Leetcode 236. Lowest Common Ancestor of a Binary Tree
题目链接 236. Lowest Common Ancestor of a Binary Tree 根据LCA的定义，二叉树中最小公共祖先就是两个节点p和q最近的共同祖先节点，LCA的定义没什么好解释的，主要是这道题的解法。 我们要找p和q的最小公共节点，我开始想到的方法是先找出root分别到p和q的路径，既然路径都知道了，就从两条路径的末尾倒着往前来，第一个共同节点就是....
leetCode 235. Lowest Common Ancestor of a Binary Search Tree 二排序树问题
235. Lowest Common Ancestor of a Binary Search Tree Given a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST. According to the definition of LCA on Wi...
[LeetCode]235.Lowest Common Ancestor of a Binary Search Tree
题目 Given a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST. According to the definition of LCA on Wikipedia: “The lowest common ancestor is defined bet...
[LeetCode]236.Lowest Common Ancestor of a Binary Tree
题目 Given a binary tree, find the lowest common ancestor (LCA) of two given nodes in the tree.According to the definition of LCA on Wikipedia: “The lowest common ancestor is defined between two nod...
[LeetCode] Lowest Common Ancestor of a Binary Tree
Well, a follow-up for the problem Lowest Common Ancestor of a Binary Search Tree. However, this time you cannot figure out which subtree the given nodes lie in according to their values. So you n...
[LeetCode] Lowest Common Ancestor of a Binary Search Tree
Well, remember to take advantage of the property of binary search trees, which is, node -> left -> val < node -> val < node -> right -> val. Moreover, both p and&nb...
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