打印一个三角形

package com.hai.week2;

public class Demo01 {
    public static void main(String[] args) {
        //打印一个5行的三角形
        for (int i = 1; i <= 5; i++) {
            for (int j = 5; j >= i; j--) {
                System.out.print(" ");
            }
            for (int j = 1; j <= i; j++) {
                System.out.print("*");
            }
            for (int j = 1; j < i; j++) {
                System.out.print("*");
            }
            System.out.println();

        }
    }
}