public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("请输入菱形的边长:");
int height = sc.nextInt();
for (int i = 0; i < height; i++) {
for (int j = 0; j < height - i; j++) {
System.out.print(" ");
}
for (int k = 0; k < 2 * i + 1; k++) {
System.out.print("*");
}
System.out.println();
}
for (int i = 0; i < height; i++) {
for (int j = 0; j <= i + 1; j++) {
System.out.print(" ");
}
for (int k = 0; k < (height - 1) * 2 - 2 * i - 1; k++) {
System.out.print("*");
}
System.out.println();
}
Scanner sc = new Scanner(System.in);
System.out.println("请输入菱形的边长:");
int height = sc.nextInt();
for (int i = 0; i < height; i++) {
for (int j = 0; j < height - i; j++) {
System.out.print(" ");
}
for (int k = 0; k < 2 * i + 1; k++) {
System.out.print("*");
}
System.out.println();
}
for (int i = 0; i < height; i++) {
for (int j = 0; j <= i + 1; j++) {
System.out.print(" ");
}
for (int k = 0; k < (height - 1) * 2 - 2 * i - 1; k++) {
System.out.print("*");
}
System.out.println();
}
}
//思路：菱形是由两个等腰三角形拼凑而成的，一个“正立”的，一个“倒立”的。
//所谓的“菱形边长”实际上是“正立”的等腰三角形的高
//之所以这么写，是因为我觉得这么写比较洋气
