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();
}
}
}