用for打印一个三角形

package com.qiqi.struce;

public class ForDemo05 {
    public static void main(String[] args) {
        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("7");
            }
            for (int j = 1; j < i; j++) {
                System.out.print("7");
            }
            System.out.println();
        }
    }
}

标签：ForDemo05,一个,打印,System,int,print,三角形,public,out
来源： https://www.cnblogs.com/shuqiqi/p/16413056.html