package com;
import java.util.*;
public class Test {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner s = new Scanner(System.in);
System.out.println("请输入三角形的行数:");
int n = s.nextInt();
for(int i = 0; i < n - 1; i++)
{
for(int x = i + 1; x < n; x++)
{
System.out.print(" ");
}
for(int y = 0; y < (i + 1) * 2 - 1; y++)
{
System.out.print("*");
}
System.out.println();
}
for(int i = 0; i < n; i++)
{
for(int x = 0; x < i; x++)
{
System.out.print(" ");
}
for(int y = i; y < 2 * n - i - 1; y++)
{
System.out.print("*");
}
System.out.println();
}
}
}
/*
*
***
*****
*******
*****
***
*
*/