Java 數字翻轉

import java.util.Scanner;

public class NumberTurn{
        public static void main(String[] args){
                Scanner sc = new Scanner(System.in);
                String str;
  
                while( sc.hasNext() ){
                        str = sc.nextLine();
   
                        char c [] = str.toCharArray();
                        String tmp = "";
   
                        for( int i = c.length - 1; i >= 0; i-- ){
                                tmp += c[i];
                        }
   
                        System.out.println( Integer.parseInt(tmp) );
                }
        }
}

題目
參考程式