Computers And Technology College

Coupon collector is a classic statistic problem with many practical applications. The problem is to pick objects from a set of objects repeatedly and determine how many picks are needed for all the objects to be picked at least once. A variation of the problem is to pick cards from a shuffled deck of 52 cards repeatedly and find out how many picks are needed before you see one of each suit. Assume a picked card is placed back in the deck before picking another. Write a program to simulate the number of picks needed to get total of four cards from each different suit and display the four cards picked (it is possible that a card may be picked twice). Here is a sample run of the program:
4 of Diamonds
8 of Spades
Queen of Clubs
8 of Hearts
Number of picks: 9

Answers

Answer 1

Answer:

Here is the JAVA program:

public class Main { //class name

public static void main(String[] args) { //start of main method

//sets all boolean type variables spades, hearts diamonds and clubs to false initially

boolean spades = false;

boolean hearts = false;

boolean diamonds = false;

boolean clubs = false;

String[] deck = new String[4]; //to store card sequence

int index = 0; //to store index position

int NoOfPicks = 0; //to store number of picks (picks count)

while (!spades || !hearts || !diamonds || !clubs) { //loop starts

String card = printCard(getRandomCard()); //calls printCard method by passing getRandomCard method as argument to it to get the card

NoOfPicks++; //adds 1 to pick count

if (card.contains("Spades") && !spades) { //if that random card is a card of Spades and spades is not false

deck[index++] = card; //add that card to the index position of deck

spades = true; //sets spades to true

} else if (card.contains("Hearts") && !hearts) { //if that random card is a card of Hearts and hearts is not false

deck[index++] = card;

hearts = true; //sets hearts to true

} else if (card.contains("Diamond") && !diamonds) { //if that random card is a card of Diamond and diamonds is not false

deck[index++] = card;

diamonds = true; //sets diamonds to true

} else if (card.contains("Clubs") && !clubs) { if that random card is a card of Clubs and clubs is not false

deck[index++] = card;

clubs = true; } } //sets clubs to true

for (int i = 0; i < deck.length; i++) { //iterates through the deck i.e. card sequence array

System.out.println(deck[i]); } //prints the card number in deck

System.out.println("Number of picks: " + NoOfPicks); } //prints number of picks

public static int getRandomCard() { //gets random card

return (int) (Math.random() * 52); } //generates random numbers of 52 range

public static String printCard(int cardNo) { //displays rank number and suit

String[] suits = { "Spades", "Hearts", "Diamonds", "Clubs", }; //array of suits

String[] rankCards = { "Ace", "2", "3", "4", "5", "6", "7", "8", "9", "10",

"Jack", "Queen", "King" }; //array of rank

int suitNo = cardNo / 13; //divides card number by 13 and stores to suitNo

int rankNo = cardNo % 13; //takes modulo of card number and 13 and store it to rankNo

return rankCards[rankNo] + " of " + suits[suitNo]; }} //returns rankCard at rankNo index and suits at suitNo index

Explanation:

The program is explained in the comments attached with each line of code. The screenshot of the program along with its output is attached.

Coupon Collector Is A Classic Statistic Problem With Many Practical Applications. The Problem Is To Pick

Related Questions

Could we represent every possible number with flippy do pro ?

Answers

Answer:

better with pro dud

Explanation:

.....helps??...

المساعد للWhat property of a metal describes its ability to be easily drawn into
a wire but not rolled into a sheet without splitting? iww.

Answers

Answer:

Ductility

Explanation:

A program is written to compute the sum of the integers from 1 to 10. The programmer, well trained in reusability and maintainability, writes the program so that it computes the sum of the numbers from k to n. However, a team of security specialists scrutinizes the code. The team certifies that this program properly sets k to 1 and n to 10; therefore, the program is certified as being properly restricted in that it always operates on precisely the range 1 to 10.

Required:
List different ways that this program can be sabotaged so that during execution it computes a different sum, such as 3 to 20.

Answers

Answer:

See explanation

Explanation:

An instance of such program written in python is

isum = 0

for i in range(1,11):

isum = isum + i

print(sum)

One of the ways the program can give a wrong result is when someone alters the program source program before it's complied and executed.

Take for instance.

Changing

isum = 0 to isum = 4

will alter the result by additional 4

Another way is if an outside program or process alters the program execution.

The global communication network that allows computers to connect and pass through information is called?

Answers

Answer: Internet

Explanation:

Answer:

The Internet.

Explanation:

In which setting would you be least likely to find a full-time A/V technician?

A.) stadium

B.) concert hall

B.) restaurant

D.) school

Answers

Answer: resturant

Explanation: Resturants are about making food, not about making electric. The answer to the question is resturant.

Hope this helps!

two page essay on an emerging technology.. plzzzzz help

Answers

Answer:

hope i get brainliest

Explanation:

Emerging Technologies

Abstract

The purpose of this paper is to summarize the advantages of computers/software and the use of computer technology in investigations. Summarize the disadvantages to law enforcement with respect to the advancements of computers. Real cases will be researched in order to understand how computers can be utilized in criminal activities, as well as a case that the use of a computer was beneficial to the prosecution in a criminal case. A final conclusion paragraph will address my personal subjective opinion as to whether these technologies, in an overall sense are a benefit or hindrance to law enforcement efforts.

Introduction

Since computers have become such a big part of our…show more content…

From utilizing computers in cars so officers could run a license plate and social security number to see if there are any warrants out for the person they stopped, to more advances such as carrying cell phones, GPS tracking systems in cars, crime mapping tools, information sharing between state and local law enforcement, to even sharing information across countries. Technology has come a long way in helping officers and other agents within the criminal justice system do their job.

Just a bit more about the advantages of the things mentioned above and time to move on. The most interesting thing is Geographic Information Systems (GIS), which has become a most important tool for law enforcement agencies. GIS, other mapping software and desktop computers now are capable of mapping and data analysis that is way above and beyond what used to be possible with backroom mainframe computers (Rubley, 2011).

Another great advancement is the widespread use of everyone using mobile devices. Many officers now use two to three cell phones.

PLEASE HURRY!!
Look at the image below!

Answers

The missing word is input. The input function asks the user to enter something and in this case, its asking for the user to enter the x-coordinate of the first point.

Create a class named FormLetterWriter that includes two overloaded methods named displaySalutation(). The first method takes one String parameter that represents a customer's last name, it displays the salutation "Dear Mr. or Ms." followed by the last name. The second method accepts two String parameters that represent a first and last name, and it displays the greeting "Dear" followed by the first name, a space, and the last name. After each salutation, display the rest of a short business letter: "Thank you for your recent order." Write a main() method that tests each overloaded method. Save the file as FormLetterWriter.java.

Answers

Answer:

Follows are the code to this question:

public class FormLetterWriter//defining class

{

static void displaySalutation(String last_Name)//defining a method displaySalutation

{

System.out.println("Dear Mr. or Ms. " + last_Name);//print value

}

static void displaySalutation(String first_Name, String last_Name) //overload the method displaySalutation

{

System.out.println("Dear " + first_Name + " " + last_Name);//print value

}

public static void message()//defining a method message

{

System.out.println("Thank you for your recent order.");//print message

}

public static void main(String[] args) //defining main method

{

displaySalutation("I Kell");//calling a method displaySalutation by passing a single String value

message();//calling message method

displaySalutation("Christ", "John");//calling a method displaySalutation by passing a two String value

message();//calling message method

}

Output:

please find the attached file.

Explanation:

In the above given program a calss "FormLetterWriter" is defined, in side the class we perform the method overloading, in which a method "displaySalutation" is used in first definition it accepts a single string variable "first_Name", and in second time, it accept two string variable " first_Name and last_Name".

Inside the both method, we use print method, that print its value, and an onther method message is defined, that print the given message.

In the class main method is declared, in which we apply mathod overloading and also call the message method for print the given business letter.

What lets you do many things, like write book reports and stories?

Answers

Applicant programs? Is that an option. If not try operating systems

As a twist on the Hello World exercise, you are going to be the end user of the Hello class. This class is designed to greet the user in a variety of world languages. For this task, complete the following:
Use the Scanner class to ask the user for their name.
Create a Hello object by passing the name to the constructor.
Call at least 3 methods from the Hello class to print the greeting in 3 different languages.
Remember to write your code in the HelloTester class, but make sure you take a look at the Hello class so that you know the names of the methods you need to use.

Answers

Answer:

Here is the Hello class:

public class Hello { //class name

private String name; //to store the name

public Hello (String names) //parameterized constructor

{ name = names; }

public void English() { //method to greet user in english

System.out.print("Hello "); //displays Hello on output screen

System.out.print(name); //displays user name

System.out.println("!"); } //displays exclamation mark symbol

public void Spanish(){ //method to greet user in spanish

System.out.print("Hola "); //displays Hello on output screen

System.out.print(name); //displays user name

System.out.println("!"); } //displays exclamation mark symbol

public void French() { //method to greet user in french

System.out.print("Bonjour "); //displays Hello on output screen

System.out.print(name); //displays user name

System.out.println("!"); } } //displays exclamation mark symbol

Explanation:

Here is the HelloTester class:

import java.util.Scanner; //to accept input from user

public class HelloTester { //class name

public static void main (String[]args) { //start of main method

String name; //to store the name of user

Scanner input = new Scanner(System.in); //creates Scanner class object

System.out.println("Enter name?" ); //prompts user to enter name

name = input.nextLine(); //scans and reads the name from user

Hello hello = new Hello(name); //creates Hello class object and calls constructor by passing name

hello.English(); //calls English method using object hello to greet in english

hello.Spanish(); //calls Spanish method using object hello to greet in spanish

hello.French(); } } //calls French method using object hello to greet in french

The output of the program is:

Enter name? user Hello user! Hola user! Bonjour user!

The screenshot of the program along with its output is attached.

Java Program:

Java is one of the most popular programming languages that is being widely used in the IT industry. It is simple, robust, and helps us to reuse the code.

The required program is,

\\import java.util.Scanner;

class Hello

{

private String name;

public Hello(String yourName)

{

name=yourName;

}

public void english()

{

System.out.print("Hello ");

System.out.print(name);

System.out.println("!");

}

public void spanish()

{

System.out.print("Holla ");

System.out.print(name);

System.out.println("!");

}

public void french()

{

System.out.print("Bonjour ");

System.out.print(name);

System.out.println("!");

}

public void german()

{

System.out.print("Hallo ");

System.out.print(name);

System.out.println("!");

}

public void russian()

{

System.out.print("Privet ");

System.out.print(name);

System.out.println("!");

}

public void chinese()

{

System.out.print("Ni hao ");

System.out.print(name);

System.out.println("!");

}

public class HelloTester

{

public static void main(String[] args)

{

Scanner input=new Scanner(System.in);

String name;

//Accepting the name

System.out.print("\nEnter your name: ");

name=input.next();

/creating an object of Hello class

Hello hello=new Hello(name);

System.out.println("\nGreeting in English: ");