별찍기 (다이아몬드 모양)

public class ExerciseCh4_7_2 {
	static final int N = 10;
	public static void main(String[] args) {
		int i, j;
		
		for (i=1; i<N; i++) {
			for (j=1; j<N-i; j++) System.out.print(' ');
			for (j=1; j<=i; j++)
				if (j==1) System.out.print('*');
				else System.out.print(' ');
			for (j=1; j<=i-1; j++)
				if (j==i-1) System.out.print('*');
				else System.out.print(' ');
			System.out.println();
		}
		
		for (i=N-1; i>0; i--) {
			for (j=i; j<N; j++) System.out.print(' ');
			for (j=1; j<=i-1; j++)
				if (j==1) System.out.print('*');
				else System.out.print(' ');
			for (j=1; j<=i-2; j++)
				if (j==i-2) System.out.print('*');
				else System.out.print(' ');
			System.out.println();
		}
	}
}