Golang | Leetcode Golang题解之第125题验证回文串

题目：

题解：

func isPalindrome(s string) bool {s = strings.ToLower(s)left, right := 0, len(s) - 1for left < right {for left < right && !isalnum(s[left]) {left++}for left < right && !isalnum(s[right]) {right--}if left < right {if s[left] != s[right] {return false}left++right--}}return true
}func isalnum(ch byte) bool {return (ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z') || (ch >= '0' && ch <= '9')
}