Given a non-empty string s, you may delete at most one character. Judge whether ...

一个 5 位数，判断它是不是回文数。即 12321 是回文数 ，个位与万位相同，十位与千位相同。

Determine whether an integer is a palindrome. An integer is a palindrome when it...

# 输入输出——简单的回文判断 # 代码 ''' 可以通过使用 seq[a:b] 来从位置 a 开 始到位置 b 结束来对序列进行切片 。我们同样可以提供第三个...

1005. Prime Palindromes Time Limit: 1sec Memory Limit:256MB

judge() 判断数字是否为回文数时，用到了数位截取，和 2021 年蓝桥杯省赛 C++ 组 B 题有类似思想，详情参考

Determine whether an integer is a palindrome. Do this without extra space.

Given a string s, you are allowed to convert it to a palindrome by adding charac...

Given a singly linked list, determine if it is a palindrome.

Given a list of unique words, find all pairs of distinct indices (i, j) in the g...

Determine whether an integer is a palindrome. Do this without extra space.

Determine whether an integer is a palindrome. An integer is a palindrome when it...

Given a string, determine if it is a palindrome, considering only alphanumeric c...

给定一个无重复元素的数组 candidates 和一个目标数 target ，找出 candidates 中所有可以使数字和为 target 的组合。

1. Description 2. Solution class Solution { public: bool isPalindrome(int x)...

Determine whether an integer is a palindrome. Do this without extra space. 

Given a string s, you are allowed to convert it to a palindrome by adding charac...

Given a string which consists of lowercase or uppercase letters, find the length...

Determine whether an integer is a palindrome. An integer is a palindrome when it...

最常规的思路是直接将数反转再对比，但实际上，我们只需要反转后半部分跟前半部分对比就可以了。两种情况，一是位数为偶数，直接对比，位数为奇数，大数除以10对比。