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Description: LeetCode Solutions: A Record of My Problem Solving Journey.( leetcode题解,记录自己的leetcode解题之路。) - leetcode/problems/547.friend-circles-en.md at master · zhoulujun/leetcode

Open Graph Description: LeetCode Solutions: A Record of My Problem Solving Journey.( leetcode题解,记录自己的leetcode解题之路。) - zhoulujun/leetcode

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Union-Findhttps://snowan.github.io/post/union-find/
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https://github.com/zhoulujun/leetcode/blob/master/problems/547.friend-circles-en.md#references-further-reading
Adjacency Matrix Wikihttps://www.wikiwand.com/en/Adjacency_matrix
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Algorighms 4 union-findhttps://www.cs.princeton.edu/~rs/AlgsDS07/01UnionFind.pdf
https://github.com/zhoulujun/leetcode/blob/master/problems/547.friend-circles-en.md#similar-problems
323. Number of Connected Components in an Undirected Graphhttps://leetcode.com/problems/number-of-connected-components-in-an-undirected-graph/
1101. The Earliest Moment When Everyone Become Friendshttps://leetcode.com/problems/the-earliest-moment-when-everyone-become-friends/
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