TCS NQT• Prep

Reverse Digits

Here is the optimized solution in Java. Copy or view it below.

Java

package Problems_On_Number;

import java.util.Scanner;

public class ReverseDigits {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("enter the number:");
        int n = sc.nextInt();
        int res = 0;
        while (n > 0) {
            int temp = n % 10;
            res = res * 10 + temp;
            n /= 10;
        }
        System.out.println("the reversed number is " + res);
        sc.close();
    }

}