Program to generate a triangle or an inverted triangle till n terms based upon the user's choice of triangle to be displayed - ICSE BOARD QUESTION 2009

/**

 * Write a program to generate a triangle or an inverted triangle

 * till n terms based upon the user's choice of triangle to be displayed.

 *

 * Example 1:

 * Input: Type 1 for a triangle and

 *        Type 2 for an inverted triangle

 *       

 *        1

 *        Enter the number of terms

 *        5

 *        OUTPUT:

 *        1

 *        2 2

 *        3 3 3

 *        4 4 4 4

 *        5 5 5 5 5

 *       

 */

import java.io.*;
class questionFIVE2009
{
    public static void main(String args[]) throws IOException
    {
        int i,j;
        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
        System.out.println("**************MENU*************");
        System.out.println("Type 1 for a triangle and ");
        System.out.println("Type 2 for an inverted triangle");
       
        int ch=Integer.parseInt(br.readLine());
        System.out.println("Enter the number of terms");
        int terms=Integer.parseInt(br.readLine());
       
        switch(ch)
        {
            case 1:          
            for(i=1; i<=terms; i++)
            {
                for(j=1; j<=i; j++)
                {
                    System.out.print(i);
                }
                System.out.println("");
            }
            break;
    
            case 2:
            for(i=terms; i>=1; i--)
            {
                for(j=1; j<=i; j++)
                {
                    System.out.print(i);
                }
                System.out.println("");
            }
            break;
           
            default:
            System.out.println("Wrong choice");
        }
    }
}