153-判断回文

[java]代码库

import java.util.Scanner;
import java.util.Arrays;
public class Main {
	public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);    
 
        String r = scan.next();
        int i , j;
        System.out.println(r.length());//输出字符串的长度
        for(i = 0, j = r.length()-1 ; i <= j ; i++,j--)
		{
			if(r.charAt(i) != r.charAt(j))
			{
				System.out.print("N");
				return ;
			}
		}
        	System.out.print("Y");
   }
}