Palindrome is nothing but any number or a string which remains unchanged when it is reversed. For example: 121 or RAR. It is observable that letters form reflect images on turn around.
public class PalindromeProgramInJavaUsingWhileLoop { public static void main(String[] args) { int rem, rev= 0, temp; int n=121; // Input Number temp = n; while( n != 0 ){ rem= n % 10; rev= rev * 10 + rem; n=n/10; } if (temp == rev){ System.out.println(temp + " is a palindrome."); }else{ System.out.println(temp + " is not a palindrome."); } } }
Output: 121 is a palindrome number
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