java实现一个空心菱形
时间: 2023-08-26 20:05:27 浏览: 44
以下是 Java 实现一个空心菱形的代码示例:
```java
import java.util.Scanner;
public class Diamond {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.print("请输入菱形的边长:");
int n = input.nextInt();
input.close();
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= n - i; j++) {
System.out.print(" ");
}
System.out.print("*");
for (int j = 1; j < 2 * i - 2; j++) {
System.out.print(" ");
}
if (i != 1) {
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("*");
for (int j = 1; j < 2 * i - 2; j++) {
System.out.print(" ");
}
if (i != 1) {
System.out.print("*");
}
System.out.println();
}
}
}
```
运行代码,输入菱形的边长,即可输出一个空心的菱形。其中,第一个 for 循环用于输出上半部分的菱形,第二个 for 循环用于输出下半部分的菱形。
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