Question

In: Computer Science

please I don't understand this code. Can you put comments to explain the statements. Also, if...

please I don't understand this code. Can you put comments to explain the statements. Also, if there any way to rewrite this code to make it easier, that gonna help me a lot.


import java.io.*;
import java.util.*;
public class State {
  
private int citi1x,citi1y;
private int pop1;
private int citi2x,citi2y;
private int pop2;
private int citi3x,citi3y;
private int pop3;
private int citi4x,citi4y;
private int pop4;
private int plantx,planty;
public int getCity1X(){
return citi1x;
}
public int getCity1Y(){
return citi1y;
}
public int getCity2X(){
return citi2x;
}
public int getCity2Y(){
return citi2y;
}
public int getCity3X(){
return citi3x;
}
public int getCity3Y(){
return citi3y;
}
public int getCity4X(){
return citi4x;
}
public int getCity4Y(){
return citi4y;
}
public void setCity1(int a, int b){
citi1x = a;
citi1y = b;
}
public void setCity2(int a, int b){
citi2x = a;
citi2y = b;
}
public void setCity3(int a, int b){
citi3x = a;
citi3y = b;
}
public void setCity4(int a, int b){
citi4x = a;
citi4y = b;
}
public void setPop1(int a){
pop1 = a;
}
public void setPop2(int a){
pop2 = a;
}
public void setPop3(int a){
pop3 = a;
}
public void setPop4(int a){
pop4 = a;
}
public int getPop1(int a){
return pop1;
}
public int getPop2(int a){
return pop2;
}
public int getPop3(int a){
return pop3;
}
public int getPop4(int a){
return pop4;
}
public int getPlantX(){
return plantx;
}
public int getPlantY(){
return planty;
}
public void setPlantX(int a){
plantx = a;
}
public void setPlantY(int a){
planty = a;
}
public void read_input(){
int x,y;
int pop;
Scanner sc = new Scanner(System.in);
do {
System.out.print("Enter X and Y for city 1: ");
x = sc.nextInt();
y = sc.nextInt();
} while ((x < 1 || x > 25) && (y < 1 && y > 25));
setCity1(x,y);
System.out.print("Enter population for city 1: ");
pop = sc.nextInt();
setPop1(pop*1000);
do {
System.out.print("Enter X and Y for city 2: ");
x = sc.nextInt();
y = sc.nextInt();
} while ((x < 1 || x > 25) && (y < 1 && y > 25));
setCity2(x,y);
System.out.print("Enter population for city 2: ");
pop = sc.nextInt();
setPop2(pop*1000);

do {
System.out.print("Enter X and Y for city 3: ");
x = sc.nextInt();
y = sc.nextInt();
} while ((x < 1 || x > 25) && (y < 1 && y > 25));
setCity3(x,y);
System.out.print("Enter population for city 3: ");
pop = sc.nextInt();
setPop3(pop*1000);
do {
System.out.print("Enter X and Y for city 4: ");
x = sc.nextInt();
y = sc.nextInt();
} while ((x < 1 || x > 25) && (y < 1 && y > 25));
setCity4(x,y);
System.out.print("Enter population for city 4: ");
pop = sc.nextInt();
setPop4(pop*1000);
  
}

public void calc_plant(){

double min = 100000;
for (int i = 1; i<=25; i++){
  
for (int j = 1; j<=25; j++){
  
double unhappy1 = 0;
double unhappy2 = 0;
double unhappy3 = 0;
double unhappy4 = 0;
  
if ((i == citi1x && j == citi1y) || (i == citi2x && j == citi2y) || (i == citi3x && j == citi3y) || (i == citi4x && j == citi4y))
continue;
double dist = Math.sqrt((i-citi1x)*(i-citi1x) + (j-citi1y)*(j-citi1y));
if (dist <= 2){
unhappy1 = 10000000;
}
else {
unhappy1 = pop1/dist;
}
dist = Math.sqrt((i-citi2x)*(i-citi2x) + (j-citi2y)*(j-citi2y));
if (dist <= 2){
unhappy2 = 1000000;
}
else {
unhappy2 = pop2/dist;
}
dist = Math.sqrt((i-citi3x)*(i-citi3x) + (j-citi3y)*(j-citi3y));
if (dist <= 2){
unhappy3 = 1000000;
}
else {
unhappy3 = pop3/dist;
}
dist = Math.sqrt((i-citi4x)*(i-citi4x) + (j-citi4y)*(j-citi4y));
if (dist <= 2){
unhappy4 = 1000000;
}
else {
unhappy4 = pop4/dist;
}
double unhappy = (unhappy1 + unhappy2 + unhappy3 + unhappy4)/(pop1+pop2+pop3+pop4);
  
if (unhappy < min){
min = unhappy;
plantx = i;
planty = j;

}
}
}
  
}
  
public void display_map(){
for (int i = 1; i <=25; i++){
for (int j = 1; j <=25; j++){
if (i == citi1x && j == citi1y)
System.out.print("C1");
else if (i == citi2x && j == citi2y)
System.out.print("C2");
else if (i == citi3x && j == citi3y)
System.out.print("C3");
else if (i == citi4x && j == citi4y)
System.out.print("C4");
else if (i == plantx && j == planty)
System.out.print("PP");
else
System.out.print("<>");
}
System.out.println();
}
System.out.println();
}


}

import java.util.Scanner;

public class StatePlant {
   public static void main(String[] args){
  
   Scanner sc = new Scanner(System.in);
   State s = new State();
   s.read_input();
   s.calc_plant();
   System.out.println("Locate the plan at : " + s.getPlantX() + " " +s.getPlantY() );
   System.out.println("Enter 1 to view a Map of the scenario, or 0 to exit:");
   String inp = sc.nextLine();
   if (inp.charAt(0) == '1'){
   s.display_map();
   }
  
   }
}

Solutions

Expert Solution

Java code with comments

============================================================================================

//StatePlant.java

import java.util.Scanner;

public class StatePlant {
public static void main(String[] args){
  
   //scanner class object for taking input from keyboard
Scanner sc = new Scanner(System.in);
//state class object
State s = new State();
//input from user

s.read_input();
//plant calculate
s.calc_plant();
System.out.println("Locate the plan at : " + s.getPlantX() + " " +s.getPlantY() );
System.out.println("Enter 1 to view a Map of the scenario, or 0 to exit:");
String inp = sc.nextLine(); //input from user
if (inp.charAt(0) == '1'){
s.display_map(); //display map() call
}
  
}
}

============================================================================================

//State.java

import java.io.*;

import java.util.*;
public class State {
  
   //instance variable declare
private int citi1x,citi1y;
private int pop1;
private int citi2x,citi2y;
private int pop2;
private int citi3x,citi3y;
private int pop3;
private int citi4x,citi4y;
private int pop4;
private int plantx,planty;

//getter for each varible
public int getCity1X(){
return citi1x;
}
public int getCity1Y(){
return citi1y;
}
public int getCity2X(){
return citi2x;
}
public int getCity2Y(){
return citi2y;
}
public int getCity3X(){
return citi3x;
}
public int getCity3Y(){
return citi3y;
}
public int getCity4X(){
return citi4x;
}
public int getCity4Y(){
return citi4y;
}
public int getPop1(int a){
return pop1;
}
public int getPop2(int a){
return pop2;
}
public int getPop3(int a){
return pop3;
}
public int getPop4(int a){
return pop4;
}
public int getPlantX(){
return plantx;
}
public int getPlantY(){
return planty;
}


// setter for each variable
public void setCity1(int a, int b){
citi1x = a;
citi1y = b;
}
public void setCity2(int a, int b){
citi2x = a;
citi2y = b;
}
public void setCity3(int a, int b){
citi3x = a;
citi3y = b;
}
public void setCity4(int a, int b){
citi4x = a;
citi4y = b;
}
public void setPop1(int a){
pop1 = a;
}
public void setPop2(int a){
pop2 = a;
}
public void setPop3(int a){
pop3 = a;
}
public void setPop4(int a){
pop4 = a;
}
public void setPlantX(int a){
plantx = a;
}
public void setPlantY(int a){
planty = a;
}

//read_input() function defination
public void read_input(){
   //local variable declare
int x,y;
int pop;
//scanner class object for taking input from keyboard
Scanner sc = new Scanner(System.in);

//input valid point from user by using loop for city 1
do {
System.out.print("Enter X and Y for city 1: ");
x = sc.nextInt();
y = sc.nextInt();
} while ((x < 1 || x > 25) && (y < 1 && y > 25));

//set point for city 1
setCity1(x,y);

//input population for city 1
System.out.print("Enter population for city 1: ");
pop = sc.nextInt();
setPop1(pop*1000);

//input valid point from user by using loop for city 2
do {
System.out.print("Enter X and Y for city 2: ");
x = sc.nextInt();
y = sc.nextInt();
} while ((x < 1 || x > 25) && (y < 1 && y > 25));

//set point for city 2
setCity2(x,y);

//input population for city 2
System.out.print("Enter population for city 2: ");
pop = sc.nextInt();
setPop2(pop*1000);


//input valid point from user by using loop for city 3
do {
System.out.print("Enter X and Y for city 3: ");
x = sc.nextInt();
y = sc.nextInt();
} while ((x < 1 || x > 25) && (y < 1 && y > 25));

//set point for city 3
setCity3(x,y);

//input population for city 3
System.out.print("Enter population for city 3: ");
pop = sc.nextInt();
setPop3(pop*1000);

//input valid point from user by using loop for city 4
do {
System.out.print("Enter X and Y for city 4: ");
x = sc.nextInt();
y = sc.nextInt();
} while ((x < 1 || x > 25) && (y < 1 && y > 25));

//set point for city 4
setCity4(x,y);

//input population for city 4
System.out.print("Enter population for city 4: ");
pop = sc.nextInt();
setPop4(pop*1000);
  
}
//plant calculate
public void calc_plant(){

double min = 100000;
//nested for loop
for (int i = 1; i<=25; i++){
  
for (int j = 1; j<=25; j++){
  
double unhappy1 = 0;
double unhappy2 = 0;
double unhappy3 = 0;
double unhappy4 = 0;
//if condtion
if ((i == citi1x && j == citi1y) || (i == citi2x && j == citi2y) || (i == citi3x && j == citi3y) || (i == citi4x && j == citi4y))
continue;
double dist = Math.sqrt((i-citi1x)*(i-citi1x) + (j-citi1y)*(j-citi1y));
//nested if else
if (dist <= 2){
unhappy1 = 10000000;
}
else {
unhappy1 = pop1/dist;
}
dist = Math.sqrt((i-citi2x)*(i-citi2x) + (j-citi2y)*(j-citi2y));
if (dist <= 2){
unhappy2 = 1000000;
}
else {
unhappy2 = pop2/dist;
}
dist = Math.sqrt((i-citi3x)*(i-citi3x) + (j-citi3y)*(j-citi3y));
if (dist <= 2){
unhappy3 = 1000000;
}
else {
unhappy3 = pop3/dist;
}
dist = Math.sqrt((i-citi4x)*(i-citi4x) + (j-citi4y)*(j-citi4y));
if (dist <= 2){
unhappy4 = 1000000;
}
else {
unhappy4 = pop4/dist;
}
double unhappy = (unhappy1 + unhappy2 + unhappy3 + unhappy4)/(pop1+pop2+pop3+pop4);
  
if (unhappy < min){
min = unhappy;
plantx = i;
planty = j;

}
}
}
  
}
//display map() function
public void display_map(){
   //nested for loop
for (int i = 1; i <=25; i++){
for (int j = 1; j <=25; j++){
   //nested if else block
if (i == citi1x && j == citi1y)
System.out.print("C1");
else if (i == citi2x && j == citi2y)
System.out.print("C2");
else if (i == citi3x && j == citi3y)
System.out.print("C3");
else if (i == citi4x && j == citi4y)
System.out.print("C4");
else if (i == plantx && j == planty)
System.out.print("PP");
else
System.out.print("<>");
}
System.out.println();
}
System.out.println();
}


}

============================================================================================

output


Related Solutions

Can someone please explain these problems, I don't understand, please and thank you!! The patients in...
Can someone please explain these problems, I don't understand, please and thank you!! The patients in the Digoxin trial dataset can be considered a population of people suffering from heart failure. These patients were examined before the drug trial began, and their heart rate and blood pressure were recorded. The mean and standard deviation of the variables are listed below. Each variable follows a normal distribution. Heart rate (beats/min)                          μ = 78.8            σ = 12.66 Systolic blood pressure (mmHg)             μ...
write this program in java... don't forget to put comments. You are writing code for a...
write this program in java... don't forget to put comments. You are writing code for a calendar app, and need to determine the end time of a meeting. Write a method that takes a String for a time in H:MM or HH:MM format (the program must accept times that look like 9:21, 10:52, and 09:35) and prints the time 25 minutes later. For example, if the user enters 9:21 the method should output 9:46 and if the user enters 10:52...
Also please add comments on the code and complete in C and also please use your...
Also please add comments on the code and complete in C and also please use your last name as key. The primary objective of this project is to increase your understanding of the fundamental implementation of Vigenere Cipher based program to encrypt any given message based on the Vignere algorithm. Your last name must be used as the cipher key. You also have to skip the space between the words, while replicating the key to cover the entire message. Test...
Understand the code and explain the code and answer the questions. Type your answers as comments....
Understand the code and explain the code and answer the questions. Type your answers as comments. #include #include using namespace std; // what is Color_Size and why it is at the end? enum Color {        Red, Yellow, Green, Color_Size }; // what is Node *next and why it is there? struct Node {        Color color;        Node *next; }; // explain the code below void addNode(Node* &first, Node* &last, const Color &c) {        if (first == NULL)...
Please solve and explain all parts. I don't understand You decide to play a trick on...
Please solve and explain all parts. I don't understand You decide to play a trick on your friend by dropping a raw egg onto their head The egg is dropped (no initial velocity) from a height of 15 meters. Your goal is to have the y position of the egg exactly match the height of your friend at the same moment he steps onto the red x you painted on the ground (not suspicious at all). Your friend has a...
please can you write the calc_plant method in another way, I don't understand way they assign...
please can you write the calc_plant method in another way, I don't understand way they assign these specific numbers to min, unhappy1...4. the question says if the plant is within two miles or less of a city, the unhappiness is infinite (that is, assign a very large number to the unhappiness for that city). 2) Otherwise, the unhappiness is equal to the population of the city divided by the distance of the plant from the city. The average unhappiness equals:...
**please put the solution in easy to understand letters because I also want to learn how...
**please put the solution in easy to understand letters because I also want to learn how to solve it, thanks 1) On a particular production line, the likelihood that a light bulb is defective is 10%. Seven light bulbs are randomly selected. What is the probability that at most 4 of the light bulbs will be defective? 2) Patients scheduled to see their primary care physician at a particular hospital wait, on average, an additional seven minutes after their appointment...
Hi, I have the answers, but I don't understand how to get the answers. Please explain...
Hi, I have the answers, but I don't understand how to get the answers. Please explain thoroughly. Bob earns ($25,000) in passive losses from BHI partnership. He has an outside basis of $40,000 of which $30,000 comes from non-recourse debt, and he has passive income of $50,000. What are the tax consequences to Bob? $10,000 deductible loss What basis does Bob take in his partnership interest? $15,000 How much is Bob at-risk after the allocation? 0 How much, if any...
This is a python program. Put comments explaining the code, please. Suppose you have been tasked...
This is a python program. Put comments explaining the code, please. Suppose you have been tasked with writing a Python program (using linked lists) to keep track of computer equipment. For each piece of equipment, we track its name, purchase date, purchase amount, and quantity on hand. Write a program that completes the following tasks: allow the user to add a piece of equipment to the front of the list; allow the user to update the quantity of a piece...
can you please explain to me in simplest way that i can understand the cyert and...
can you please explain to me in simplest way that i can understand the cyert and march behaviour theory. kindly give an example for it. thank you so much.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT