Question

Write a Java Programming:-

Input a number and check whether the number is palindrome or not.​

Answer 1

Answer:public class Palindrome {

   public static void main(String[] args) {

       int num = 121, reversedInteger = 0, remainder, originalInteger;

       originalInteger = num;

       // reversed integer is stored in variable

       while( num != 0 )

       {

           remainder = num % 10;

           reversedInteger = reversedInteger * 10 + remainder;

           num  /= 10;

       }

       // palindrome if orignalInteger and reversedInteger are equal

       if (originalInteger == reversedInteger)

           System.out.println(originalInteger + " is a palindrome.");

       else

           System.out.println(originalInteger + " is not a palindrome.");

   }

}

Explanation:In this program,

   First, given number (num)'s value is stored in another integer variable, originalInteger. This is because, we need to compare the values of reversed number and original number at the end.

   Then, a while loop is used to loop through num until it is equal to 0.

       On each iteration, the last digit of num is stored in the remainder.

       Then, the remainder is added to reversedInteger such that it is added to the next place value (multiplication by 10).

       Then, the last digit is removed from num after division by 10.

   Finally, reversedInteger and originalInteger are compared. If equal, it is a palindrome number. If not, it isn't.

Here are the execution steps that take place: sorry bro pic is not coming