https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree-ii/ BT, with parent pointer. https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree-iii/ BT, multiple nodes(>2) to find LCA https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree-iv/ 1...
LeetCode 236. Lowest Common Ancestor of a Binary Tree(二叉树的最近公共祖先) 题目 分析 思路:寻找给定节点的公共祖先,一般这类题目可以采用树的遍历的思想来解决,在遍历树的过程中,我们可以找到这两个节点的位置,同时,在遍历的过程中,也可以知道到达节点的路径,当我们得到了路径,就可以找到两条路径的重叠的...
Given a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST. According to thedefinition of LCA on Wikipedia: “The lowest common ancestor is defined between two nodes p and q as the lowest node in T that has both p and q as descendants (wh...