Program to demonstrate usage of allocating memory dynamically to second dimension of array, by displaying following pattern in Java

             X
          XXX
        XXXXX
      XXXXXXX
   XXXXXXXXX
XXXXXXXXXXX
   XXXXXXXXX
     XXXXXXX
       XXXXX
        XXX
           X

Example

import java.util.*;

class A404307

{

public static void main(String args[])

{

Scanner sc=new Scanner(System.in);

int a,j,k,i;

System.out.println("Enter The Value Of Number of Pattern ::");

a=sc.nextInt();

for(i=1;i<=a;i++)

{

for(j=a-i;j>0;j--)

{

System.out.print(" ");

}

for(k=1;k<=i;k++)

{

System.out.print(" *");

}

System.out.println();

}

for(i=a;i>=1;i--)

{

for(j=a-i;j>0;j--)

{

System.out.print(" ");

}

for(k=1;k<=i;k++)

{

System.out.print(" *");

}

System.out.println();

}

}

}