NumberPrograms/Duck_No.java at main · javaistic/NumberPrograms · GitHub

32 lines (29 loc) · 764 Bytes

import java.util.*;

class Duck_No

{

// Function to check whether

// the given number is duck number or not.

static boolean check_duck(String num)

{

// Ignore leading 0s

int i = 0, n = num.length();

while (i < n && num.charAt(i) == '0')

i++;

// Check remaining digits

while (i < n) {

if (num.charAt(i) == '0')

return true;

i++;

}

return false;

}

// Driver Method

public static void main(String args[])

{

String num = "1023";

if (check_duck(num))

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

else

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

}

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