Question

Using java write a program that takes a single, positive integer, n as a command-line argument. The program should then plot n evenly spaced points around a circle

Answer 1

Code

class Circle{
// function to print circle pattern
static void printCircle(int radius){
// dist represents distance to the center
double dist;
// for horizontal movement
for(int i=0;i<=2*radius;i++){
// for vertical movement
for(int j=0;j<=2*radius && i%2==0;j++){ //For even spaces we included "i%2==0" condition too
dist=Math.sqrt((i-radius)*(i-radius)+(j-radius)*(j-radius));// dist should be in the range (radius - 0.5)
if(dist>radius-0.3 && dist<radius+0.3)// and (radius + 0.5) to print stars(*)
System.out.print("*");
else
System.out.print(" ");
}
System.out.print("\n");
}
}

public static void main(String[] args){
int radius=Integer.parseInt(args[0]); //Converting command line string input to integer
printCircle(radius);
}
}

Output:-

Thank you