1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ivanshal [37]
2 years ago
12

Create a Rational number class in Java using the same style as the Complex number class created in class.(The in class example c

ode is below) That is, implement the following methods:constructoradd submuldivtoStringYou must also provide a Main class and main method to fully test your Rational number class.Example code:public class Main { public static void main(String[] args) { Complex a = new Complex(2.0, 3.0); Complex b = new Complex(1.0, 2.0); System.out.println(a + " + " + b + " = " + a.add(b)); System.out.println(a + " - " + b + " = " + a.sub(b)); System.out.println(a + " * " + b + " = " + a.mul(b)); System.out.println(a + " / " + b + " = " + a.div(b)); }}class Complex { public Complex(double re, double im) { real = re; imag = im; } public Complex add(Complex o) { return new Complex(real + o.real, imag + o.imag); } private Complex conjugate() { return new Complex(real, -imag); } public Complex div(Complex o) { Complex top = mul(o.conjugate()); Complex bot = o.mul(o.conjugate()); return new Complex(top.real / bot.real, top.imag / bot.real); } public Complex mul(Complex o) { return new Complex(real * o.real - imag * o.imag, real * o.imag + imag * o.real); } public Complex sub(Complex o) { return new Complex(real - o.real, imag - o.imag); } public String toString() { return "(" + real + " + " + imag + "i)"; } private double real; private double imag;}
Computers and Technology
1 answer:
Elis [28]2 years ago
6 0

Answer:

Explanation:

/*

*    This program adds, subtracts, multiplies, and divides two rational numbers.

*/

public class Main {

  //Main method

   public static void main(String[] args) {

       Rational a = new Rational(3, 4);   // input for first rational number

       Rational b = new Rational(2 , 5);   // input for second rational number

       System.out.println(a + " + " + b + " = " + a.add(b));

       System.out.println(a + " - " + b + " = " + a.sub(b));

       System.out.println(a + " * " + b + " = " + a.mul(b));

       System.out.println(a + " / " + b + " = " + a.div(b));

   }

}

class Rational {

   public Rational(int num, int den) {

      numerator = num;

      denominator = den;

     

      //ensures a non-zero denominator

      if (den == 0)

          den =1;

     

      //stores a negative sign in numerator

      if (den < 0) {

          num = num * -1;

          den = den * -1;

      }

   }

   //return numerator

   public int getNumerator() {

     

      return numerator;

   }

 

   //return denominator

   public int getDenominator() {

     

      return denominator;

   }

 

   //return reciprocal method

   public Rational reciprocal() {

     

      return new Rational(denominator, numerator);

   }

   /*   Addition Class

    *        Find common denominator by multiplying the denominators

    *        Store number values (numerator / common denominator) as num1 and num2

    *        Sum both numbers

    */

   public Rational add(Rational r2) {

      int comDen = denominator * r2.getDenominator();

      int num1 = numerator * r2.getDenominator();

      int num2 = r2.getNumerator() * denominator;

      int sum = num1 + num2;

      return new Rational (sum, comDen);

   }

   //Subtraction Class - same implementation as Addition Class

   public Rational sub(Rational r2) {

   

     int comDen = denominator * r2.getDenominator();

     int num1 = numerator * r2.getDenominator();

     int num2 = r2.getNumerator() * denominator;

     int difference = num1 - num2;

     return new Rational (difference, comDen);

  }

   

  /*   Multiplication Class

   *        Multiply numerator with r2 numerator

   *        Multiply denominator with r2 denominator

   */

  public Rational mul(Rational r2) {

   

     int num = numerator * r2.getNumerator();

     int den = denominator * r2.getDenominator();

     return new Rational (num, den);

  }

  /*   Divide Class

   *        Multiply number by r2 reciprocal

   */

  public Rational div(Rational r2) {

      return mul (r2.reciprocal());

  }

  /*   toString Method

   *        Returns rational number as a string - in parenthesis if a fraction

   */

  public String toString() {

     

      return (((numerator == 0) ? "0" : ( (denominator == 1) ? numerator + "": "(" + numerator + "/" + denominator + ")")));

 

      /* Logic for toString method

      * if (num == 0) {

              return "0";

          } else {

              if (denominator == 1){

                  return numerator;

              } else {

                  return numerator + "/" + denominator;

              }

      */

   }

  // Declare variables

  private int numerator, denominator;

 

}

output

(3/4) + (2/5) = (23/20)                                                                                                                                      

(3/4) - (2/5) = (7/20)                                                                                                                                      

(3/4) * (2/5) = (6/20)                                                                                                                                      

(3/4) / (2/5) = (15/8)                                                                                                                                      

You might be interested in
Write the include directive needed to allow use of the various i/o functions and values such fprintf and fgetc.
noname [10]

#include <stdio.h> //stdio stands for STanDard Input/Output

5 0
3 years ago
Define and implement a method that takes a string array as a parameter and returns the length of the shortest and the longest st
Drupady [299]

Answer:

#HERE IS CODE IN PYTHON

#function to find length of shortest and longest string in the array

def fun(list2):

   #find length of shortest string

   mn=len(min(list2))

   #find length of longest string

   mx=len(max(list2))

   #return both the value

   return mn,mx

#array of strings

list2 = ['Ford', 'Volvo', 'BMW', 'MARUTI','TATA']

# call the function

mn,mx=fun(list2)

#print the result

print("shortest length is:",mn)

print("longest length is:",mx)

Explanation:

Create an array of strings.Call the function fun() with array as parameter. Here min() function will find the minimum string among all the strings of array and then len() function will find its length and assign to "mn". Similarly max() will find the largest string and then len() will find its length and assign to "mx". Function fun() will return "mn" & "mx".Then print the length of shortest and longest string.

Output:

shortest length is: 3

longest length is: 5

7 0
3 years ago
After reviewing device security you learn that a malicious user in an airport
NARA [144]

Answer:

Sniffing.

Explanation:

Data theft can be defined as a cyber attack which typically involves an unauthorized access to a user's data with the sole intention to use for fraudulent purposes or illegal operations. There are several methods used by cyber criminals or hackers to obtain user data and these includes DDOS attack, SQL injection, man in the middle, phishing, sniffing, etc.

Sniffing can be defined as a form of cyber attack in which a malicious user gains access to a private network with the intent of finding out what information is stored on the network.

A packet sniffer also known as a packet analyzer, is a computer software or hardware tool that can be used to intercept, log and analyze network traffic and data that passes through a digital network.

Basically, an unauthorized packet sniffer is used to steal user informations.

This ultimately implies that, sniffing typically involves monitoring and capturing internet traffic (data packets) that are transmitted through a private network in real-time by using a sniffing tool, which may either be a hardware or software.

In this scenario, a malicious user in an airport terminal seating area was able to connect wirelessly to a traveling employee's smartphone and downloaded her contact list. Thus, the type of attack that has taken place is referred to as sniffing.

4 0
3 years ago
The collection of all component frequencies iscalled _____________
yKpoI14uk [10]

Answer:

The answer is Frequency Spectrum.

Explanation:

The frequency spectrum is range of all component frequencies.It contains all the waves which are as following:-

Gamma Rays

X-Rays

Ultraviolet

Visible light.

Infrared

Micro wave

Radio wave

These all waves have their range of frequencies.The waves that are visible to us is only the visible light.

4 0
3 years ago
Can someone please do this java lab for me (100 point version)? Heres the link: https://www.dropbox.com/sh/a639urhsggss051/AADdn
nlexa [21]

Answer:

não entendi DESCULPA kkkk

8 0
3 years ago
Other questions:
  • Write a recursive function that calculates if two binary trees are similar?
    14·1 answer
  • 1. What is the main factor that affects Earth’s average temperature?
    12·1 answer
  • What is wrong with my code?
    7·1 answer
  • Limitations of the information systems used by tesco​
    7·1 answer
  • Why are answers not appearing? I've seen many complain about this recently.
    8·1 answer
  • ICS facilitates the ability to communicate by using:
    7·1 answer
  • Please read !!!
    8·1 answer
  • What is the diffrent between ibm pc and ibm compatibles in table:​
    11·1 answer
  • Many bookstores have closed since the rise of the Internet. What type of
    11·1 answer
  • How to add links in HTML? ​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!