Lowest Common Ancestor of a Binary Tree Given a binary tree, find the lowest common ancestor (LCA) of two given nodes in the tree. According ...
Reference: http: blog.csdn.net v july v article details http: leetcode.com lowest common ancestor of a binary tree part ii.html Is the tree a BST or not BST的話,我們就能按照BST的定義思考了。當前遍歷的node如果比我們要找的兩個點都大,說 ...
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Lowest Common Ancestor of a Binary Tree Given a binary tree, find the lowest common ancestor (LCA) of two given nodes in the tree. According ...
題目: 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 ...
https://leetcode.com/submissions/detail/32662938/ Given a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes ...
題目: 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 ...
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 ...
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 ...
Given a rooted binary tree, return the lowest common ancestor of its deepest leaves. Recall that: The node of a binary tree is a leaf ...
Recursion: 返回的時候返回lca和depth,每個node如果有大於一個子節點的depth相同就返回這個node,如果有一個子節點depth更深就返回個子節點lca,這個o(n)就可以了 Iteration: tree的recursion換成iteration處理 ...