Given a non-empty string s, you may delete at most one character. Judge whether you can make it a palindrome. Example 1: Input: "aba" Output: True Example 2: Input: "abca" Output: True Explanation: You could delete the character 'c'. N…

Given a non-empty string s, you may delete at most one character. Judge whether you can make it a palindrome. Example 1: Input: "aba" Output: True Example 2: Input: "abca" Output: True Explanation: You could delete the character 'c'. 思…

Given a non-empty string s, you may delete at most one character. Judge whether you can make it a palindrome. Example 1: Input: "aba" Output: True Example 2: Input: "abca" Output: True Explanation: You could delete the character 'c'. N…

题意:给定一个字符串,可以最多去掉一个字符,判断是否可以使该字符串成为一个回文串. 分析:head和tail双指针分别指向字符串首尾,如果s[head] != s[tail],则要么去掉s[head],要么去掉s[tail],只需判断s[head + 1]~s[tail]或s[head]~s[tail-1]是否为回文串即可. class Solution { public: bool judge(string s, int head, int tail){ while(head <= tail)…

680. Valid Palindrome II[easy] Given a non-empty string s, you may delete at most one character. Judge whether you can make it a palindrome. Example 1: Input: "aba" Output: True Example 2: Input: "abca" Output: True Explanation: You co…

problem 680. Valid Palindrome II solution: 不理解判断函数中的节点的问题... class Solution { public: bool validPalindrome(string s) { , right = s.size()-; while(left<right) { if(s[left]!=s[right]) { ) || isValid(s, left+, right);//err.. } left++; right--; } return…

Difficulty:easy  More:[目录]LeetCode Java实现 Description https://leetcode.com/problems/valid-palindrome-ii/ Given a non-empty string s, you may delete at most one character. Judge whether you can make it a palindrome. Example 1: Input: "aba" Output…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 双指针 思路来源 初版方案 进阶方案 日期 题目地址:https://leetcode.com/problems/valid-palindrome-ii/description/ 题目描述 Given a non-empty string s, you may delete at most one character. Judge whether y…

题目:给定一个字符串,在最多删除一个字符的情况下,判断这个字符串是不是回文字符串. 思路:回文字符串,第一想到的就是使用两个指针,前后各一个,当遇到前后字符不一致的时候,有两种情况,删除前面字符或者删除后面字符.由于删除一个字符后剩下的仍旧是字符串,可以直接递归处理了.然后用一个flag,当达到2时,就可以递归结束了. 代码如下: class Solution(object): def isPalindrome(self, s, left, right, flag): while left <…

Given a non-empty string s, you may delete at most one character. Judge whether you can make it a palindrome. Example 1: Input: "aba" Output: True Example 2: Input: "abca" Output: True Explanation: You could delete the character 'c'. N…

Given a non-empty string s, you may delete at most one character. Judge whether you can make it a palindrome. Example 1: Input: "aba" Output: True Example 2: Input: "abca" Output: True Explanation: You could delete the character 'c'. N…

［抄题］: Given a non-empty string s, you may delete at most one character. Judge whether you can make it a palindrome. Example 1: Input: "aba" Output: True Example 2: Input: "abca" Output: True Explanation: You could delete the character…

很久没有做题了,今天写个简单难度的练练手感. Given a non-empty string s, you may delete at most one character. Judge whether you can make it a palindrome. Example 1: Input: "aba" Output: True Example 2: Input: "abca" Output: True Explanation: You could dele…

static int wing=[]() { std::ios::sync_with_stdio(false); cin.tie(NULL); ; }(); class Solution { public: bool validPalindrome(string s) { int len=s.length(); ,right=len-; while(left<right) { if(s[left]!=s[right]) ,right,s)||judgedor(left,right-,s); le…

680. 验证回文字符串 Ⅱ 680. Valid Palindrome II 题目描述 给定一个非空字符串 s,最多删除一个字符.判断是否能成为回文字符串. 每日一算法2019/5/4Day 1LeetCode680. Valid Palindrome II 示例 1: 输入: "aba" 输出: True 示例 2: 输入: "abca" 输出: True 解释: 你可以删除c字符. 注意: 字符串只包含从 a-z 的小写字母.字符串的最大长度是 50000.…

原题链接在这里:https://leetcode.com/problems/valid-palindrome-iii/ 题目: Given a string s and an integer k, find out if the given string is a K-Palindrome or not. A string is K-Palindrome if it can be transformed into a palindrome by removing at most k charac…

Given a non-empty string s, you may delete at most one character. Judge whether you can make it a palindrome. Example 1: Input: "aba" Output: True Example 2: Input: "abca" Output: True Explanation: You could delete the character 'c'. N…

原题链接在这里:https://leetcode.com/problems/valid-palindrome-ii/description/ 题目: Given a non-empty string s, you may delete at most one character. Judge whether you can make it a palindrome. Example 1: Input: "aba" Output: True Example 2: Input: "…

Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. For example,"A man, a plan, a canal: Panama" is a palindrome."race a car" is not a palindrome. Note:Have you consider that th…

leetcode的第一题,回文数判断. 原题如下: For example, "A man, a plan, a canal: Panama" is a palindrome. "race a car" is not a palindrome. Note: Have you consider that the string might be empty? This is a good question to ask during an interview. For…

Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. For example,"A man, a plan, a canal: Panama" is a palindrome."race a car" is not a palindrome. Note:Have you consider that th…

题目简述: Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. For example, "A man, a plan, a canal: Panama" is a palindrome. "race a car" is not a palindrome. Note: Have you conside…

Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. For example,"A man, a plan, a canal: Panama" is a palindrome."race a car" is not a palindrome. Note:Have you consider that th…

Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. For example,"A man, a plan, a canal: Panama" is a palindrome."race a car" is not a palindrome. Note:Have you consider that th…

这个题目只要注意大小写问题即可解决,而且我们只关注的是字母和数值 Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. For example,"A man, a plan, a canal: Panama" is a palindrome."race a car" is not a palindrom…

Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. For example,"A man, a plan, a canal: Panama" is a palindrome."race a car" is not a palindrome. Note:Have you consider that th…

题目描述: Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. For example,"A man, a plan, a canal: Panama" is a palindrome."race a car" is not a palindrome. Note:Have you consider t…

[ 问题: ] Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. 直译:给你一个字符串, 判定它是否是回文(仅仅统计字母.数字.其它字符请忽略). For example, "A man, a plan, a canal: Panama" is a palindrome. "race a car"…

题目: Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. For example, "A man, a plan, a canal: Panama" is a palindrome. "race a car" is not a palindrome. Note: Have you consider…

Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. Note: For the purpose of this problem, we define empty string as valid palindrome. Example 1: Input: "A man, a plan, a canal: Panama" O…