Pattern 11

import java.io.*;

class Patterns11{

public static void main(String args[])throws IOException{

//declare all the variables at the beginning
int n,i,j;
char ch;

    BufferedReader br = new BufferedReader( 
                new InputStreamReader(System.in));
    System.out.println("Enter the number of rows : ");
    n = Integer.parseInt(br.readLine());

    //loop to generate the number of terms in the series
    for(i = 1; i <= n; i++){
      ch = 'A'; 

       for(j = 1; j <= i; j++){
            System.out.print(ch + " ");
            ch++;
       }//end of inner loop

      System.out.println();

    }//end of outer loop

  }//end of main
}//end of class