# Union Find

- [128     Longest Consecutive Sequence](/algorithm-practice/leetcode/union-find/128-longest-consecutive-sequence.md)
- [130     Surrounded Regions](/algorithm-practice/leetcode/union-find/130-surrounded-regions.md)
- [200     Number of Islands](/algorithm-practice/leetcode/union-find/200-number-of-islands.md)
- [261     Graph Valid Tree](/algorithm-practice/leetcode/union-find/261-graph-valid-tree.md)
- [305     Number of Islands II](/algorithm-practice/leetcode/union-find/305-number-of-islands-ii.md)
- [323     Number of Connected Components in an Undirected Graph](/algorithm-practice/leetcode/union-find/323-number-of-connected-components-in-an-undirected-graph.md)
- [547     Friend Circles](/algorithm-practice/leetcode/union-find/547-friend-circles.md)
- [684     Redundant Connection](/algorithm-practice/leetcode/union-find/684-redundant-connection.md)
- [685     Redundant Connection II](/algorithm-practice/leetcode/union-find/685-redundant-connection-ii.md)
- [695 Max Area of Island](/algorithm-practice/leetcode/union-find/695-max-area-of-island.md)
- [721     Accounts Merge](/algorithm-practice/leetcode/union-find/721-accounts-merge.md)
- [737     Sentence Similarity II](/algorithm-practice/leetcode/union-find/737-sentence-similarity-ii.md)
- [765     Couples Holding Hands](/algorithm-practice/leetcode/union-find/765-couples-holding-hands.md)
- [803 Bricks Falling When Hit](/algorithm-practice/leetcode/union-find/803-bricks-falling-when-hit.md)
