回文判断

import java.util.Scanner;

public class Test {

public static void main (String args[])
{
Scanner sca=new Scanner(System.in);
String str=sca.nextLine();
int a=str.length();
int middle=a/2,i=3;
for(i=0;i<middle&&str.charAt(i)==str.charAt(a-1-i);i++)
{

}
if(i<middle)
System.out.println(str+"不是回文");
else
System.out.println(str+"是回文");
}

}