Sunny Number in JAVA

Sunny Number

Sunny Number : A number 'n' is said to be a Sunny Number if the square root of 'n+1' number is an integer.

Example : 8 is a Special number since '8+1' i.e. 9 has a square root 3 which is an integer.

Input     : 8

Output  : It is a Sunny Number

Input     :12

Output  : It is not a Sunny Number

Input     : 24

Output  : It is a Sunny Number

Algorithm and Program given below :-

Algorithm :- 

• Input a number
• Using for loop and store square of each number with value 1 less than the original in a variable
• If this value equal to the entered number
• Display "It is Sunny Number"
• Else " It is not a Sunny Number" 

Program :- 

import java.io.*;
import java.util.*;
class Sunny
{
    public static void main(String args[])
    {    
        Scanner in = new Scanner(System.in);
        int n,i,a,c=0;
        System.out.println("Enter Number : ");
        n= in.nextInt(); // Input Number
        for(i=1;i<=n;i++)
        {
            a= (i*i)-1; //storing square of an integer with 1 less value
            if(a==n)
            {
                c=1; // storing 1 if the condition is satisfied
            }
        }
        if(c==1)
        {
            System.out.println("It is a Sunny Number : "+n);
        }
        else
        {
            System.out.println("It is not a Sunny Number : "+n);
        }
    } // end of main method
} // end of class 

Program Video : Watch Now

All the Best :)

Keep Learning :)