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…

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…

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…

翻译 给定一个字符串.确定它是否是回文的,仅仅考虑当中的数字和字符并忽略其它. 比如. "A man, a plan, a canal: Panama" 是回文的. "race a car" 不是回文的 批注: 你是否考虑了字符串可能为空?这样的面试的时候是一个好问题. 对于这问题的意图,我们定义空字符串是回文的. 原文 Given a string, determine if it is a palindrome, considering only alphanu…

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…

[问题描写叙述] 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 cons…

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…

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:判断字符串是否是回文字符串 先将所有的字母和数字字符保留,并将大写字母转化成小写字母,然后将字符串倒置,比较前后两个字符串是否相同. 该题最好的解法可以模仿 Leetcode 345 Reverse Vowels of a String 字符串处理 class Solution { public: bool isPalindrome(string s) { ; ; i< s.size(); ++i){ if(isalpha(s[i]) || isdigit(s[i])) { if(isup…

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 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. 解题思路: 注意题目,忽略大小写,忽略非字母或数字,JA…

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…

现在开始进入字符串系列. 判断回文串的.首尾各定义一个指针,然后相比较.难点在于如何提出非字母数字的字符. bool isValidPalind(string s) { //转为小写,注意这个函数的用法 transform(s.begin(), s.end(), s.begin(), ::towlower); auto left = s.begin(), right = prev(s.end()); while (left < right) { //首先判断是否是数字或字母 if (!::isa…

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)…

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 which consists of lowercase or uppercase letters, find the length of the longest palindromes that can be built with those letters. This is case sensitive, for example "Aa" is not considered a palindrome here. Note:Assume the lengt…

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…

题目来源 https://leetcode.com/problems/valid-palindrome/ 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"…