C++ DFS BFS解答Leecode難題3373 Maximize the Number of Target Nodes After Co...

C++ DFS BFS解答Leecode難題3373  Maximize the Number of Target Nodes After Connecting Trees II

圖論問題，跟bipartite有關

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Graphic question is related to the bipartite.

[codes on Leecode]https://leetcode.com/problems/maximize-the-number-of-target-nodes-after-connecting-trees-ii/solutions/6791084/dfs-bfs-with-parity-bitset-beats-100/

[Tree & Graph ]https://www.youtube.com/watch?v=vdar3a_ZdCI&list=PLYRlUBnWnd5Kt0-3un43cwY6yT_il8NWe

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C++ Py3計數解Leetcode 2131 Longest Palindrome by Concatenating Two Letter ...

C++ Py3計數解Leetcode 2131  Longest Palindrome by Concatenating Two Letter Words

回文問題常被問到。這題基本上可以用計數的方法來解決。重點是兩個字母的字串 xy 和 yx 可以配對。

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Palindrome question is quite often asked. This question can be solved basically by using counting. It's important to know the 2-letter strings xy & yx can be paired.

[codes on Leetcode]https://leetcode.com/problems/longest-palindrome-by-concatenating-two-letter-words/solutions/6778069/2d-array-counter-freq-count-c-c-py3-beats-100/

[C, C++ ,python速解迴文Leetcode 2108 Find First Palindromic String in the Array]https://www.youtube.com/watch?v=eXhdv8jDpao