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  • [LeetCode] 1930. Unique Length-3 Palindromic Subsequences

    Given a string s, return the number of unique palindromes of length three that are a subsequence of s. Note that even if there are multiple ways to obtain the same subsequence, it is still only counted once. A palindrome is a string that reads the sam…

    2021/7/13 6:06:33 人评论 次浏览
  • [LeetCode] 1930. Unique Length-3 Palindromic Subsequences

    Given a string s, return the number of unique palindromes of length three that are a subsequence of s. Note that even if there are multiple ways to obtain the same subsequence, it is still only counted once. A palindrome is a string that reads the sam…

    2021/7/13 6:06:33 人评论 次浏览
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