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LeetCode Construct Binary Tree from Inorder and Postorder Traversal
Given inorder and postorder traversal of a tree, construct the binary tree.Note:You may assume that duplicates do not exist in the tree.后序遍历的最后一个元素就是根...
分类:其他好文   时间:2014-11-11 00:40:07    阅读次数:189
LeetCode:Binary Tree Postorder Traversal
题目描述: Given a binary tree, return the postorder traversal of its nodes' values. For example: Given binary tree {1,#,2,3}, 1 2 / 3 return [3,2,1]. 思路:以中右左的...
分类:其他好文   时间:2014-11-10 13:53:20    阅读次数:163
二叉树的各种遍历算法-leetcode Binary Tree Postorder Traversal 扩展
二叉树的各种遍历方法有 前序遍历 中序遍历 后序遍历 层序遍历。其中前三种遍历有递归程序可以实现,但是我们也有必要掌握其非递归版本的算法实现。正好在leetcode中遇到了遍历二叉树的问题,今天在这里一并总结了。首先,引用leetcode中关于二叉树节点的定义。1 // Definition ...
分类:编程语言   时间:2014-11-09 12:37:56    阅读次数:329
Leetcode-Construct Binary Tree from inorder and postorder travesal
Given inorder and postorder traversal of a tree, construct the binary tree.Solution: 1 /** 2 * Definition for binary tree 3 * public class TreeNode .....
分类:其他好文   时间:2014-11-09 06:16:44    阅读次数:215
[LeetCode系列] 从中序遍历和后序遍历序列构造二叉树(迭代解法)
给定中序遍历inorder和后序遍历postorder, 请构造出二叉树.算法思路: 设后序遍历为po, 中序遍历为io.首先取出po的最后一个节点作为根节点, 同时将这个节点入stn栈;随后比较io的最后一个节点和stn栈顶节点:如果不同则将此节点添加到栈顶节点的右侧并入stn栈, 同时从po中删...
分类:其他好文   时间:2014-11-04 16:39:28    阅读次数:162
树的序列化
1. BST只保存preorder或者postorder就够了,递归有O(n^2)和O(n)算法。非递归有利用栈的O(n)算法。2. Complete binary treelevel traversal就行了。3. Full binary tree用一个bit来保存该结点是internal nod...
分类:其他好文   时间:2014-10-31 21:53:15    阅读次数:253
[Leetcode] Binary Tree Postorder Traversal
Given a binary tree, return thepostordertraversal of its nodes' values.For example:Given binary tree{1,#,2,3}, 1 \ 2 / 3return[3,2,1].No...
分类:其他好文   时间:2014-10-22 14:19:54    阅读次数:123
Binary Tree Preorder Traversal and Binary Tree Postorder Traversal
Binary Tree Preorder TraversalGiven a binary tree, return thepreordertraversal of its nodes' values.For example:Given binary tree{1,#,2,3}, 1 \ ...
分类:其他好文   时间:2014-10-19 22:42:10    阅读次数:223
leetcode - Construct Binary Tree from Inorder and Postorder Traversal
Given inorder and postorder traversal of a tree, construct the binary tree. Note: You may assume that duplicates do not exist in the tree. /** * Definition for binary tree * struct TreeNode {...
分类:其他好文   时间:2014-10-06 14:45:50    阅读次数:178
[Leetcode][JAVA] Binary Tree Preorder Traversal, Binary Tree Inorder Traversal, Binary Tree Postorder Traversal
Binary Tree PreOrder Traversal:Given a binary tree, return thepreordertraversal of its nodes' values.For example:Given binary tree{1,#,2,3}, 1 \ ...
分类:编程语言   时间:2014-10-04 02:51:25    阅读次数:285
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