java输出一个空心菱形-爱代码爱编程
可以使用以下代码来输出一个空心菱形:
public class HollowDiamond {
public static void main(String[] args) {
int size = 5;
for (int i = 0; i < size; i++) {
for (int j = 0; j < size - i - 1; j++) {
System.out.print(" ");
}
for (int j = 0; j < 2 * i + 1; j++) {
if (i == 0 || i == size - 1 || j == 0 || j == 2 * i) {
System.out.print("*");
} else {
System.out.print(" ");
}
}
System.out.println();
}
}
}