Check if Door is Open Java

PROGRAM TO CHECK IF DOOR IS OPEN OR CLOSED JAVA

import java.io.*;

  

class GFG {

      

    // Function to check whether 'n'

    // has even number of factors or not

    static boolean hasEvenNumberOfFactors(int n)

    {

        double root_n = Math.sqrt(n);

      

        // if 'n' is a perfect square

        // it has odd number of factors

        if ((root_n*root_n) == n)

            return false;

      

        // else 'n' has even

        // number of factors

        return true;

    }

      

    // Function to find and print

    // status of each door

    static void printStatusOfDoors(int n)

    {

        for (int i = 1 ; i <= n; i++)

        {

            // If even number of factors

            // final status is closed

            if (hasEvenNumberOfFactors(i))

                System .out.print( "closed" + " ");

      

            // else odd number of factors

            // final status is open

            else

                System.out.print( "open" + " ");

        }

    }

      

    // Driver program

    public static void main (String[] args) {

        int n = 5;

        printStatusOfDoors(n);

          

    }

}




OUTPUT

open closed closed open closed

CREDITS: https://www.geeksforgeeks.org/check-door-open-closed/