Pronic Number in JAVA

Pronic Number

Pronic Number : A number is said to be Pronic number if the product of any two consecutive integer is equal to the number itself.

Example:

Input         : 6

 : 2 X 3 = 6

Output      : It is a Pronic Number

 

Input         : 20

 : 4 X 5 = 20

Output      : It is a Pronic Number

 

Input         : 8

 : 2 X 4 = 8

Output      : It is not a Pronic Number

 

Some Pronic Numbers are :-

0, 2, 6, 12, 20, 30, 42, 56, 72, 90 etc.

Algorithm and Program given below :-

Algorithm :-

• Input number say ‘n’
• Start loop from 1 to less than ‘n’
• If (i*(i+1)==n) then make k=1 and use break statement
• Now check if k==1 then display "It is Pronic Number"
• Else display “It is not Pronic Number”
• Compile and run the program

Program :-

import java.io.*;
import java.util.*;
class Pronic
{
    public static void main(String args[])
    {
        Scanner in = new Scanner(System.in);
        int n,i,k=0;
        System.out.println("Enter Number");
        n= in.nextInt();
        for(i=1;i<n;i++)
        {
            if(i*(i+1)==n) // checking product of two consecutive integer is equal to number or not
            {
                k=1;
                break;
            }
        }
        if(k==1||n==0)
        {
            System.out.println("It is a Pronic Number : "+n);
        }
        else
        {
            System.out.println("It is not a Pronic Number : "+n);
        }
    }// end of main
}//end of class


Checkout Video of this Program : Click Here

All the Best :)
Keep Learning :)