This exercise takes inputs of density, height and width and creates a random asterisks (star) field out of them.
My Code
Main
public class Main {
public static void main(String[] args) {
// Test your code here
NightSky NightSky = new NightSky(0.1);
NightSky.print();
System.out.println("Number of stars: " + NightSky.starsInLastPrint());
System.out.println("");
NightSky.print();
System.out.println("Number of stars: " + NightSky.starsInLastPrint());
}
}NightSky
import java.util.Random;
public class NightSky {
private double density;
private int width;
private int height;
private int starsInLastPrint;
public NightSky(double density) {
this.density = density;
this.width = 20;
this.height = 10;
}
public NightSky(int width, int height) {
this.density = 0.1;
this.width = width;
this.height = height;
}
public NightSky(double density, int width, int height) {
this.density = density;
this.width = width;
this.height = height;
}
public void printLine() {
for (int i = 0; i < this.width; i++) {
if (Math.random() >= this.density) {
System.out.print(" ");
} else {
System.out.print("*");
this.starsInLastPrint++;
}
}
}
public void print() {
this.starsInLastPrint = 0;
for (int i = 0; i < this.height; i++) {
printLine();
System.out.println("");
}
}
public int starsInLastPrint(){
return this.starsInLastPrint;
}
}Model Code
Main
public class Main {
public static void main(String[] args) {
// Test your code here
NightSky NightSky = new NightSky(0.1);
NightSky.print();
System.out.println("Number of stars: " + NightSky.starsInLastPrint());
System.out.println("");
NightSky.print();
System.out.println("Number of stars: " + NightSky.starsInLastPrint());
}
}NightSky
import java.util.Random;
public class NightSky {
private double density;
private int width;
private int height;
private int starsInLastPrint;
public NightSky(double density) {
this(density, 20, 10);
}
public NightSky(int width, int height) {
this(0.1, width, height);
}
public NightSky(double density, int width, int height) {
this.density = density;
this.width = width;
this.height = height;
}
public void print() {
this.starsInLastPrint = 0;
for (int y = 0; y < this.height; y++) {
printLine();
}
}
public void printLine() {
Random random = new Random();
for (int x = 0; x < this.width; x++) {
double randomValue = random.nextDouble();
if (randomValue > this.density) {
System.out.print(" ");
} else {
System.out.print("*");
this.starsInLastPrint = this.starsInLastPrint + 1;
}
}
System.out.println("");
}
public int starsInLastPrint() {
return starsInLastPrint;
}
}Comment
Both are pretty much the same. I am not sure why I had to initialise starsInLastPrint to 0 in the place that I did though which is a bit of a bugger.