java回文数

import java.util.Scanner;

public class Test13 {
 public static void main(String[] args) {
  Scanner scan = new Scanner(System.in);
  int num, temp;
  int[] arr = new int[10];
  int i, len;
  
  num = scan.nextInt();
  temp = num;
  i = 0;
  while(temp > 0){
   arr[i++] = temp % 10;
   temp /= 10;
  }
  len = i;
  
  for(i=0; i<len/2; i++){
   if(arr[i] != arr[len-i-1]){
    break;
   }
  }
  if(i >= len/2){
   System.out.println(num + " 是回文数");
  }
  else{
   System.out.println(num + " 不是回文数");
  }
 }
}