FB面經 Prepare: LCA of Deepest Nodes in Binary Tree
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 ...
原文：1151 LCA in a Binary Tree（30 分）
The lowest common ancestor LCA of two nodes U and V in a tree is the deepest node that has both U and V as descendants. Given any two nodes in a binary tree, you are supposed to find their LCA. Input ...
2018-09-10 14:41 0 857 推薦指數：
相關推薦
LCA Binary Lifting 倍增
留坑 待填 一篇不錯的CF博客 這篇純講理論的，比較清楚。 去CF上搜Gym algorithm 可以看到很多算法文章。 ...
Binary Tree和Binary Search Tree
Binary TreeDefinition： at most two children node. Binary Tree Example: 10 ==root / \ 13 ...
二分搜索樹（Binary Search Tree）
什么是二叉樹？ 在實現二分搜索樹之前，我們先思考一下，為什么要有樹這種數據結構呢？我們通過企業的組織機構、文件存儲、數據庫索引等這些常見的應用會發現，將數據使用樹結構存儲后，會出奇的高效，樹結構本身是一種天然的組織結構。常見的樹結構有：二分搜索樹、平衡二叉樹（常見的平衡二叉樹有AVL和紅黑樹 ...
leetcode 30 days challenge Check If a String Is a Valid Sequence from Root to Leaves Path in a Binary Tree
Check If a String Is a Valid Sequence from Root to Leaves Path in a Binary Tree Given a binary tree where each path going from the root to any leaf ...
[Leetcode] Balanced Binary Tree
問題：給一個二叉樹，寫一個算法判斷這個樹是不是balanced。 Solution #1. 第一次遇到這個問題時我的解法，如下： 寫了一個getDepth()函數，訪問每個節點都要 ...
LeetCode Balanced Binary Tree
Given a binary tree, determine if it is height-balanced. For this problem, a height-balanced binary tree is defined as a binary tree in which ...
[LeetCode] 270. Closest Binary Search Tree Value 最近的二分搜索樹的值
Given a non-empty binary search tree and a target value, find the value in the BST that is closest to the target. Note: Given target value ...