JAVA Program to find the input number is a duck number or not using method ( A duck number contains zeros, but there should not be zero present in the beginning of the number. Eg 3201, 1200).

PROGRAM :

package com.company;

import java.util.Scanner;

class duck

{

    public static void main(String[] args)

    {

        Scanner s=new Scanner(System.in);

        System.out.println(" Enter a number");

        String num=s.nextLine();

        char ch;

        int c=0;

        int l=num.length();

        for(int i=0;i<l;i++)

        {

            ch=num.charAt(i);

            if(ch=='0')

                c++;

        }

        char f=num.charAt(0);

        System.out.println("No of zeros in "+num+" is "+c);

        if(c>0 && f!='0')

            System.out.println(num+ " is a duck number");

        else

            System.out.println(num+ " is a not duck number");

    }

}

OUTPUT :