problem0125

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Published: Sep 11, 2020 License: MIT Imports: 1 Imported by: 0

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125. Valid Palindrome

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 that the string might be empty? This is a good question to ask during an interview.

For the purpose of this problem, we define empty string as valid palindrome.

解题思路

palindrome: 回文(指顺读和倒读都一样的词语)

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