program to calculate product of each column in matrix

Write a java program to print following pattern

         1 

      1 2 1 

    1 2 3 2 1 

  1 2 3 4 3 2 1 

import java.util.Scanner;

public class NumberPattern {

public static void main(String[] args) {

Scanner sc=new Scanner(System.in);

System.out.println("Enter Row Size ");

int n=sc.nextInt();

for(int i=0;i<n;i++) {

int k=1,l=2*i-1;

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

System.out.print("  ");

}

for(int j=0;j<l;j++) {

System.out.print(k+" ");

if(j<l/2)

k++;

else

k--;

}

System.out.println();

}

}

}