Find the number is palindrome or not

In this article, we will see how to check if a number is palindrome or not. This is a very basic questions in interview. But, you never know about what kind of question the interviewer will ask. So, better you prepare for every certain questions. Also there is a question to find all palindrome number from a list.  Find few more collection interview question.  Today we will see how to check a number is palindrome or not. 


Palindrom.java

package com.javadevelopersguide.lab.basic;
/**
 * This program illustrates how to check a number is palindrome or not.
 *
 * @author manoj.bardhan
 *
 */
public class Palindrom {
public static void main(String[] args) {
int number = 121;
int temp = number;
int finalNumber = 0;
// Repeat the loop until the number became zero.
while (number != 0) {
// Get the First Digit (i.e. 1)
int firstDigit = number % 10;
// Get the Result number.
finalNumber = (finalNumber * 10) + firstDigit;
// Now get the remaining digits , after finding the first digit
number = number / 10;
}
// Now compare the finalNumber and number both are same or not.
if (finalNumber == temp) {
System.out.println("This number is a Palindrome.");
} else {
System.out.println("This number is not a Palindrome.");
}
}
}

Output -

This number is a Palindrome.

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