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 onl...
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其他好文 时间:
2014-05-23 12:20:50
阅读次数:
407
【题目】
Determine if a Sudoku is valid, according to: Sudoku Puzzles - The Rules.
The Sudoku board could be partially filled, where empty cells are filled with the character '.'.
A partially filled sudoku which is valid.
Note:
A valid Sudoku board (par...
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其他好文 时间:
2014-05-22 09:58:54
阅读次数:
234
11行制造了一个手机,手机名为wechatCallbackapiTest,这个手机有三个功能,一个功能是valid(),它的作用是签名和接口验证;另一个函数叫responseMsg(),这个该手机最重要的功能,就跟打电话一样;最后一个功能是checkSignature(),它是用来验证签名的。...
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微信 时间:
2014-05-22 07:02:37
阅读次数:
606
5道题目分别是:【Largest Rectangle in Histogram】、【Minimum Path Sum】、【Jump Game】、【Jump Game II 】、【Valid Number】,由于有一些题目不需要发一整篇博文来记录,所以就将这些题目以一篇博文5道来记录。...
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其他好文 时间:
2014-05-21 03:05:33
阅读次数:
481
【题目】
Given a string containing just the characters '(' and ')', find the length of the longest valid (well-formed) parentheses substring.
For "(()", the longest valid parentheses substring is "()", which has length = 2.
Another example is ")()())", whe...
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其他好文 时间:
2014-05-20 16:39:07
阅读次数:
280
1. 首先安装samba服务。 2. 配置防火墙(要先关闭) 3.
创建samba服务器用户:smbpasswd -a username 删除samba服务器用户:smbpasswd -x username 4.
配置/etc/samba/smb.conf 需要配置valid user vi /et...
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系统相关 时间:
2014-05-19 15:58:50
阅读次数:
279
Given a string containing just the characters '(', ')', '{', '}', '[' and ']',
determine if the input string is valid.
The brackets must close in the correct order, "()" and "()[]{}" are
all vali...
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其他好文 时间:
2014-05-18 15:11:17
阅读次数:
249
【题目】
Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid.
The brackets must close in the correct order, "()" and "()[]{}" are all valid but "(]" and "([)]" are not.
【题意】
判断给定的字符串是否是合法的...
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其他好文 时间:
2014-05-18 10:08:11
阅读次数:
327
【题目】
Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses.
For example, given n = 3, a solution set is:
"((()))", "(()())", "(())()", "()(())", "()()()"
【题意】
给定n对括号,输出所有可行的括号组合字符串。所谓合法,就是可以Valid Pare...
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其他好文 时间:
2014-05-18 09:06:41
阅读次数:
266
题意:
Evaluate the value of an arithmetic expression in
Reverse Polish Notation.
Valid operators are +, -, *,
/. Each operand may be an integer or another expression.
So...
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其他好文 时间:
2014-05-18 08:09:15
阅读次数:
190