Java利用for循环输出空心菱形的实例代码

public class Diamond {     public static void main(String[] args) {         printHollowRhombus(6);     }     public static void printHollowRhombus(int size) {         if (size % 2 == 0) {             size++;// 计算菱形大小         }         for (int i = 0; i < size / 2 + 1; i++) {             for (int j = size / 2 + 1; j > i + 1; j--) {                 System.out.print("  ");// 输出左上角位置的空白             }             for (int j = 0; j < 2 * i + 1; j++) {                 if (j == 0 || j == 2 * i) {                     System.out.print("* ");// 输出菱形上半部边缘                 } else {                     System.out.print("  ");// 输出菱形上半部空心                 }             }             System.out.println("");     //换行         }         for (int i = size / 2 + 1; i < size; i++) {             for (int j = 0; j < i - size / 2; j++) {                 System.out.print("  ");// 输出菱形左下角空白             }             for (int j = 0; j < 2 * size - 1 - 2 * i; j++) {                 if (j == 0 || j == 2 * (size - i - 1)) {                     System.out.print("* ");// 输出菱形下半部边缘                 } else {                     System.out.print("  ");// 输出菱形下半部空心                 }             }             System.out.println("");     //换行         }     } }