The correct option is A. The program shows the number of times the target appears in the list appropriately. The count() method in python returns the number of times the specified element appears in the list.
The syntax of the count() method is list.count(element)
The count() method takes a single argument i. e. element - the element to be counted. It returns the number of times element appears in the list.
Python is renowned for having a simple syntax, quick implementation, and—most importantly—a significant amount of support for various data structures. One of the Python data structures that makes it possible to store a lot of sequential data in a single variable is the list. Given that variable stores a lot of data, it can be challenging to manually determine whether a given element is included in the lists and, if so, how many times.
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in c. This program reads in a series of words. All words consist of only lower-case letters ('a' through 'z'). None of the words entered will be longer than 50 letters. The program reads until end-of-file, and then prints out all the lower-case letters that were missing in the input or a statement indicating the input has all the letters. Two executions of the program are shown below.
Enter your input:
the quick brown fox jumps over the lazy old dog
Your input contains all the letters
Enter your input:
alabama crimson tide
Missing letters: f g h j k p q u v w x y z
To keep track of the letters that have been viewed, we can use an array. When we read each word, we may set the matching item in the array to 1 for each letter that appears by initializing the array with all zeros.
How do I initialize every element of an array in C to 0?This will initialize the num array with a value of 1 at every index: int num[5] = 1, 1, 1, 1, 1. If the initializer list is empty or contains only the number 0, the array will be initialized to 0.
'#include stdio.h'
"ctype.h" is included."
char word[51]; / Allocate space for largest word (50 letters + null terminator) in int main() int seen[26] = 0; / Initialize array to all zeros
as long as (scanf("%s", word) == 1) for (i++; word[i]!= '0'; int I = 0 char c = tolower(word[i]); if (c >= "a" && c = "z" the following code: seen[c - 'a'] = 1; / Mark letter as seen
if (int I = 0; I 26; i++) then int missing = 0 if (!seen[i]) missing = 1; printf("%c ", "a" + i);
Printf ("Your input contains all the letters") if (!missing);
returning 0;
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A drink costs 2 dollars. A taco costs 3 dollars. Given the number of each, compute total cost and assign totalCost with the result in java program
Here's a Java program that takes the number of drinks and tacos as input and calculates the total cost:
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter the number of drinks: ");
int numDrinks = scanner.nextInt();
System.out.print("Enter the number of tacos: ");
int numTacos = scanner.nextInt();
double drinkCost = 2;
double tacoCost = 3;
double totalCost = (numDrinks * drinkCost) + (numTacos * tacoCost);
System.out.println("Total cost: $" + totalCost);
}
}
Which of the following statements accurately describe null field values? Select all the options that apply. a. A null field value indicates unknown data. b. You enter a null value by leaving a field blank in a record. c. You can use the Is Null criterion to select records with null values. d. You enter a null value by typing two quotation marks ("").
The statements that accurately describe null field values are:
a: A null field value indicates 'unknown data'
b: You enter a null value by leaving a field blank in a record
c: You can use the 'Is Null' criterion to select records with null values
Null field values are used in databases to represent missing or unknown data. A null value means that the value of a field is not currently known or has not been entered into the database. Null values can be entered by leaving a field blank when entering a record or by explicitly assigning a null value to a field.
However, statement d is not accurate, as entering two quotation marks ("") is used to represent an empty string, not a null value.
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Select the option that examines and blocks Internet traffic in order to protect your private network.
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firewall
Firewall examines and blocks Internet traffic in order to protect your private network.
About firewallIn simple terms, the term firewall is a network security device that monitors and filters incoming and outgoing network traffic based on predetermined security rules. Basically, a firewall is software that is installed on a computer and is used to increase the security protection of devices connected to the internet network.
A firewall is often likened to a firewall whose job is as a network security post that prevents unauthorized access to a private network. This is done to prevent threats from various viruses or cyber attacks that can damage data and cause substantial losses.
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Given a partially filled array of primitive integers amed 'grades' and an integer variable named 'count' that holds the number of usable values in the array l in the blank to complete the following code that removes the element at index 2, moving all other usable values down. for (__________) {grades[i] grades[i + 1];} count- Use proper spacing per the course style guide. Do not include additional spaces at the beginning or end.
An object that stores numerous values of the same kind is called an array. One value makes up an element of an array. An integer that designates a spot in an array is called an array index.
Similar to how Strings employ zero-based indexing, array indexes begin with 0. The next example shows the values and indices of an array with 10 int-type entries. declaration and construction of arrays
Declaring an array uses the following syntax:
a variable of type; This does not really generate the array; it only declares a variable that can carry an array.
For instance, we might use: to declare a variable called numbers that may store an array of integers.
the integers; We construct arrays using new since they are objects.
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Effective presentations are:
Answer:A good presentation should be concise and should be focused on the topic. It should not move off-track. A good presentation should have the potential to convey the required information. The fear should be transformed into positive energy during the presentation. Be calm and relaxed while giving a presentation.
Explanation:
Define a function in c called ExactChange that takes the total change amount in cents and an integer array as parameters. Function ExactChange() calculates the change using the fewest coins and stores the number of each coin type used into the array parameter. Index 0-3 of the array parameter should contain the number of pennies, nickels, dimes, and quarters respectively. Then write a main program that reads the total change amount as an integer input, calls ExactChange(), and outputs the change, one coin type per line. Use singular and plural coin names as appropriate, like 1 penny vs. 2 pennies. Output "no change" if the input is 0 or less.
The six coin denominations are stored in the coin Denominations array, decreasing in value. The array's denominations are represented by the number of coins in the num Coins variable.
How can a coin change issue be resolved?The coin change problem has two solutions: the first is a naive solution, which is a recursive solution, and the second is a dynamic solution, which is an effective solution for the coin change problem.
void ExactChange(int* coinsArray, int* changeAmount) Int numCoins = sizeof(coinDenominations) / sizeof(coinDenominations[0]); int coinDenominations[] = 100, 50, 25, 10, 5, 1;
Coins Array[i] = change Amount / coin Denominations[i] for (int I = 0; I num Coins; i++); change Amount = change
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Which of the following lines of code declare a variable?
O height = 6;
O int height = 6;
O int height;
O height = height + 5;
Declare a variable with the value 6 for int height based on the information provided in the question.
What is a variable?A variable in programming is a quantity that can change based on external factors or data that has been supplied to the program. A program normally consists of instructions that instruct the computer what to do and data that it utilizes while running.
Why do programmers use variables?Programmers and coders employ variables to make it easier for them to comprehend, retain, and utilise programmatic data. A variable's name can be used to retrieve the data it stores later in the program once it has been assigned.
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The upgraded system uses a directory containing additional information not supplied by the customer. The directory is used to help direct calls effectively.
According to the statement, calls are managed by an improved system that now has a directory that includes extra information that wasn't provided by the consumer.
A directory is a hierarchical structure that organises files and other directories in computing. In certain operating systems, it goes by the name of a folder as well. Organizing files and other directories into logical, searchable containers is what directories are thought of as doing. They give users a way to group similar files together and enhance the overall administration and organisation of computer data. The properties of directories can be changed to manage access and permissions. Directories can be created, renamed, moved, copied, and destroyed. Directories are crucial components of contemporary computer systems because they offer a practical means of organising and storing massive amounts of data.
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Accounting software has improved significantly over time. We now have intelligent or automated accounting systems that can: (Check all that apply.) A. Use machine learning and artificial intelligence to process data and store it in the cloud B. Record transactions automatically, perform on demand accounting functions, and automatically distribute data C. Make critical and strategic management decisions without human intervention D. Allow companies and clients to use smart portals to transfer data and information back and forth securely
A, B, and D are used. Utilize artificial intelligence and machine learning to process data, store it in the cloud, and Automatically distribute data, automatically record transactions.
Perform on-demand accounting Allow businesses and customers to safely exchange data and information through smart portals. Contrary to the intelligence exhibited by non-human animals and people, artificial intelligence (AI) refers to the perception, synthesis, and inference of information made by computers. Speech recognition, computer vision, interlanguage translation, and various mappings of inputs are a few examples of activities where this is done. Since its establishment as a field of study in 1956, artificial intelligence has gone through a number of waves of optimism, disappointment, and funding loss followed by new strategies, success, and renewed investment.
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Among the different types of data models, ______ data models are the dominant one in use today, because they offer advantages over other data models, including: flexibility and scalability, simplicity, and reduced information ________
Relational data models are the dominant one in use today, because they offer advantages over other data models, including: flexibility and scalability, simplicity, and reduced information redundancy.
What is the scalability?Scalability is the ability of a system, network, or process to handle a growing amount of work in a capable manner or its ability to be enlarged to accommodate that growth. Scalability can be accomplished in a number of ways including increasing capacity of existing hardware and software, upgrading existing network infrastructure, and using more efficient algorithms. By scaling, companies and organizations can handle more customers, data, and transactions without sacrificing performance or availability. Scalability is a key factor for companies looking to build and maintain robust, reliable, and secure systems.
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Mr. Smith is a renowned gastronomist. As his job needs knowledge of a wide range of cuisines, he tries to remember a dish by its taste as well as its smell. which of the following will best describe the technique used by Mr. Smith to remember various dishes
dual coding
Mr. Smith uses dual coding to help him remember different dishes. A popular memory technique that can be utilised for a variety of different tasks is dual coding.
According to the cognitive learning principle known as "dual coding," when information is provided in both verbal and visual formats, people are better able to process and retain it. It asserts that integrating visual and verbal information opens up two separate pathways for the processing and encoding of information in the brain, increasing the possibility that the knowledge will be remembered and later retrieved. This method can help students learn difficult material more effectively while also improving their ability to recall information and solve problems. Dual coding theory has been used to inform instructional practises for better learning outcomes in a variety of domains, including education, psychology, and design.
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when you run ipconfig/all you get the following result. what is the most likely problem with your host? ip address of 169.254.179.81 with a subnet mask of 255.255.0.0 group of answer choices a. no communication with the dhs server b. no communication with the dns server c. no communication with the apipa server d. no communication with the dhcp server
the most likely problem with the host is(d)No communication with the DHCP server.
The term "Automatic Private IP Addressing" is used by many client operating systems. Even in the absence of a DHCP server, this procedure assigns an IP address. The client chooses a random 16-bit number and appends 169.254.x.x to it if a DISCOVER message is not responded to. It assigns that address to itself by performing an unnecessary ARP. With Automatic Private IP Addressing, two passengers might swiftly and conveniently connect their gadgets. One example is a game that two train riders could play while traveling to the city. On their laptops, they set up DHCP and Automatic Private IP Addressing, and when they arrive to the workplace, they receive a new IP. The DHCP server is running if you see a 169.254.x.x address.
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What was the first product Apple released and why was it significant?
The first product that Apple released was the Apple I computer in 1976.
It was significant because it was one of the first personal computers to be sold as a fully assembled circuit board, making it accessible to a wider range of people.
Apple I computer was the first product to bear the Apple logo and laid the foundation for the company's future success in the computer industry.
In the mid-1970s, personal computers were mostly in the form of do-it-yourself kits or unassembled parts that required significant technical expertise to put together.
The Apple I, which was sold as a fully assembled circuit board with a processor, memory, and basic input/output system (BIOS), was one of the first personal computers to be sold in this form.
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explain the difference between the following terms: - digital transformation, - digital technology, - digital innovation, - digital entrepreneurship
Digital Transformation is the use of technology to transform business operations and customer experiences.
What is Entrepreneurship?Entrepreneurship is the process of starting a business or organization, usually from scratch, with the goal of making a profit. It involves taking risks and working hard to create something of value. Entrepreneurs are those who take initiative to create and develop innovative solutions to problems and bring these solutions to the market. It requires creativity, knowledge, and dedication in order to achieve success.
Digital Transformation is the process of adopting digital technology to reshape business operations and customer experiences. Digital Technology is the use of technology to automate and optimize processes. Digital Innovation is the use of new technology to create new products and services. Digital Entrepreneurship is the use of digital technology to create a new business or new product.
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David is a brand new help desk technician. To perform his job, he needs to be able to install programs and printers, but should not have full access to change everything on a Windows workstation. Which of the following types of user accounts should David be given to perform his job as a help desk technician?
Options are :
a. Remote Desktop User
b. Guest
c. Power User
d. Administrator
David should be given a Power User account to perform his job as a help desk technician. The correct option is c. Power User.
A Power User account allows a user to install programs and printers, but does not give full access to change everything on a Windows workstation. This type of account is designed for users who need more permissions than a standard user, but not as much as an Administrator. A Remote Desktop User account is used for remote access to a computer, a Guest account is for temporary or infrequent users, and an Administrator account has full access to change everything on a Windows workstation.
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which of the following types of cad formats can you import into the autodesk revit software? (select all that apply.)
DWG and DXF formats can be imported into Autodesk Revit. These are popular CAD formats which are used for exchanging data between different software.
All that apply:
A. DWGC. DXFDWG are primarily used for storing 2D and 3D design data, while DXF files are used for exchanging vector data between CAD programs. Both formats can be used for creating, editing and viewing technical drawings in Revit. Additionally, Revit is also able to import IFC, SAT, and SKP files, which are also commonly used CAD formats.
Here's the full task:
Which of the following types of cad formats can you import into the Autodesk revit software?
Select all that apply:
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all persons who have direct access to fbi cji data and all appropriate information technology (it) personnel (including vendors) shall receive security awareness training on a biennial basis. T/F
True, all persons who have direct access to fbi cji data and all appropriate information technology (it) personnel (including vendors) shall receive security awareness training on a biennial basis.
What kind of authentication is necessary at the FBI in order to access FBI CJI data?
Identification and Authentication: "Users must adhere to the CJIS authentication standards in order to access CJIS data, and agencies are therefore obligated to employ multi-factor authentication" (MFA). For user authentication, MFA utilizes two or more "factors."
The FBI database is accessible to whom?
For non-criminal justice purposes including employment and licensing, where permitted by federal law, federal, State, municipal, and tribal authorities and private businesses have access to the underlying information in FIRS.
The word "CODIS," which stands for "Combined DNA Index System," is used to refer to both the FBI's program for supporting criminal justice DNA databases and the software that powers those databases.
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TRUE/FALSE. The Hypervisor Clustering architecture relies on the use of heartbeat messages to determine whether a given hypervisor within a cluster is active and available.
FALSE The Hypervisor Clustering architecture relies on the use of heartbeat messages to determine whether a given hypervisor within a cluster is active and available.
What is the heartbeat and hypervisor clustering architecture?In order to ensure that active virtual servers are moved to another physical server in the event of a failure, hypervisors are clustered among several of them. Application. To continue status monitoring, heartbeat messages are sent between clustered hypervisors and a central VIM.
What function does the hypervisor Mcq have?Hypervisors: Enable the use of virtual machines to execute an operating system independently of the underlying hardware. Share your computer's memory, storage, and computational resources.
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cse446 what are the limitation of the web application of html5 with javascript? select all that apply.
There are several limitations of web applications built with HTML5 and JavaScript. Some of these limitations include:
Security concerns: Web applications built with HTML5 and JavaScript can be vulnerable to security threats such as cross-site scripting and SQL injection attacks.Offline access: HTML5 and JavaScript do not provide robust support for offline access. Although some features like local storage and application cache are available, they have limitations in terms of data storage and synchronization.Performance issues: Web applications built with HTML5 and JavaScript can suffer from performance issues when processing large amounts of data or complex operations. This can result in slow load times, unresponsive user interfaces, and other issues.Browser compatibility: Web applications built with HTML5 and JavaScript can have compatibility issues with different browsers and devices, requiring developers to test and optimize their applications for multiple platforms.To know more about JavaScript visit:
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which of the following are the benefits for a speaker of arriving early to a speech or presentation? increased familiarity with the contentdiscovery of areas where content needs to be alteredawareness of places to highlight with nonverbal communication
Option: All of the above. Arriving early provides the speaker with an opportunity to become more familiar with their content, to identify areas that require alteration, and to effectively use nonverbal communication.
Arriving early to a speech or presentation is beneficial for a speaker in many ways. It gives them time to become familiar with their content and to identify areas that need to be altered to better engage their audience.
It also allows them to determine the best places to highlight with nonverbal communication, such as hand gestures, facial expressions and body language. This will enable the speaker to better connect with the audience and enhance their presentation.
Finally, arriving early allows for the speaker to take some time to relax and settle their nerves before their speech begins.
Here's the full task:
Which of the following are the benefits for a speaker of arriving early to a speech or presentation?
Choose the right option:
Increased familiarity with the content Discovery of areas where content needs to be altered Awareness of places to highlight with nonverbal communicationAll of above.Learn more about Communication: https://brainly.com/question/26152499
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separation of concerns is the design principle of breaking up web content using distinct languages and documents that overlap as little as possible. in modern web design, document structure and text, visual layout, and page interaction are separately specified using three key languages.
Modern web design specifies document structure and text, visual layout, and page interaction separately in three major languages: Object-oriented programming languages, Procedural programming languages and Aspect-oriented programming languages.
What are languages used for Separation of concerns?Object-oriented programming languages such as C#, C++, Delphi, and Java can separate concerns into objects. Also, architectural design patterns such as MVC and MVP can separate presentation and data processing (models) from content. Service-oriented design allows you to decompose concerns into services. Procedural programming languages such as C and Pascal let you divide concerns into procedures and functions. Aspect-oriented programming languages can separate concerns into aspects and objects.
What is the importance of Separation of concerns?Separation of concerns is also an important design principle in many other fields, such as urban planning, architecture, and information design. The goal is to better understand, design, and manage complex interdependent systems so that functionality can be reused, optimized independently of other functions, and isolated from potential failures of other functions.
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write a c program that declares a vector alpha of 50 components of type double. the first 25 components should be equal to the square of the index variable, and the last 25 components are equal to three times the index variable. output the vector so that 10 elements per line are printed using vectors
You can write a C program to declare a vector alpha of 50 components of type double.
To set the first 25 components to the square of the index variable, and the last 25 components to three times the index variable, use a for loop to iterate over the vector and assign the values accordingly.
The output can be printed using vector notation:
for (int i = 0; i < 50; i++) {
if (i < 25) {
alpha[i] = i * i;
} else {
alpha[i] = i * 3;
}
}
printf("Vector alpha = {");
for (int i = 0; i < 50; i++) {
printf("%f", alpha[i]);
if (i != 49) printf(", ");
if (i % 10 == 9) printf("\n");
}
printf("};\n");
This will produce output with 10 elements per line:
Vector alpha = {0.000000, 1.000000, 4.000000, 9.000000, 16.000000, 25.000000, 36.000000, 49.000000,64.000000, 81.000000, 6.000000, 9.000000, 12.000000, 15.000000, 18.000000, 21.000000, 24.000000, 27.000000, 30.000000,33.000000, 36.000000, 39.000000, 42.000000, 45.000000, 48.000000, 51.000000, 54.000000, 57.000000, 60.000000,63.000000, 72.000000, 75.000000, 78.000000, 81.000000, 84.000000, 87.000000, 90.000000, 93.000000, 96.000000,99.000000};
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For each of the functions below, use Karnaugh Maps to obtain both the minimal SOP and POS forms. Draw separate K-maps for the SOP and POS. Find and draw all prime implicants and identify which ones are essential. Give the number of gates and number of literals for your minimal SOP and POS expressions. a. (9 points) fix.yz.w)-Σ m10.4.6.8.9,15) + D(3.71 1,13)
The number of gates for the minimal SOP form is 3, and the number of literals is 7. The number of gates for the minimal POS form is also 3, and the number of literals is 10.
What is Karnaugh Maps?
To solve for the minimal SOP and POS forms using Karnaugh Maps, we first need to create K-maps for each term. For the given function, we have:
f(x,y,z,w) = Σm(10,4,6,8,9,15) + Πd(3,7,11,13)
From the K-maps, we can see that the following prime implicants exist:
We can also see that P1 and P4 are essential prime implicants for the SOP form, and P1 and P2 are essential prime implicants for the POS form.
The number of gates for the minimal SOP form is 3, and the number of literals is 7. The number of gates for the minimal POS form is also 3, and the number of literals is 10.
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answer this question
It is not raining or the wind is not blowing. The negation of this statement is saying that either it is not raining or the wind is not blowing, but not both.
What is wind?Wind is the movement of air caused by differences in atmospheric pressure. It is an important part of the Earth's climate system and is an essential factor in the transfer of heat energy from the sun to the Earth's surface. It is caused by the uneven heating of the Earth's surface by the sun. It is powered by the sun's energy and can travel long distances, carrying its energy with it.
Wind is an important part of many ecosystems, providing nutrients and moisture to plants and animals. It is also used as a source of power for sailing, windmills, and other renewable energy technologies.
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computer 1 on network c, with ip address of 172.16.1.57, wants to send a packet to computer 2, with ip address of 192.168.1.14. taking in consideration that computer 1 is sending a request to a web server on computer 2, listening on port 80, and the source port on computer 1 is 5000, which of the following contains the correct information for the fourth tcp segment of data?A. Source Port: 8081Destination Port: 50Sequence Number: 4 Acknowledgment Number: 1B. Source Port: 5000Destination Port: 80Sequence Number: 1Acknowledgment Number: 2C. Source Port: 5000Destination Port: 80Sequence Number: 4Acknowledgment Number: 2
The correct option is B. Source Port: 5000Destination Port: 80Sequence Number: 1Acknowledgment Number: 2
When sending a request to a web server, the source port is usually set to a number greater than 1023, and port 80 is used as the destination port. In this case, the source port on Computer 1 is 5000, and the web server on Computer 2 is listening on port 80. The sequence number indicates the byte number of the first data byte in the segment, and the acknowledgment number indicates the next expected byte from the other side.
Option A has the wrong source and destination ports, and the sequence number and acknowledgment number values are unlikely. Option C has the correct source and destination ports, but the sequence and acknowledgment number values are incorrect. Option B has the correct source and destination ports, and the sequence and acknowledgment number values make sense. Therefore, Option B is the correct answer.
The correct information for the fourth TCP segment of data is:
Source Port: 5000
Destination Port: 80
Sequence Number: 1
Acknowledgment Number: 2
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Which of the following methods correctly removes duplicate words (repeated one after another) from an ArrayList? (You may assume the ArrayList is sorted alphabetically.)
I. public static void removeDuplicate(ArrayList li) { int i = 0;
for (String s : li) { if (s == li.get(i)) {
li.remove(i);
i++;
}
}
}
II. public static void removeDuplicate(ArrayList li) { for (int i = 1; i < li.size(); i++) { if (li.get(i).equals(li.get(i-1))) {
li.remove(i - 1);
}
}
}
III. public static void removeDuplicate(ArrayList li) { for (int i = li.size()-2; i >= 0; i--) { if (li.get(i).equals(li.get(i+1))) {
li.remove(i + 1);
}
}
}
III only
II only
I and II
I only
I, II and III
The correct method that removes duplicate words (repeated one after another) from an ArrayList is II. The correct option is B.
What is array?An "array" is a data structure used in computer science that holds a set of elements, each of which is identified by an index or a key.
A contiguous block of memory called an array is made up of a certain number of identically typed items.
The index or key that corresponds to an element's location in the array can be used to access and manipulate that element.
Option II iterates through the ArrayList using a for loop, comparing each member to the one before it using the equals method.
The previous entry is eliminated from the ArrayList using the remove function if the items are equal.
The order of the remaining elements is preserved while the duplicate words are correctly removed from the ArrayList using this method.
Thus, the correct option is B.
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next, modify the method from the previous question (including its name) to determine how many of the odd numbers are also prime. once the number of odd numbers is determined, calculate the percentage of all the numbers in range that are prime and print the percentage. in the previous example the range went from 0 to 5 (a total of 6 values) and that range contained two odd numbers that are also prime (3 and 5 are prime, 0 and 1 are not prime) therefore the method would print a message stating that 33% (i.e., 2/6) of the numbers are prime. be sure to include the method in a fully functioning class named main.
Here is a Java example of how to implement the changed method:[Given below]
Describe Java.Millions of devices, including laptops, smartphones, gaming consoles, medical equipment, and many more, employ the object-oriented scripting language and software system known as Java. Java's syntax and principles are derived from the languages C and C++ languages.
public class Main {
public static void main(String[] args) {
int rangeStart = 0;
int rangeEnd = 5;
int oddPrimesCount = 0;
for (int i = rangeStart; i <= rangeEnd; i++) {
if (i % 2 != 0 && isPrime(i)) {
oddPrimesCount++;
}
}
int totalNumbers = rangeEnd - rangeStart + 1;
double percentage = ((double) oddPrimesCount / totalNumbers) * 100;
System.out.println(percentage + "% of the numbers are odd and prime.");
}
private static boolean isPrime(int number) {
if (number <= 1) {
return false;
}
for (int i = 2; i <= Math.sqrt(number); i++) {
if (number % i == 0) {
return false;
}
}
return true;
}
}
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Consider the following class declaration.
public class Circle
{
private double radius;
public double computeArea()
{
private double pi = 3.14159;
public double area = pi radius radius;
return area;
}
// Constructor not shown.
}
Which of the following best explains why the computeArea method will cause a compilation error?
The computeArea method is attempting to declare a local variable "pi" using the "private" access modifier, which limits its visibility to only within the computeArea method.
This is not allowed because local variables cannot have access modifiers. When the area calculation attempts to use the pi variable, it will cause a compilation error because pi is not visible outside of the computeArea method. To fix this issue, the "private" keyword should be removed from the pi variable declaration within the computeArea method. This will allow pi to be accessed outside of the method for use in the area calculation. Alternatively, the pi variable could be declared as a static member of the Circle class, which would allow it to be accessed by all Circle objects. The computeArea method is attempting to declare a local variable "pi" using the "private" access modifier, which limits its visibility to only within the computeArea method.
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Help me with my C++ code (repost because I forgot to include the whole code)! I've tried different options to try to solve this, but nothing I've come up with so far worked.
Instructions: Complete the HonkHorn() function to output the car model.
If the car model is:
Honda Civic
the HonkHorn() function outputs:
The Honda Civic says beep beep!
Code option 1 that FAILED:
void FancyCar::HonkHorn() {
if (car_model == "Honda Civic") {
cout << "The Honda Civic says beep beep!" << endl;
}
}
Code option 2 that FAILED:
void FancyCar::HonkHorn() {
if (car_model == "Honda Civic") {
cout << "The Honda Civic says beep beep!" << endl;
}
else {
cout << "Beep beep!" << endl;
}
}
This is an example of what the failed test output looks like:
Test feedback
HonkHorn() incorrectly outputted: Beep beep!
File -
#include "FancyCar.h"
FancyCar::FancyCar() : miles_driven(5), gallons_of_gas(14.0), miles_per_gallon(24.0), driving_capacity(14.0), car_model("Old Clunker"), engine_on(false) { //Update the constructors to start with the engine off
}
FancyCar::FancyCar(string carMake, double carMpg) : miles_driven(5), gallons_of_gas(14.0), miles_per_gallon(carMpg), driving_capacity(14.0), car_model(carMake), engine_on(false) { //Update the constructors to start with the engine off
}
// Return car model
string FancyCar::GetModel() {
return car_model;
}
// Return miles per gallon (MPG)
double FancyCar::GetMPG() {
return miles_per_gallon;
}
// Return miles on odometer
int FancyCar::CheckOdometer() {
return miles_driven;
}
// Return amount of gas in tank
double FancyCar::CheckGasGauge() {
return gallons_of_gas;
}
// Honk horn
void FancyCar::HonkHorn() {
//type code here
}
// Drive car requested miles but check for enough
// gas and check for positive value
void FancyCar::Drive(int milesToDrive) {
if (engine_on && milesToDrive > 0) { //Update the Drive() function to identify if the car runs out of gas
double maxDistance = miles_per_gallon * gallons_of_gas;
if (milesToDrive <= maxDistance) {
miles_driven += milesToDrive;
gallons_of_gas -= milesToDrive / miles_per_gallon;
} //Update the Drive() function to only update private members if the engine is on, and the engine turns off if the car runs out of gas
else {
miles_driven += maxDistance;
gallons_of_gas = 0.0;
engine_on = false;
}
}
}
// Add gas to tank. Check for positive value.
void FancyCar::AddGas(double amtToAdd) {
if (!engine_on && amtToAdd > 0) { //Update the AddGas() function to only add gas if the engine is off
gallons_of_gas += amtToAdd;
if (gallons_of_gas > driving_capacity) {
gallons_of_gas = driving_capacity;
}
}
}
// Set boolean variable to true
void FancyCar::StartEngine() {
engine_on = true; //Complete the StartEngine() function to set the boolean variable to true
}
// Set boolean variable to false
void FancyCar::StopEngine() {
engine_on = false; //Complete the StopEngine() function to set the boolean variable to false
}
Explanation:
if I did not miss anything, I could only see that the variable "car_model" is initiated by the string "Old Clunker".
I see a function to get the value from the variable.
but I see no code to change the value of the variable.
so, it keeps containing "Old Clunker".
in your function you check if the variable contains "Honda Civic". that check fails, because both strings are different, and so you always either miss the print inside the if-statement or go through the "else" branch.
if there is no way to set the variable to "Honda Civic", this behavior will not change.
you need a function that sets/changes the car_model. or you change the initial string from "Old Clunker" to "Honda Civic" in the code.