public class Solution { public int reverse(int x) { int ret=0; while(x!=0) { int t=x%10; ret=ret*10+t; x=x/10; } return ret; }} public class Solution { public boolean isPalindrome(int x) { if(x<0) return false; if(x==0) return true; int ret=0; int xo…

第一个题目是将整数进行反转,这个题实现反转并不难,主要关键点在于如何进行溢出判断.溢出判断再上一篇字符串转整数中已有介绍,本题采用其中的第三种方法,将数字转为字符串,使用字符串比较大小的方法进行比较. 代码如下: class Solution { public: int reverse(int x) { ]={,,,,,,,,,}; ]; ,flag=; ) flag=; else ) { flag=-; x=-x; } else ; ; ) { getnum[count]=(x%); x=x/…

leetcode bug & 9. Palindrome Number bug shit bug "use strict"; /** * * @author xgqfrms * @license MIT * @copyright xgqfrms * @created 2020-07-23 * @modified * * @description 9. Palindrome Number * @difficulty Easy * @complexity O(n) * @augme…

前言   [LeetCode 题解]系列传送门:  http://www.cnblogs.com/double-win/category/573499.html   1.题目描述 Determine whether an integer is a palindrome. Do this without extra space. Some hints: Could negative integers be palindromes? (ie, -1) If you are thinking of c…

题目要求判断一个整数是不是回文数,假设输入是1234321,就返回true,输入的是123421,就返回false.题目要求in-place,思路其实很简单,在LeetCode(7)里面我们刚好做了reverse integer,我们就可以利用reverse integer得到一个reverse number,然后和输入作对比,如果与输入一致,则返回true,如果不一致,则返回false.代码如下: public class Solution { public boolean isPalindr…

一天一道LeetCode系列 (一)题目 Determine whether an integer is a palindrome. Do this without extra space. Some hints: Could negative integers be palindromes? (ie, -1) If you are thinking of converting the integer to string, note the restriction of using extra…

9. Palindrome Number 题目: Determine whether an integer is a palindrome. Do this without extra space. click to show spoilers. Some hints: Could negative integers be palindromes? (ie, -1) If you are thinking of converting the integer to string, note the…

Palindrome Number Determine whether an integer is a palindrome. Do this without extra space. click to show spoilers. Some hints: Could negative integers be palindromes? (ie, -1) If you are thinking of converting the integer to string, note the restri…

我现在在做一个叫<leetbook>的开源书项目,把解题思路都同步更新到github上了,需要的同学可以去看看 地址:https://github.com/hk029/leetcode 这个是书的地址:https://hk029.gitbooks.io/leetbook/ 009. Palindrome Number[E] 问题: Determine whether an integer is a palindrome. Do this without extra space. 思路 这里说不…

描述:Determine whether an integer is a palindrome. Do this without extra space. Some hints: Could negative integers be palindromes? (ie, -1) If you are thinking of converting the integer to string, note the restriction of using extra space. You could a…