【强化练习】并查集经典习题

737. 句子相似性 II https://leetcode.cn/problems/sentence-similarity-ii

737. Sentence Similarity II https://leetcode.com/problems/sentence-similarity-ii

547. 省份数量 https://leetcode.cn/problems/number-of-provinces

547. Number of Provinces https://leetcode.com/problems/number-of-provinces

1361. 验证二叉树 https://leetcode.cn/problems/validate-binary-tree-nodes

1361. Validate Binary Tree Nodes https://leetcode.com/problems/validate-binary-tree-nodes

947. 移除最多的同行或同列石头 https://leetcode.cn/problems/most-stones-removed-with-same-row-or-column

947. Most Stones Removed with Same Row or Column https://leetcode.com/problems/most-stones-removed-with-same-row-or-column

前置知识

阅读本文前，你需要先学习：

• 并查集（Union Find）算法详解

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