在这里，我为您粘贴代码：
但是，我强烈建议您了解其工作原理，
从您的问题出发，您是完全不可读的。
尝试理解此代码。 阅读代码中的注释
import java.util.Scanner;public class Palindromes{ public static boolean isPal(String s) { if(s.length() == 0 || s.length() == 1) // if length =0 OR 1 then it is return true; if(s.charAt(0) == s.charAt(s.length()-1)) // check for first and last char of String: // if they are same then do the same thing for a substring // with first and last char removed. and carry on this // until you string completes or condition fails return isPal(s.substring(1, s.length()-1)); // if its not the case than string is not. return false; } public static void main(String[]args) { Scanner sc = new Scanner(System.in); System.out.println("type a word to check if its a palindrome or not"); String x = sc.nextLine(); if(isPal(x)) System.out.println(x + " is a palindrome"); else System.out.println(x + " is not a palindrome"); }}
