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 ...
原文：[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 . 第一次遇到這個問題時我的解法，如下： 寫了一個getDepth 函數，訪問每個節點都要調用一次這個函數。這個Solution也通過了leetcode的驗證程序，但是后來想了想，I can do better. 下面是我對此算法時間復雜度的分析，當整棵樹有N個節點時，時間復雜度是O N logN . Soluti ...
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