[LeetCode] Longest Palindromic Subsequence 最长回文子序列

[LeetCode] Longest Palindromic Subsequence 最长回文子序列 Given a string s, find the longest palindromic subsequence's length in s. You may assume that the m...

[LeetCode] Count Different Palindromic Subsequences 计数不同的回文子序列的个数

Given a string S, find the number of different non-empty palindromic subsequences in S, and return that number modulo 10^9 + 7. A subsequenc...

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