看到这个题目的时候,首先不认识 Determine这个单词.英文不好没办法,查了下是确认的意思,然后不懂 palindrome这个单词, 查了下是回文的意思. 问题是 回文是个什么东西,官方解释: A palindrome is a word, phrase, number, or other sequence of characters which reads the same backward or forward. 回文 尽管英文不好,可是这个英文解释还是看懂了的.意思就是从前读到后面和倒…

A palindrome is a string that reads the same forward and backward, for example, radar, toot, and madam. In this lesson we discuss how to approach the palindrome problem using TypeScript / JavaScript. We also discuss a more complex algorithmic challen…

Reverse Integer Reverse digits of an integer. Example1: x =  123, return  321 Example2: x = -123, return -321 click to show spoilers. Have you thought about this? Here are some good questions to ask before coding. Bonus points for you if you have alr…

Determine whether an integer is a palindrome. Do this without extra space. 分析:把一个数倒过来,然后看两个数是否相同. public class Solution { public boolean isPalindrome(int x) { ) { return false; } , inputX = x; ) { palindromeX = palindromeX * + (x % ); x = x / ; } ret…

Reverse Integer Reverse digits of an integer. Example1: x = 123, return 321Example2: x = -123, return -321 click to show spoilers. Have you thought about this? Here are some good questions to ask before coding. Bonus points for you if you have alread…

9. 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 res…

题目简述: 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 coul…

问题: Determine whether an integer is a palindrome. Do this without extra space. 官方难度: Easy 翻译: 不使用额外空间,判断一个数是不是回文形式. 暂定负数不参与讨论. 先获取数值长度,取得对应位置的数字比较. 重点是如何取到一个整数指定位置的数字,通过(x/Math.pow(10,n-1))%10来实现. 循环至一半就可以退出. 解题代码: public static boolean isPalindrome(…

Determine whether an integer is a palindrome. Do this without extra space. public class Solution { public boolean isPalindrome(int x) { || (x != && x % == )) // the last digit is 0 return false; ; while (x > sum) { sum = sum * + x % ; x = x / ;…

Determine whether an integer is a palindrome. Do this without extra space. 这题貌似解法挺多,直接用简单的把数倒置,没有考虑数据溢出的问题,如需解决可以把转置数设为long long即可.另外方法可以用到前后匹配.递归比较等. class Solution { public: bool isPalindrome(int x) { int a=x; ; ) return false; while(x) { n*=; n+=x…

Determine whether an integer is a palindrome. Do this without extra space. 解题思路一: 双指针法,逐位判断 Java代码如下: static public boolean isPalindrome(int x) { if (x < 0) return false; int temp = x,beginIndex = 0, endIndex = 0; while (temp >= 10) { temp /= 10; en…

Determine whether an integer is a palindrome. Do this without extra space. 尝试用两头分别比较的方法,结果发现无法解决1000021这种问题 public class Solution { public boolean isPalindrome(int x) { if(x<0) return false; int lastbit=x%10; int firstbit; int num=x; int bits=0; whil…

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 also…

/* 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 restriction of using…

9. Palindrome Number Total Accepted: 136330 Total Submissions: 418995 Difficulty: Easy 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 conv…

9 - Palindrome Number 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…

Question: 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…

题意: Determine whether an integer is a palindrome. Do this without extra space.  (Easy) 分析: 自己考虑的方法是利用Reverse Integer,然后查看rev与x是否相等,注意负数和0的判断(这里WA了一次) 代码1: class Solution { private: int reverse(int x) { ; ) { ; x /= ; result = result * + temp; if (res…

Determine whether an integer is a palindrome. Do this without extra space.(不要使用额外的空间) 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…

题目描述: Determine whether an integer is a palindrome. Do this without extra space. 解题分析: ^_^个人觉得这道题没有什么可分析的,直接看代码就能明白^_^. 具体代码: public class Solution { public static boolean isPalindrome(int x) { if(x<0) return false; if(x>=0&x<=9) return true;…

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 also…

问题描述: 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 coul…

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 space. You could…

# -*- coding: utf8 -*-'''__author__ = 'dabay.wang@gmail.com'https://oj.leetcode.com/problems/palindrome-number/ Determine whether an integer is a palindrome. Do this without extra space. Some hints:Could negative integers be palindromes? (ie, -1) If…

Problem: 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 restriction of…

题目: 判断一个数是不是回文数 Determine whether an integer is a palindrome. Do this without extra space. 思路:借助上一道求整数逆序的思路,判断逆序后的数和原数是否相等就行.要注意,负数都不是回文数 / test cases passed. Status: Accepted Runtime: ms Submitted: minutes ago 解答: public class Solution { public bool…

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 restriction of using ext…

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 also…

Problem: Determine whether an integer is a palindrome. Do this without extra space. 简单的回文数,大一肯定有要求写过,不过从基础开始尝试吧. Solution: public class Solution { public boolean isPalindrome(int x) { int n=1; int copyx=x; if(x<0)return false; if(x<10)return true; w…

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 restriction of using ext…