Given a binary tree, return the level order traversal of its nodes' values. (ie, from left to right, level by level).For example:Given binary tree {3,...
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其他好文 时间：
2014-08-17 15:32:12
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131
Given a binary tree, return the bottom-up level order traversal of its nodes' values. (ie, from left to right, level by level from leaf to root).For e...
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其他好文 时间：
2014-08-17 15:31:52
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221
Given an array where elements are sorted in ascending order, convert it to a height balanced BST.思路：取数组的中点为树的根，前半部分为左子树，后半部分为右子树。 1 class Solution { 2...
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其他好文 时间：
2014-08-17 13:02:12
阅读次数：
210
题目：
You are given a binary tree with unique integer values on each node. However, the child pointers on each node may point to any other node in the tree including itself, introducing cycles into the...
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其他好文 时间：
2014-08-17 09:11:11
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301
Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST.思路：使用两个指针分别以1、2的速度遍历链表，以定位出链表的中点，进而将链表分割成...
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其他好文 时间：
2014-08-17 02:21:36
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246
Given inorder and postorder traversal of a tree, construct the binary tree.Note:You may assume that duplicates do not exist in the tree. 1 class Solut...
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其他好文 时间：
2014-08-17 01:03:21
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199
Given preorder and inorder traversal of a tree, construct the binary tree.Note:You may assume that duplicates do not exist in the tree.分析：通过一个二叉树的先序遍历...
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其他好文 时间：
2014-08-16 23:48:31
阅读次数：
333
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 the depth...
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其他好文 时间：
2014-08-16 23:42:41
阅读次数：
165
Given a binary tree and a sum, find all root-to-leaf paths where each path's sum equals the given sum.For example:Given the below binary tree and sum ...
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其他好文 时间：
2014-08-16 22:24:21
阅读次数：
212
Given a binary tree, flatten it to a linked list in-place.For example,Given 1 / \ 2 5 / \ \ 3 4 6The flattened t...
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其他好文 时间：
2014-08-16 22:23:31
阅读次数：
269
