Given a binary tree, determine if it is a complete binary tree. Definition of a complete binary tree from Wikipedia: In a complete binary tree ...
原題鏈接在這里:https: leetcode.com problems check completeness of a binary tree 題目: Given a binary tree, determine if it is acomplete binary tree. Definition of a complete binary tree fromWikipedia:In a comp ...
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Given a binary tree, determine if it is a complete binary tree. Definition of a complete binary tree from Wikipedia: In a complete 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 ...
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 ...
原題地址:http://oj.leetcode.com/problems/balanced-binary-tree/ 題意:判斷一顆二叉樹是否是平衡二叉樹。 解題思路:在這道題里,平衡二叉樹的定義是二叉樹的任意節點的兩顆子樹之間的高度差小於等於1。這實際上是AVL樹的定義。首先要寫一個計算 ...
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 ...
Given a binary tree, determine if it is a valid binary search tree (BST). Assume a BST is defined as follows: The left subtree of a node ...
其他LeetCode題目歡迎訪問:LeetCode結題報告索引 題目鏈接 Two elements of a binary search tree (BST) are swapped by mistake. Recover the tree without changing its ...
Given a binary tree, return the inorder traversal of its nodes' values. For example:Given binary tree {1,#,2,3}, 非遞歸版本: 用一個棧來模擬遞歸的情況, 首先思考inorder ...