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Write a program in Java to accept a number and make it a palindrome number by concatenating the number with its reverse.

Sample Input:
427

Sample Output:
427724

Java

Java Iterative Stmts

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Answer

import java.util.Scanner;

public class KboatPalindrome
{
    public static void main(String args[]) {
        Scanner in = new Scanner(System.in);
        System.out.print("Enter Number: ");
        int num = in.nextInt();
        int temp = num;
        int count = 0;
        int newNum = 0;
        
        while (temp != 0) {
            int d = temp % 10;
            newNum = newNum * 10 + d;
            count++;
            temp /= 10;
        }
        
        newNum = (int)(num * Math.pow(10, count)) + newNum;
        
        System.out.print("Palindrome Number = " + newNum);
    }
}

Output

BlueJ output of Write a program in Java to accept a number and make it a palindrome number by concatenating the number with its reverse. Sample Input: 427 Sample Output: 427724

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