Check my code and please correct it according to question

#1

import java.util.Scanner;

public class Reversenumber {

public static void main(String[] args)
{
  Scanner scn= new Scanner(System.in);
  int N=1000000001;
  while(N<0 || N > 1000000000) {
   N=scn.nextInt();
  }
  int reverse=0;
  int sum = 0;
  while(N % 10 != 0)
	  
  {
	  int rem = N % 10;
	  sum =sum*10 + rem;
	  N = N / 10;
      reverse=sum;
  }
  System.out.println(reverse);
}

}

#2

While condition is wrong. What if there’s a 0 in the number in between non-zero digits

#3

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