C语言实验——打印菱形

import java.util.Scanner;

public class Main {

public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner reader = new Scanner(System.in);
int n = reader.nextInt();
for(int i=0;i<n;i++) {
for(int j=0;j<n-1-i;j++)
System.out.print(' ');
for(int j=0;j<2*i+1;j++) {
System.out.print('*');
}
System.out.println();
}
for(int i=0;i<n-1;i++) {
for(int j=0;j<i+1;j++)
System.out.print(' ');
for(int j=0;j<2*(n-2-i)+1;j++) {
System.out.print('*');
}
System.out.println();
}
reader.close();
}
}