Feb 1, 2024 · In this article, we will look at a Duck Number in Java. We will look at its meaning and rules for a number to be Duck Number with the help of examples and write a Java program to demonstrate and verify it through our code.

Feb 28, 2025 · Below is the Java code demonstrating how to check for a Duck Number using a while loop. import java.util.*; public class ducknumber { public static boolean checkducknum(String number) { if (number.charAt(0) == '0') { return false; } int num = Integer.parseInt(number); while (num != 0) { if (num % 10 == 0) return true; num = num / …

Jun 8, 2021 · In this tutorial, we will learn about the Duck number with examples and write a java program for duck numbers. Before that, you may go through the following topics in java. loops in java; decision statement in java; What is a Duck Number? A number is said to be a duck number if it is a positive integer number with zeroes in it.

Feb 18, 2025 · The code below is to check the duck number in java using for loop. public static boolean checkTheNumber(String number){ int stringLength = number.length(); int zero=0; char character; for(int i= 0; i < stringLength; i++){ character = number.charAt(i); if(character == '0'){ zero++; char firstDigit = number.charAt(0); if(firstDigit!= '0' && zero>0){

A Duck number is a number which has zeroes present in it, but there should be no zero present in the beginning of the number. For example 3210 import java.util.Scanner; public class DuckNumber { public static void main(String[] args) { // TODO code application logic here int r, n, num; boolean flag=false; Scanner sc = new Scanner(System.in ...

Mar 17, 2025 · Let's implement the code to check a valid Duck number. Duck number is another special positive non-zero number that contains zero in it. The digit zero should not be presented at the starting of the number. Zero ...

In this short tutorial I will be sharing what is Duck number, examples of Duck number, algorithm and program to check whether a given number is Duck number or not. Read Also : Java Program to Check Neon Number

Nov 26, 2021 · By using a for loop, it iterates through other characters from index 1 to end. If it finds any character equal to 0, it marks isDuck to true and breaks from the loop. At the end of the program, it checks the value of isDuck and prints one message based on it. If you run this program, it will print output as like below:

May 30, 2023 · To iterate through all the numbers from 1 to the specified range, a for loop is used. The checkNumber () method is used to determine whether each number is a Duck number.

Mar 31, 2023 · Duck Number – Algorithm. Firstly to calculate the length of a given number, i.e., inputted number. To initialize checkZero variable value to 0, it represents the number of zero digits in the inputted number. To use for loop to check until condition satisfy. To check one digit at a time of inputted number to check whether the digit equals to ...