回文算法

回文：是指正读和反读都同样的字符串

import java.util.*;

public class HiJava
{
  public static void main(String[] args)
  {
   Scanner sc = new Scanner(System.in);
   System.out.println("Please input the number: ");
   String word = sc.next();
   int i = word.length();
   int j = 0;
   while (j <= (i / 2) -1 && word.charAt(j) == word.charAt(i - j - 1))
     j++;
   if (j == i / 2)
    System.out.println("Yes it is HuiWen.");
   else
    System.out.println("No it is not HuiWen.");
   sc.close();
   }

}