Java打印实心和空心菱形

Java打印实心和空心菱形

public static void main(String[] args) {
System.out.println("请输入需要打印的菱形行数:");
int hangshu = new Scanner(System.in).nextInt();
int yiban = hangshu / 2 + 1;
int yibanduo = hangshu / 2;
System.out.println("空心菱形：");
for (int k = 1; k <= yiban; k++) {
for (int i = 1; i <= (yiban - k); i++) {
System.out.print(" ");
}
System.out.print("*");
for (int i = 1; i <= ((k - 2) * 2 + 1); i++) {
System.out.print(" ");
}

if (k != 1) {
System.out.print("*");
}
System.out.println();
}
for (int k = yibanduo; k >= 1; k--) {
for (int i = 1; i <= (yiban - k); i++) {
System.out.print(" ");
}
System.out.print("*");
for (int i = 1; i <= ((k - 2) * 2 + 1); i++) {
System.out.print(" ");
}
if (k != 1) {
System.out.print("*");
}
System.out.println();
}

System.out.println("实心菱形：");
for (int i = 1; i <= hangshu; i++) {
if (i <= hangshu / 2 + 1) {
for (int k = 1; k <= hangshu / 2 + 1 - i; k++) {
System.out.print(" ");
}
for (int k = 1; k <= i; k++) {
System.out.print("* ");
}
System.out.println();
} else {
for(int k = 1; k <= (i - (hangshu / 2 + 1)); k++) {
System.out.print(" ");
}
for (int k = 1; k <= (2 * (hangshu / 2 + 1) - i); k++) {
System.out.print("* ");
}
System.out.println();
}
}
}