Question

write a program in java to display following patterns​

Answer 1

Answer:

program for option b

import java.util.Scanner;

public class Pattern {

 public static void main(String[] args)

{

  int i,j,r;

  System.out.print("Input number of rows (half of the diamond) : ");

  Scanner in = new Scanner(System.in);

     r = in.nextInt();

  for(i=0;i<=r;i++)

  {

    for(j=1;j<=r-i;j++)

    System.out.print(" ");

    for(j=1;j<=2*i-1;j++)

      System.out.print("a");

    System.out.print("\n");

  }

 

  for(i=r-1;i>=1;i--)

  {

    for(j=1;j<=r-i;j++)

    System.out.print(" ");

    for(j=1;j<=2*i-1;j++)

      System.out.print("a");

    System.out.print("\n");

  }

 

}

}