三角形

public class SanjiaoDemo01 {
    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("*");
            }
            for (int j =2;j<=i;j++){
                System.out.print("*");
            }

            System.out.println("");
        }
    }
}