使用堆栈检查给定的字符串是否是回文

Check if given string is a palindrome using stack(使用堆栈检查给定的字符串是否是回文)

问题描述

伙计们，

我最近接受了采访，并收到了一个关于回文的问题.

I was recently interviewed and got a question on Palindrome.

给定一个字符串(可能代表一个日期)，检查它是否是一个回文或不使用堆栈.

Given a string ( which might represent a date ), check if it's a palindrome or not using Stack.

我试图想出解决办法，但他不喜欢这样.

I tried to come up with solution, but he didn't like that.

谁能给我看Java的代码片段?

Can anyone show me the code snippet for it in Java ?

谢谢

PS:这不是作业，而是实际的面试问题.

PS : This is not a homework, actual interview question.

推荐答案

import java.util.Stack;

public class PalindromeTest {

    public static void main(String[] args) {

        String input = "test";
        Stack<Character> stack = new Stack<Character>();

        for (int i = 0; i < input.length(); i++) {
            stack.push(input.charAt(i));
        }

        String reverseInput = "";

        while (!stack.isEmpty()) {
            reverseInput += stack.pop();
        }

        if (input.equals(reverseInput))
            System.out.println("Yo! that is a palindrome.");
        else
            System.out.println("No! that isn't a palindrome.");

    }
}

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