java输出一个空心菱形
时间: 2023-11-19 14:06:44 浏览: 31
以下是Java代码实现空心菱形的输出:
```java
import java.util.Scanner;
public class HollowDiamond {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.print("请输入菱形的边长:");
int n = sc.nextInt();
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= n - i; j++) {
System.out.print(" ");
}
System.out.print("*");
if (i > 1) {
for (int j = 1; j <= 2 * i - 3; j++) {
System.out.print(" ");
}
System.out.print("*");
}
System.out.println();
}
for (int i = n - 1; i >= 1; i--) {
for (int j = 1; j <= n - i; j++) {
System.out.print(" ");
}
System.out.print("*");
if (i > 1) {
for (int j = 1; j <= 2 * i - 3; j++) {
System.out.print(" ");
}
System.out.print("*");
}
System.out.println();
}
}
}
```
这段代码通过输入菱形的边长,使用循环语句和条件判断语句,输出一个空心菱形。