Given a non-empty string s, you may delete at most one character. Judge whether you can make it a palindrome. Example 1: Example 2: Note ...
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 palindro ...
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Given a non-empty string s, you may delete at most one character. Judge whether you can make it a palindrome. Example 1: Example 2: Note ...
题目描述如下: 给定一个字符串,验证它是否是回文串,只考虑字母和数字字符,可以忽略字母的大小写。 说明:本题中,我们将空字符串定义为有效的回文串。 示例 1: 示例 2: class Solution { public: bool isPalindrome ...
题目描述: 回文字符串是指从左到右和从右到左相同的字符串,现给定一个仅由小写字母组成的字符串,你可以把它的字母重新排列,以形成不同的回文字符串。 输入:非空仅由小写字母组成的字符串,长度不超过100; 输出:能组成的所有回文串的个数(因为结果可能非常大,输出对1000000007取余数 ...
回文串是指aba、abba、cccbccc、aaaa这种左右对称的字符串。每个字符串都可以通过向中间添加一些字符,使之变为回文字符串。 例如:abbc 添加2个字符可以变为 acbbca,也可以添加3个变为 abbcbba。方案1只需要添加2个字符,是所有方案中添加字符数量最少 ...
最近遇到两个题目,比较有意思,由于两个题目的描述比较相似,在这里就一起说了,做一个比较 题目一:给定一个字符串,给该字符串添加一些字符,使其成为一个回文串,求需要添加的最少字符数,并求出添加字符后回文串的样子,如果有多个这样的回文串,只用返回其中一个即可 比如: str="AB" 那么,只用 ...
Given a string containing only three types of characters: '(', ')' and '*', write a function to check whether this string is valid. We define ...
回文 palindrome Python 字符串反转string[::-1] Slice notation "[a : b : c]" means "count in increments of c starting at a inclusive, up to b exclusive ...
Determine whether an integer is a palindrome. An integer is a palindrome when it reads the same backward as forward. Example 1: Example ...