流程控制练习

public class TestDemo1 {
    public static void main(String[] args) {
        //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();

 

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