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HackerRank Java Coding Questions and Answers - Astronomy Lecture

 

HackerRank  Java  Coding  Questions  and  Answers

Astronomy Lecture

Problem Statement -:

Anirudh is attending an astronomy lecture. His professor who is very strict asks students to write a program to print the trapezium pattern using stars and dots as shown below . Since Anirudh is not good in astronomy can you help him?

Sample Input:

N = 3

Output:

**.**

*…*

…..

*…*

**.**

Program :

 

// Hackerrank Java Coding Questions and Answers

//  Astronomy Lecture

 

import java.util.*;

class Trapezium

{

  public static void main(String[] args)

{

  Scanner sc=new Scanner(System.in);

  int n=sc.nextInt();

 int i,j;

   for(i=0;i<n;i++)

    {

        for(j=0;j<n;j++)

        {

            if(j<n-i-1)

                System.out.print("*");

            else

               System.out.print(".");

        }

        for(j=0;j<n-1;j++)

        {

            if(j<i)

                System.out.print(".");

            else

                System.out.print("*");

        }

      System.out.println();  

    }

 

 for(i=2;i<=n;i++)

    {

     for(j=0;j<n;j++)

 

        {

            if(j<i-1)

                System.out.print("*");

            else

                System.out.print(".");

 

        }

      for(j=0;j<n-1;j++)

            {

                if(j<n-i)

                   System.out.print(".");

                else

                    System.out.print("*");

            }

            System.out.println();

     }

 }

}

 

For execution and output so check the video :




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