680. Valid Palindrome II LeetCode Solution | Easy Approach

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Valid Palindrome II Given a string s, return true if the s can be palindrome after deleting at most one character from it.

Example 1:

Input: s = "aba"
Output: true

Example 2:

Input: s = "abca"
Output: true
Explanation: You could delete the character 'c'.

Example 3:

Input: s = "abc"
Output: false

Constraints:

  • 1 <= s.length <= 105
  • s consists of lowercase English letters.

Valid Palindrome II Solutions

Time: O(n)
Space: O(n)

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