java，输入整数n(1<=n<=9),打印出n行数字金字塔，急急急！！！

Posted 2023-03-18

package test20201231;

import java.util.Scanner;

public class Test01

public static void main(String[] args)

Scanner sc = new Scanner(System.in);

System.out.println("请输入一个1-9之间的整数");

int n = sc.nextInt();

while(n<1 || n>9)

System.out.println("你输入的数字不在0-9之间，或者不是整数,请重新输入");

n = sc.nextInt();

for(int i=1;i<=n;i++)

for(int j=n-i;j>0;j--)

System.out.print(" ");

for(int j=(i+i-1);j>0;j--)

System.out.print(i);

for(int j=0;j<n-i;j++)

System.out.print("");

System.out.println();

参考技术A //1<=n<=9
System.out.println("输入1-9的数字");
int n=new Scanner(System.in).nextInt();
for(int i=0;i<=n;i++)
for(int j=0;j<n-i;j++)
System.out.print(" ");

for(int j=0;j<=2*i;j++)
System.out.print(i);


System.out.println();