package Course_Codes;
//打印一个实心圆和一个空心圆
public class 穷举 {

	public static void main(String[] args) {
		int r=16;
		sxy(r);
		kxy(r);
	}
	 static void sxy(int r) {
		for(int y=-r;y<=r;y+=2) {
			for(int x=-r;x<=r;x++) {
				if(x*x+y*y<=r*r) 
					System.out.print("*");
				else 
					System.out.print(" ");				
			}
			System.out.println();
		}		
		System.out.println();
	}
	 
	static void kxy(int r) {
		for(int y=r;y>=-r;y=y-2) {			
			int x=(int)Math.round(Math.sqrt(r*r-y*y));
			for(int i=1;i<=r-x;i++)
				System.out.print(" ");
			System.out.print("*");
			for(int i=1;i<=2*x;i++) 
				System.out.print(" ");
			System.out.println("*");
		}
	}
}