文章目录

import java.util.Scanner;
/**
 * 输入一个数字-打印以该数字为行数的正三角形
 * @author miao
 *
 */

public class GraphTest9 {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		System.out.println("请输入数字，打印以该数字为行数的正三角形：");
		int n = sc.nextInt();
		for (int i = 1; i <= n; i++) {
			for (int j = 1; j <= n - i; j++) {
				System.out.print(" ");
			}
			for (int k = 1; k <= i * 2 - 1; k++) {
				System.out.print("*");
			}
			System.out.println();
		}
	}
}