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 nodes with keys less than the node's key.Th...
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其他好文 时间：
2014-08-05 09:43:39
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191
题目：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 on....
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编程语言 时间：
2014-08-04 13:57:17
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242
最近在实习，看着公司有些脚本是perl写，久闻perl处理文本还是很强大的，趁着周末扫了一般这本书~记录下了~
undef 默认未定义字符，perl里面没有NULL，defined($x)函数：如果参数为undef返回false
qw(cs phy geo) 类似于 （“cs”, "phy", "geo"）列表可以赋值给数组@array
数组操作符：pop,push操作末尾，sh...
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其他好文 时间：
2014-08-03 18:07:25
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228
Balanced Binary TreeGiven a binary tree, determine if it is height-balanced.For this problem, a height-balanced binary tree is defined as a binary tre...
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其他好文 时间：
2014-07-31 23:20:20
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267
Validate Binary Search TreeGiven a binary tree, determine if it is a valid binary search tree (BST).Assume a BST is defined as follows:The left subtre...
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其他好文 时间：
2014-07-31 23:11:40
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225
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 of the two subtrees of every node never diffe...
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编程语言 时间：
2014-07-31 20:55:47
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197
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...
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其他好文 时间：
2014-07-31 16:08:26
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283
题目：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 d....
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编程语言 时间：
2014-07-31 05:21:35
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221
Description
On Saint Valentine's Day, Alex imagined to present a special pendant to his girl friend made by K kind of pearls. The pendant is actually a string of pearls, and its length is defined a...
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其他好文 时间：
2014-07-30 17:30:44
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349
今天上网时偶尔发现这个在我脑海里疑惑的问题的答案。H.264 Video TypesThe following media subtypes are defined for H.264 video.SubtypeFOURCCDescriptionMEDIASUBTYPE_AVC1'AVC1'H.26...
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其他好文 时间：
2014-07-30 00:33:22
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494
