Java循环打印等腰三角形

package practice;

import java.util.Scanner;

public class EquicruralTriangle {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		System.out.print("请输入等腰三角形的打印行数：");
		int lines = sc.nextInt();
		for (int i = 0; i < lines; i++) {
			if (i == 0) {
				System.out.println();
			}
			for (int j = lines - i; j >= 0; j--) {
				System.out.print(" ");
			}
			for (int j = 0; j < (i * 2) + 1; j++) {
				System.out.print("*");
			}
			System.out.println();
		}

		sc.close();

	}

}