记录java编程练习

 /*   1  1 2 1  1 2 3 2 1 
数字金字塔 */


import java.util.Scanner; 

 public class shuzisanjiao 

{ 

public static void main(String[] args) 

{
        System.out.println("请输入要打印的行数：");  

Scanner sc=new Scanner(System.in); 

 int n=sc.nextInt();  

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

for(int j=1;j<=7-i;j++)

{
                System.out.print("  "); 

 } for(int j=1;j<=i;j++){
                System.out.print(" "+j);  } 

for(int j=i;j>1;j--){
                System.out.print(" "+(j-1));

 }
            System.out.println(); 

 }
    }
}