Bell Number Triangle Pattern

Bell Number Triangle Pattern in Java

Question : Write a program to print the following pattern.

Bell Number Triangle Pattern

Program to print the above pattern :-

Program :-

import java.io.*;

import java.util.*;

class Pat2

{

    public static void main(String args[])

    {

        Scanner in = new Scanner(System.in);

        int i,j,k=1,n;

        System.out.println("Enter Number of Rows");

        n= in.nextInt(); //input number of rows of pattern

        int ar[][]=new int[n][n]; //2D array for storing number

        ar[0][0]=1;

        for(i=1;i<n;i++)

        {

            ar[i][0] = ar[i-1][i-1];

            for(j=1;j<=i;j++)

            {

                ar[i][j]= ar[i-1][j-1] + ar[i][j-1];

            }

        }

        for(i=0;i<n;i++)

        {

            for(j=0;j<=i;j++)

            {

                System.out.print(ar[i][j]+"\t");

            }

            System.out.println();

        }

    }// end of main method

}// end of class

For Proper Understanding Watch the Video :-

Watch this video : Bell Triangle Pattern in Java

All the best :)

Keep Learning :)