java流程控制之 for循环 打印杨辉三角

package struct;

public class TextDemo {
    public static void main(String[] args) {
        text();

        text2();
    }

    public static void text() {
//打印三角形    5行
        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();
        }

    }


    public static  void  text2(){
        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();
        }
    }
}

运行结果