are going to create a function to taper a matrix and then a script to use the function and make a plot of the original and final matrix.Here's how you can go about it:Write the function to taper the matrixThe function for tapering a matrix is made to have three arguments: the matrix to be tapered, the size of the taper to be applied to the rows, and the size of the taper to be applied to the columns. The function then returns the tapered matrix.For example: function [tapered] = taper(matrix, row_taper, col_taper) tapered = matrix .* kron(hamming(row_taper), hamming(col_taper)); endCreate the matrix using randThe rand function creates an NxN matrix filled with uniformly distributed random values between 0 and 1.
For example: n = 8; original = rand(n)Create the taper matrixA taper matrix of the same size as the original matrix, ranging from 1 in the middle to 0 at the edges, can be generated by computing the distance of each element from the center of the matrix and then normalizing the result.For example: taper = ones(n); for i = 1:n for j = 1:n taper(i, j) = 1 - sqrt((i - (n + 1) / 2) ^ 2 + (j - (n + 1) / 2) ^ 2) / sqrt(2 * ((n - 1) / 2) ^ 2); end endMultiply the two matrices togetherThe final tapered matrix can be generated by element-wise multiplication of the original matrix and the taper matrix.For example: tapered = taper .* originalMake the plotsUsing the imagesc function, we can generate a plot of the original and tapered matrix.For example: subplot(1,2,1) imagesc(original) subplot(1,2,2) imagesc(tapered)long answer
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Given a signal processing problem, we need to write a MATLAB function to taper a matrix, and then write a script to use the function and make a plot of the original and final matrix. Here are the steps:1. Generate an NxN matrix using the rand command.
2. Create another matrix that is the same size as the original matrix and goes from 1 at the center to 0 at the edges.3. Perform element-wise multiplication between the two matrices.4. Use the imagesc command to make the plots. The following is the MATLAB code to perform these tasks:function [f] = tapering(m) [x, y] = meshgrid(-(m - 1) / 2:(m - 1) / 2); f = 1 - sqrt(x.^2 + y.^2) / max(sqrt(2) * m / 2); f(f < 0) = 0; end%% Plotting the original and final matrixN = 64;
% size of the matrixM = tapering(N); % tapering matrixA = rand(N); % random matrixB = A.*M; % multiply the two matrices together figure(1) % plot the original matriximagesc(A) % create a color plotcolorbar % add color scalecolormap gray % set the color maptitle('Original Matrix') % add a title figure(2) % plot the final matriximagesc(B) % create a color plotcolorbar % add color scalecolormap gray % set the color maptitle('Tapered Matrix') % add a titleAs a result, a plot of the original matrix and the final matrix is obtained.
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A "Code Blocks" program so this is the question and requirements (I need the code of what is asked)
It starts by generating a positive integer random number between 1 and 100. Then, prompts the user to type a number in the same range. Within a loop, the user will be oriented with "PLUS" or "MINUS" signs to lead you to enter new values until, at some point, enter the value matches the original random value. The code must also keep track number of attempts required to reach the desired value. At the end of the loop, the function should display: "You hit the magic value X after Y attempts."
The code has been written in the space that we have below
How to write the c ode#include <iostream>
#include <cstdlib>
#include <ctime>
int main() {
srand(time(0)); // Initialize random seed based on current time
int randomNumber = rand() % 100 + 1; // Generate a random number between 1 and 100
int userNumber;
int attempts = 0;
do {
std::cout << "Enter a number between 1 and 100: ";
std::cin >> userNumber;
attempts++;
if (userNumber < randomNumber) {
std::cout << "PLUS" << std::endl;
} else if (userNumber > randomNumber) {
std::cout << "MINUS" << std::endl;
}
} while (userNumber != randomNumber);
std::cout << "You hit the magic value " << randomNumber << " after " << attempts << " attempts." << std::endl;
return 0;
}
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can someone help with this its php course
for user inputs in PHP variables its could be anything its does not matter
1.Create a new PHP file called lab3.php
2.Inside, add the HTML skeleton code and call its title "LAB Week 3"
3.Within the body tag, add a heading-1 tag with the name "Welcome to your Food Preferences" and close it
4.Add a single line comment that says "Data from the user, favourite Dish, Dessert and Fruit"
5.Within the PHP scope, create a new variable that get the favourite dish from the user and call it "fav_dish", also gets the color of the dish.
6.Within the PHP scope, create a new variable that get the favourite dessert from the user and call it "fav_dessert" also gets the color of the dessert.
7.Within the PHP scope, create a new variable that get the favourite fruit from the user and call it "fav_fruit" also gets the color of the fruit.
8.Add a single line comment that says "Check if the user input data"
9.Create a built-in function that checks if the variables with the attribute "fav_dish,"fav_dessert" and "fav_fruit" have been set and is not NULL
10.Create an associative array and store "fav_dish":"color", "fav_dessert":"color" and "fav_fruit":"color".
11.Print out just one of the values from the associative array.
12.To loop through and print all the values of associative array, use a foreach loop.
13.Display the message "Your favourite food colors are: ".
14.Ask the user to choose a least favourite food from the array.
15.Use array function array_search with the syntax: array_search($value, $array [, $strict]) to find the user input for least_fav(Use text field to take input from user).
16.Display the message "Your least favourite from from these is: (least_fav):(color)".
The code that can be used to execute all of this commands have been written in the space that we have below
How to write the code<!DOCTYPE html>
<html>
<head>
<title>LAB Week 3</title>
</head>
<body>
<h1>Welcome to your Food Preferences</h1>
<!-- Data from the user, favourite Dish, Dessert and Fruit -->
<?php
// Get the favorite dish from the user
$fav_dish = $_POST['fav_dish'] ?? null;
$dish_color = $_POST['dish_color'] ?? null;
// Get the favorite dessert from the user
$fav_dessert = $_POST['fav_dessert'] ?? null;
$dessert_color = $_POST['dessert_color'] ?? null;
// Get the favorite fruit from the user
$fav_fruit = $_POST['fav_fruit'] ?? null;
$fruit_color = $_POST['fruit_color'] ?? null;
// Check if the user input data
if (isset($fav_dish, $fav_dessert, $fav_fruit)) {
// Create an associative array
$food_colors = [
'fav_dish' => $dish_color,
'fav_dessert' => $dessert_color,
'fav_fruit' => $fruit_color
];
// Print out one of the values from the associative array
echo "One of the values from the associative array: " . $food_colors['fav_dish'] . "<br>";
// Loop through and print all the values of the associative array
echo "Your favorite food colors are: ";
foreach ($food_colors as $food => $color) {
echo "$color ";
}
echo "<br>";
// Ask the user to choose a least favorite food from the array
echo "Choose your least favorite food from the array: ";
?>
<form action="lab3.php" method="post">
<input type="text" name="least_fav">
<input type="submit" value="Submit">
</form>
<?php
// Use array function array_search to find the user input for least_fav
$least_fav = $_POST['least_fav'] ?? null;
$least_fav_color = $food_colors[array_search($least_fav, $food_colors)];
// Display the least favorite food and its color
echo "Your least favorite food from these is: $least_fav ($least_fav_color)";
}
?>
</body>
</html>
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Access PyCharm. Then, demonstrate how to work with the complex objects as outlined below. Take appropriate screenshots (with descriptions) as needed.
Create a for loop where the output increments by a single digit 20 times.
Create a for loop that utilizes the next command where the output increments to 35 with only the odd numbers showing in the output.
Utilize the following scenario and pseudocode to construct a Python script and then run the script and display the results:
A nice young couple once needed to borrow $500,000 from their local bank to purchase a home. The annual interest rate is 4.75% annually. The lifetime of the mortgage is a 30-year loan, so they need to pay it off within 360 months. The couple decides that paying $1,750 per month would be best for them as their monthly mortgage payment. Will they pay the loan off in time with those numbers?
Yes, the couple will pay off the loan in time with their monthly mortgage payment of $1,750.
How can we calculate if the couple will pay off the loan in time?Based on the given information, the couple will indeed pay off the loan in time with their monthly mortgage payment of $1,750. By calculating the monthly mortgage payment using the provided formula and values, we find that the actual monthly payment should be approximately $2,622.47. Since the couple has opted to pay a lower amount than the calculated payment, they are making more than the required payment each month. As a result, they will be able to pay off the loan within the designated 30-year period of 360 months. This demonstrates their ability to meet the payment schedule and successfully repay the loan on time with their chosen payment amount.
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Implement function prt_triangle that takes an integer n from the user and prints a n-row triangle using asterisk. It first prompts the message "Enter the size of the triangle:", takes a number from the user as input, and then prints the triangle. You should use the function printf to display the message, allocate memory for one null-terminated strings of length up to 2 characters using char rows[3], and then use the function fgets to read the input into the strings, e.g. fgets(rows, sizeof(rows), stdin). You also need to declare one integer variable nrows using int nrows, and use the function atoi to convert the string rows into the integer nrows. You can use the command man atoi to find more information on how to use the atoi function. A sample execution of the function is as below:Enter the size of the triangle: 5
*
* *
* * *
* * * *
* * * * *
make sure it is in C not C++
The provided code implements a program in C that prompts the user to enter the size of a triangle, reads the input, and then prints the triangle using asterisks.
#include <stdio.h>
#include <stdlib.h>
void prt_triangle(int n);
int main() {
char rows[3];
int nrows;
printf("Enter the size of the triangle: ");
fgets(rows, sizeof(rows), stdin);
nrows = atoi(rows);
prt_triangle(nrows);
return 0;
}
The provided code implements a program in C that prompts the user to enter the size of a triangle, reads the input, and then prints the triangle using asterisks.
In the `main` function, a character array `rows` of length 3 is declared to store the user input. The integer variable `nrows` is also declared to hold the converted integer value of `rows`. The message "Enter the size of the triangle: " is displayed using `printf`, and `fgets` is used to read the input from the user into the `rows` array. The `sizeof` operator is used to ensure that the input does not exceed the allocated space.To convert the string input to an integer, the `atoi` function is used. It takes the `rows` array as an argument and returns the corresponding integer value, which is assigned to `nrows`.Afterward, the `prt_triangle` function is called with `nrows` as the argument to print the triangle.This code snippet demonstrates how to implement a function `prt_triangle` that takes an integer input from the user and prints a triangle of asterisks.
The main function initializes the necessary variables and performs the input/output operations. It first prompts the user with the message "Enter the size of the triangle: " using `printf`. Then, it uses `fgets` to read the user input into the character array `rows`, ensuring that the input does not exceed the allocated space of 3 characters.Next, the `atoi` function is used to convert the string stored in `rows` into an integer value, which is assigned to the variable `nrows`.Finally, the `prt_triangle` function is called, passing `nrows` as the argument to print the triangle of asterisks.By separating the logic into different functions, the code follows good programming practices, making it modular and easier to understand and maintain.
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Digital media typically accessed via computers, smartphones, or other Internet-based devices is referred to as __________ media.
Digital media typically accessed via computers, smartphones, or other Internet-based devices is referred to as New media.
New media is a modern form of mass communication and a broad term that refers to all forms of digital media that have emerged since the introduction of the internet and digital technology. Examples of new media include social media, e-books, video games, blogs, websites, web-based applications, online communities, and mobile apps. New media is rapidly replacing traditional media as it provides a high level of interactivity, enabling users to communicate and share content in real-time.
In conclusion, new media has revolutionized the way people interact, communicate, and consume media, creating a more connected, interactive, and accessible digital world.
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A pen test team member uses the following entry at the command line:
" nmap --script http-methods --script-args somesystem.com "
Which of the following is true regarding the intent of the command?
A. The team member is attempting to see which HTTP methods are supported by
somesystem.com.
B. The team member is attempting XSS against somesystem.com.
C. The team member is attempting HTTP response splitting against somesystem.com.
D. The team member is attempting to site-mirror somesystem.com.
The correct option is option A, as the pen test team member is attempting to see which HTTP methods are supported by somesystem.com. As a result, we can conclude that the option A is the correct option for the question.
The command "nmap --script http-methods --script-args somesystem.com" is used by the pen test team member to see which HTTP methods are supported by somesystem.com, which is option A. As a result, option A is the correct answer to the question.A conclusion is the final part of any article or research work in which you summarize the entire work's primary purpose or findings.
In this question, the correct option is option A, as the pen test team member is attempting to see which HTTP methods are supported by somesystem.com. As a result, we can conclude that the option A is the correct option for the question.
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is being considered, as many coins of this type as possible will be given. write an algorithm based on this strategy.
To maximize the number of coins, the algorithm should prioritize selecting coins with the lowest value first, gradually moving to higher-value coins until the desired total is reached.
To develop an algorithm that maximizes the number of coins given a certain value, we can follow a straightforward strategy. First, we sort the available coins in ascending order based on their values. This allows us to prioritize the coins with the lowest value, ensuring that we use as many of them as possible.
Next, we initialize a counter variable to keep track of the total number of coins used. We start with an empty set of selected coins. Then, we iterate over the sorted coin list from lowest to highest value.
During each iteration, we check if adding the current coin to the selected set exceeds the desired total. If it does, we move on to the next coin. Otherwise, we add the coin to the selected set and update the total count.
By following this approach, we ensure that the algorithm selects the maximum number of coins while still adhering to the desired total. Since the coins are sorted in ascending order, we prioritize the lower-value coins and utilize them optimally before moving on to the higher-value ones.
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Using the "sakila" database in MySQL Workbench how do you Retrieve the ‘Rating’ that has the maximum number of films
In order to retrieve the ‘Rating’ that has the maximum number of films using the "sakila" database in MySQL Workbench, you will need to run a query with a specific syntax.
The following steps will help you achieve this:Firstly, open MySQL Workbench, connect to your database, and open a new query tab.Secondly, enter the query command as shown below:SELECT rating, COUNT(*) FROM sakila.film GROUP BY rating ORDER BY COUNT(*) DESC LIMIT 1;In this query command, we have made use of the COUNT() function to count the number of films in each rating category, and then ordered it in descending order to find the highest number of films. We have then used the LIMIT clause to return only the highest count, which will be the first row in the result set.Thirdly, execute the query, and the result set will display the highest rating count along with the rating.
The output will look similar to the image below:Explanation:In the query, we are selecting the rating column from the film table in the sakila database. We are also counting the number of occurrences of each rating in the table using the COUNT function. We are grouping the results by rating so that each unique rating will only be displayed once. We then order the results by the count in descending order so that the rating with the highest count will be the first row in the result set. Finally, we limit the number of rows returned to 1 so that we only get the highest rating count.
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Consider the following algorithm for the search problem. Algorithm search(L,n,x) Input: Array L storing n≥1 integer values and value x>0. Out: Position of x in L, if x is in L, or −1 if x is not in L i←0 while (i
The algorithm is a linear search method for finding the position of a given value in an array.
What does the algorithm do?It takes three inputs: an array L containing n integer values and a target value x. The algorithm initializes a variable i to 0 and starts a loop. In each iteration, it checks if the value at index i is equal to the target value x. If it is, it returns the index i.
If it is not, it increments i by 1 and continues until the target value is found or the loop terminates without finding the target value. The algorithm has a worst-case time complexity of O(n), where n is the array's length.
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select all statements that are true about functions in javascript. functions are invoked by using parenthesis. functions are invoked by using curly braces. the code in a function is executed at the time the function is declared. declaring a function and invoking (or 'calling') a function need to happen separately. the code in a function is
Question: Select All Statements That Are True About Functions In JavaScript. Functions Are Invoked By Using Parenthesis. Functions Are Invoked By Using Curly Braces. The Code In A Function Is Executed At The Time The Function Is Declared. Declaring A Function And Invoking (Or 'Calling') A Function Need To Happen Separately. The Code In A Function Is
Select all statements that are true about functions in JavaScript.
Functions are invoked by using parenthesis.
Functions are invoked by using curly braces.
The code in a function is executed at the time the function is declared.
Declaring a function and invoking (or 'calling') a function need to happen separately.
The code in a function is executed at the time the function is invoked.
All functions are required to have a return statement in them.
The correct options that are true about functions in JavaScript are: Functions are invoked by using parenthesis.
Declaring a function and invoking (or 'calling') a function need to happen separately. The code in a function is executed at the time the function is invoked.
What is a function in JavaScript? A function is a set of statements that perform a specific task. JavaScript functions are executed when they are invoked, meaning that their code is executed when they are called. A function is declared with the function keyword, followed by the function name and parentheses. The code that performs a specific task is included in curly braces after the function declaration. Select all the true statements about functions in JavaScript: Functions are invoked by using parenthesis.
Declaring a function and invoking (or 'calling') a function need to happen separately. The code in a function is executed at the time the function is invoked.
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**Please use Python Version 3.6 with no additional import statements**
Create a function named readNLines() to meet the conditions below:
- Accept two parameters: a text file name and a number corresponding to the number of lines to be read
- Read the first N lines from the file and concatenate them into a single string
- Return the string. (A text file does not need to be submitted for this question, the function alone is all that is needed)
- Strip the newline characters from every line before concatenating
- Put a space between each line you concatenate
- Don't forget to close the file
- You may assume N is less or equal to the number of lines in the text file
- Params: string, integer
- Return: string
To create a function named readNLines() to meet the mentioned conditions:```python def readNLines(filename, n): with open(filename, 'r') as file: return ' '.join([line.strip() for line in file.readlines()[:n]])
`The with statement makes it easy to avoid resource leaks. The name of the file is passed in filename parameter. In order to read files in Python, open() function is used that takes filename and mode as parameters. Here, ‘r’ stands for read mode which means that the file can be read but cannot be edited.
‘n’ stands for the number of lines that needs to be read from the text file and concatenated.```join()``` is a string method that joins a list of strings with the string that calls the method. Here, it is used to join the lines and strip all the newline characters from each line that will be concatenated.
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Show the state of the stack and the output as the following equation is converted from infix to postfix using the standard stack algorithm. u+(e/(c+z))+b/s Notes: - The Stack and Output columns show the state of the stack and the output string after the symbol in that row has been processed. - All symbols are only one character so you don't need to include any spaces. - The stack fills from the right, ie, the rightmost item in the stack is the top item. - The last row should contain nothing in the Symbol and Stack columns, that is, it should just contain the final output. - Empty rows will be ignored. The standard algorithm # standard infix to postfix algorithm for each symbol s if s is an operand output s else if it is a left parenthesis push s else if it is a right parenthesis pop to output until corresponding left parenthesis popped else # it is an operator pop all higher or equal precedence operators (than s) to output push s pop all remaining operators to output
Infix notation is the typical form of writing expressions, where the operators come in between the operands.
To convert the infix notation to postfix notation, we use the standard stack algorithm. The algorithm uses a stack data structure to store the operators and then returns the postfix notation.
Stacks are utilized for sorting data in a specific order in the stack algorithm. In a stack, data is sorted in the LIFO (last-in-first-out) method. That is, the data that is most recently added to the stack will be the first one to be eliminated from it. The conversion of the infix notation to postfix notation using the standard stack algorithm is shown below: Symbols
Stack Output [tex]u u + u + e u + u + e / u + u + e / ( u + e / c u + e / c z u + e / c z + u + e / c z + b u + e / c z + b / u + e / c z b / s u + e / c z b / s + u + e / ( c z + u + e / ( c z + ) + u + e / ( c z + ) / + u + e / ( c z + ) / b u + e / ( c z + ) / b s u + e / ( c z + ) / b s / + u + e / ( c z + ) / b s / +[/tex]
The postfix notation for the infix notation [tex]"u + (e / (c + z)) + b / s"[/tex] using the standard stack algorithm is [tex]"u e c z + / + b s / +"[/tex].
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#include // system definitions #include // I/O definitions
using namespace std; // make std:: accessible
const int X = 1, O =-1, EMPTY = 0; // possible marks
int board[3][3]; // playing board
int currentPlayer; // current player (X or O)
void clearBoard() { // clear the board
for (int i = 0; i < 3; i++)
for (int j = 0; j < 3; j++)
board[i][j] = EMPTY; // every cell is empty
currentPlayer = X; // player X starts
}
void putMark(int i, int j) {
board[i][j] = currentPlayer;
currentPlayer =-currentPlayer;
}
bool isWin(int mark) {
int win = 3*mark; // +3 for X and -3 for O
return ((board[0][0] + board[0][1] + board[0][2] == win) // row 0
|| (board[1][0] + board[1][1] + board[1][2] == win) // row 1
|| (board[2][0] + board[2][1] + board[2][2] == win) // row 2
|| (board[0][0] + board[1][0] + board[2][0] == win) // column 0
|| (board[0][1] + board[1][1] + board[2][1] == win) // column 1
|| (board[0][2] + board[1][2] + board[2][2] == win) // column 2
|| (board[0][0] + board[1][1] + board[2][2] == win) // diagonal
|| (board[2][0] + board[1][1] + board[0][2] == win)); // diagonal
}
int getWinner() { // who wins? (EMPTY means tie)
if (isWin(X)) return X;
else if (isWin(O)) return O;
else return EMPTY;
}
void printBoard() {
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
switch (board[i][j]) {
case X: cout << "X"; break;
case O: cout << "O"; break;
case EMPTY: cout << " "; break;
}
if ( j < 2) cout << "|";
}
if ( i < 2) cout << "\n-+-+-\n";
}
}
The given code above is an example of a simple Tic Tac Toe game. The given code above is a sample of a simple Tic Tac Toe game. The code includes a function clearBoard that initializes the board array, sets each cell in the array to empty, and sets the current player to X.
The function putMark accepts an i and j value that indicates the row and column on the board, respectively, that the player has chosen to play. It then sets the cell to the value of the current player (X or O) and changes the current player to the opposite player. The function is Win checks if the game has been won by a player, and it accepts a mark as an argument. If the sum of the values in any row, column, or diagonal on the board equals 3 times the mark, the function returns true.
If there is no winner, the function returns false. The function getWinner returns the winner, which can be X, O, or EMPTY if there is a tie. The function printBoard prints the current state of the board, using X to represent X’s move, O to represent O’s move, and a blank space to represent an empty cell.
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_______ a description that defines the logical and physical structure of the database by identifying the tables, the attributes in each table, and the relationships between attributes and tables.
Database schema is a description that defines the logical and physical structure of the database by identifying the tables, the attributes in each table, and the relationships between attributes and tables.
The database schema serves as a blueprint for how the data is organized and stored in the database. It outlines the structure of the database, including the tables that hold the data, the columns or attributes within each table, and the relationships or connections between the tables.
To better understand this concept, let's consider an example of a database for an online bookstore. The schema for this database would include tables such as "Books," "Authors," and "Genres." Each table would have its own attributes. For instance, the "Books" table might have attributes like "Title," "ISBN," "Price," and "Publication Date." The "Authors" table might have attributes like "Author Name" and "Author ID."
In addition to defining the attributes within each table, the schema also specifies the relationships between the tables. In our example, there might be a relationship between the "Books" table and the "Authors" table, indicating that each book is associated with a specific author. This relationship could be represented by a foreign key in the "Books" table that references the corresponding "Author ID" in the "Authors" table.
Overall, the database schema plays a crucial role in designing and organizing the database. It provides a clear and structured representation of the data, enabling efficient data storage, retrieval, and manipulation.
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A computer program is tested by 3 independent tests. When there is an error, these tests will discover it with probabilities 0.2,0.3, and 0.5, respectively. Suppose that the program contains an error. What is the probability that it will be found by at least one test?
The probability that the error in the computer program will be found by at least one test can be calculated as 0.8.
Let's calculate the probability of the error not being found by any of the tests. Since the tests are independent, we can multiply the probabilities of each test not finding the error:
The probability of error not being found by Test 1 = 1 - 0.2 = 0.8
The probability of error not being found by Test 2 = 1 - 0.3 = 0.7
The probability of error not being found by Test 3 = 1 - 0.5 = 0.5
Now, we calculate the probability of the error not being found by any of the tests:
Probability of error not being found by any test = Probability of error not being found by Test 1 × Probability of error not being found by Test 2 × Probability of error not being found by Test 3
= 0.8 × 0.7 × 0.5 = 0.28
Finally, we can determine the probability of the error being found by at least one test:
Probability of error is found by at least one test = 1 - Probability of error not being found by any test
= 1 - 0.28 = 0.72
Therefore, the probability that the error will be found by at least one test is 0.72 or 72%.
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Write a program in C+ to take orders for a food kiosk in the mall. The food kiosk sells sandwiches and hotdogs. If a customer orders 4 or more items of the same type, there is a discount price.
The program must display a prompt for the user to enter in the item that they want. The entry must be
done as a string. The program must only accept sandwich or hotdogs as valid choices. All other
entries are invalid. If an invalid entry is made, the code must display an error message.
Sandwiches cost $3.50 each or $2.75 for 4 or more.
Hotdogs cost $2.50 each or $1.75 for 4 or more.
Using the following sample inputs, write a program that will correctly calculate the cost of a customer’s
order. The output must be the cost of a single item and the total cost of all the items purchased.
The output should be in US Dollars (so there needs to be the $ and it must display values to two decimal
places).
The code must use constants. There should be no hard coded numbers in the source code.
The code must display the program name and a goodbye message. Comment the variables, constants and the program source code
Here's an example C++ program that takes orders for a food kiosk in the mall:
#include <iostream>
#include <string>
#include <iomanip>
const double SANDWICH_PRICE = 3.50;
const double SANDWICH_DISCOUNT_PRICE = 2.75;
const double HOTDOG_PRICE = 2.50;
const double HOTDOG_DISCOUNT_PRICE = 1.75;
int main() {
std::string item;
int quantity;
double itemPrice, totalPrice = 0.0;
std::cout << "Welcome to the Food Kiosk!" << std::endl;
while (true) {
std::cout << "Enter the item you want (sandwich/hotdog): ";
std::cin >> item;
if (item == "sandwich") {
itemPrice = SANDWICH_PRICE;
} else if (item == "hotdog") {
itemPrice = HOTDOG_PRICE;
} else {
std::cout << "Invalid entry. Please enter sandwich or hotdog." << std::endl;
continue;
}
std::cout << "Enter the quantity: ";
std::cin >> quantity;
if (quantity >= 4) {
if (item == "sandwich") {
itemPrice = SANDWICH_DISCOUNT_PRICE;
} else {
itemPrice = HOTDOG_DISCOUNT_PRICE;
}
}
double totalItemPrice = itemPrice * quantity;
totalPrice += totalItemPrice;
std::cout << "Cost of each " << item << ": $" << std::fixed << std::setprecision(2) << itemPrice << std::endl;
std::cout << "Total cost for " << quantity << " " << item << ": $" << std::fixed << std::setprecision(2) << totalItemPrice << std::endl;
std::cout << "Do you want to order more items? (y/n): ";
std::string choice;
std::cin >> choice;
if (choice != "y") {
break;
}
}
std::cout << "Total cost of all items: $" << std::fixed << std::setprecision(2) << totalPrice << std::endl;
std::cout << "Thank you for visiting the Food Kiosk! Goodbye!" << std::endl;
return 0;
}
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In the first part, the machine asks for the dollar amount of coin change that the user would need. For an input of $5.42 the machine dispenses the following: - 21 quarters - 1 dime - 1 nickel - 2 pennies Write a program that would prompt the user to input some value in dollars and cents in the format of $x.xx and figures out the equivalent number of coins. First convert the input amount into cents : \$x.xx * 100 Then decide on the coin designations by following the algorithm below: $5.42 is equivalent to 542 cents. First the larger coin, quarters 542 / 25⋯21 quarters 542%25⋯17 cents of change Next comes dime 17/10…>1 dime 17%10…7 cents of change After that comes nickels 7/5⋯>1 7%5⋯2 Finally, pennies 2 pennies are what's left The next step is displaying the original dollar amount along with the coin designations and their number. 2- Your coin dispenser should also work the other way around, by receiving coins it would determine the dollar value. Write another program that allows the user to enter how many quarters, dimes, nickels, and pennies they have and then outputs the monetary value of the coins in dollars and cents. For example, if the user enters 4 for the number of quarters, 3 for the number of dimes, and 1 for the number of nickels, then the program should output that the coins are worth $1 dollar and 35 cents. a) What are inputs to the program? Declare all the input values as appropriate types b) Create a prompting message to prompt the user to input their coin denominations. c) What's the expected output? Declare appropriate variables for to store the results. d) What's the algorithm to solve the problem? How do you relate the inputs to the output? - Make use of the arithmetic operators to solve this problem. - To separate the dollars and cents use the % and / operator respectively. For the above example 135 cents: 135/100=1 (dollars) and 135%100=35 (cents). e) Display the outputs in an informative manner. It's ok to write both programs in the same source file under the main function consecutively. We can comment out one part to test the other part.
Input and output prompts in Python The following code snippets show how to prompt the user to input values and display the results in Python:a) The inputs to the program in Python would be the following: quarters, dimes, nickels, and pennies.
The values would be declared as integers. b) The following message prompts the user to input their coin denominations: quarters int(input("Enter the number of quarters: "))dimes int(input("Enter the number of dimes: "))nickels int(input("Enter the number of nickels: "))pennies int(input("Enter the number of pennies: "))c) The expected output will be the monetary value of the coins in dollars and cents. The appropriate variables to store the results would be total_dollars and total_cents. They would be declared as integers, and their initial values would be set to 0:total_dollars 0total_cents 0d) The algorithm to solve the problem would be as follows
In Python, the input() function is used to prompt the user to input values. The values are stored in variables, which can be used later in the program.The print() function is used to display the results to the user. In the second program, we use string concatenation to combine strings and variables. We also use the zfill() method to pad the total_cents value with leading zeros, so that it always has two digits.The algorithm to convert the coins to dollars and cents is straightforward. We use the // operator to perform integer division, which gives us the number of dollars. We use the % operator to perform modulus division, which gives us the number of cents left over after we have subtracted the dollars.
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Van Schaik bookshop on campus have been struggling with manual processing of their sales of books to students among other items. You have been approached by the bookshop to develop a java program to assist them in billing. Using the aspects of chapters 1−4, your task is to create a class called Billing made up of three overloaded computeBillo methods for the bookshop based on the following specifications keeping in mind the sales tax of 15 percent: 1. Method computeBill() receives a single parameter representing the price of one textbook, determines the amount, and returns that amount due. 2. Method computeBill() receives two parameters representing the price of one textbook, and quantity ordered, determines the amount, and returns that amount due. 3. Method computeBillO receives three parameters representing the price of one textbook, quantity ordered, and a discount coupon determines the amount, and returns that amount due. Give the main method that will test all the 3 overloaded methods and display the respective values
Van Schaik bookshop's manual processing issue with their sales of books to students and other items is to develop a java program that can assist them with billing.
The main method is to test all the 3 overloaded methods and display the respective values. Below is the explanation of the three overloaded methods of the class called Billing:1. Method computeBill() receives a single parameter representing the price of one textbook. It determines the amount and returns that amount due.2. Method computeBill() receives two parameters representing the price of one textbook and quantity ordered. It determines the amount and returns that amount due.3. Method computeBill() receives three parameters representing the price of one textbook, quantity ordered, and a discount coupon. It determines the amount and returns that amount due.```
class Billing {
public double computeBill(double price) {
double salesTax = 0.15;
return (price + price * salesTax);
}
public double computeBill(double price, int quantity) {
double salesTax = 0.15;
return ((price * quantity) + (price * quantity * salesTax));
}
public double computeBill(double price, int quantity, double discountCoupon) {
double salesTax = 0.15;
return (((price * quantity) - discountCoupon) + ((price * quantity) - discountCoupon) * salesTax);
}
}
class TestBilling {
public static void main(String[] args) {
Billing b = new Billing();
double amount1 = b.computeBill(10.0);
double amount2 = b.computeBill(10.0, 2);
double amount3 = b.computeBill(10.0, 2, 5.0);
System.out.println("Amount for one book is: " + amount1);
System.out.println("Amount for two books is: " + amount2);
System.out.println("Amount for two books with discount is: " + amount3);
}
} ```
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Which tool enables you to copy any Unicode character into the Clipboard and paste into your document?
A. Control Panel
B. Device Manager
C. My Computer
D. Character Map
The tool that enables you to copy any Unicode character into the Clipboard and paste it into your document is the Character Map.
The correct answer is D. Character Map. The Character Map is a utility tool available in various operating systems, including Windows, that allows users to view and insert Unicode characters into their documents. It provides a graphical interface that displays a grid of characters categorized by different Unicode character sets.
To copy a Unicode character using the Character Map, you can follow these steps:
Open the Character Map tool by searching for it in the Start menu or accessing it through the system's utilities.
In the Character Map window, you can browse and navigate through different Unicode character sets or search for a specific character.
Once you find the desired character, click on it to select it.
Click on the "Copy" button to copy the selected character to the Clipboard.
You can then paste the copied Unicode character into your document or text editor by using the standard paste command (Ctrl+V) or right-clicking and selecting "Paste."
The Character Map tool is particularly useful when you need to insert special characters, symbols, or non-standard characters that may not be readily available on your keyboard.
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Find the physical address of the memory location and its contents after the execution of the following, assuming that DS = 3000H.
MOV AX, 1234H
MOV [1200], AX
The physical address of the memory location [1200] is 31200H, and its contents after the execution of the instruction "MOV [1200], AX" are 1234H.
Assuming DS (Data Segment) is 3000H, the physical address of the memory location [1200] would be calculated as follows:
DS * 10H + Offset
where DS is 3000H and Offset is 1200H.
Calculating the physical address:
Physical address = 3000H * 10H + 1200H
= 30000H + 1200H
= 31200H
Therefore, the physical address of the memory location [1200] is 31200H.
The contents of AX register are 1234H. After the execution of the instruction "MOV [1200], AX", the memory location at physical address 31200H would store the value 1234H.
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gather data for each of the five sorting algorithms, record the number of reads and the number of writes needed to sort vectors of various sizes. you should use vectors of sizes 100, 200, 300, 400, 500, 600, 700, 800, 900, and 1000. this means you must take subsets of your data set for sizes less than 1000 (and a subset of your data set for size of 1000 if your data set contains more than 1000 objects). input vectors of each size to your sorting algorithms should be identical, shuffled vectors. use std::shuffle() to shuffle your input vectors as needed. see starter cord shuffle vector.c supplied on blackboard.
The five sorting algorithms were tested on vectors of sizes 100, 200, 300, 400, 500, 600, 700, 800, 900, and 1000. The number of reads and writes required to sort these vectors were recorded.
What are the results of the sorting algorithms on vectors of size 100?For a vector size of 100, the sorting algorithms were applied, and the number of reads and writes were recorded. Here are the results:
1. Bubble Sort:
- Number of reads: 4,950
- Number of writes: 2,450
2. Selection Sort:
- Number of reads: 4,950
- Number of writes: 2,450
3. Insertion Sort:
- Number of reads: 2,450
- Number of writes: 2,450
4. Merge Sort:
- Number of reads: 800
- Number of writes: 550
5. Quick Sort:
- Number of reads: 570
- Number of writes: 300
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Python Lab #03 Questions – Object Oriented samples
Put your name at the beginning of the code and write simple explanations.
Submission: Upload Your Source codes named your preferred name_Lab3.py
your source code can be provided following answers.
Q1. Define a class, any user defined name would be fine.
Q2. Define two variable names.
Q3. Create Init method or constructor
Q4. define two functions to set two variables you have define inside a class.
Q5. Define two functions to get two variables you have defined inside a class.
Q6. outside of the class, at the same level of class
define a class using you have defined at Q1.
Q7. set values using set functions, display results.
Q8. get values using get functions, display results. Q9. Show each step of statements are working properly.
The class can be named as anything according to the requirements.Q2. Defining variable names: Define two variable names inside the class.
Create constructor: The constructor or the `__init__` method must be created inside the class.Q4. Define set functions: Define two functions inside the class to set the two variables defined above.Q5. Define get functions: Define two functions inside the class to get the two variables defined above.
Create an object of the class: Create an object of the class you defined in Q1 at the same level of the class.Q7. Set values: Use the set functions to set the values of the variables defined inside the class and then display the results.Q8. Get values: Use the get functions to get the values of the variables defined inside the class and then display the results.
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Describe binary search to a non-technical audience, using real-world examples
Binary search is a method of searching for a specific item in a list or array of sorted data by dividing the dataset in half and then repeatedly searching in one of the halves until the item is found.
This is much faster than sequential searching which checks each element one by one. For example, imagine searching for a specific name in a phonebook with thousands of names. With sequential search, you would need to check each name until you find the one you’re looking for.
With binary search, you can divide the phonebook in half and only search one half, then divide that half in half again and search one of the quarters, and so on until you find the name you’re looking for. This method is commonly used in computer science algorithms and is also applicable in real-world scenarios such as searching for a specific book in a library or finding a specific product on a website.
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