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Convert Sorted Array to Binary Search Tree转换成平衡二查搜索树
Given an array where elements are sorted in ascending order, convert it to a height balanced BST.二分递归转换Hide TagsTreeDepth-first Search/** * Definition...
分类:其他好文   时间:2014-11-20 13:40:54    阅读次数:171
二叉查找树
二叉查找树的实现二叉查找树(binary search tree, BST)的特征:1、所有节点存储一个关键字;2、非叶子节点的左指针指向小于其关键字的子树,右指针指向大于其关键字的子树(查找二叉树的中序遍历是有序序列);3、实际使用的二叉查找树一般都加入了平衡算法(balancedbinary s...
分类:其他好文   时间:2014-11-19 15:46:20    阅读次数:346
LeetCode Validate Binary Search Tree
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 contains only n...
分类:其他好文   时间:2014-11-17 14:02:09    阅读次数:146
Unique Binary Search Trees
Givenn, how many structurally uniqueBST's(binary search trees) that store values 1...n?For example,Givenn= 3, there are a total of 5 unique BST's. 1.....
分类:其他好文   时间:2014-11-17 13:56:57    阅读次数:141
Validate Binary Search Tree
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 contains only n...
分类:其他好文   时间:2014-11-17 09:12:02    阅读次数:179
Splay POJ3468(老题新做)
A Simple Problem with Integers Time Limit:5000MS     Memory Limit:131072KB     64bit IO Format:%I64d & %I64u Submit Status Practice POJ 3468 Appoint description:  System Crawler  (2014-11-...
分类:其他好文   时间:2014-11-17 01:47:23    阅读次数:290
Validate binary search tree
关于这道题目,不得不感慨leetcode真的是一个不错的网站,之前的代码是有bug的,当时AC了,现在测试用例更加完善了,于是不能AC了。 题目描述: Given a binary tree, determine if it is a valid binary search tree (BST). Assume a BST is defined as follows: The le...
分类:其他好文   时间:2014-11-16 23:08:48    阅读次数:362
[LeetCode] Validate Binary Search Tree (两种解法)
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 contains only n...
分类:其他好文   时间:2014-11-16 01:52:28    阅读次数:227
linux 切换用户身份、su、sudo、/etc/sudoers
Linux系统中,有时候普通用户有些事情是不能做的,除非是root用户才能做到。这时就需要用su命令临时切换到root身份来做事了。 su:substitute['s?bst?tju?t]代替 usersu 的语法为:su [OPTION选项参数] [用户]-, -l, --login 登录并改变到...
分类:系统相关   时间:2014-11-10 09:49:07    阅读次数:353
Validate Binary Search Tree(DFS)
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 contains only n...
分类:其他好文   时间:2014-11-09 16:41:17    阅读次数:122
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