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[leetcode] Validate Binary Search Tree
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...
分类:其他好文   时间:2015-06-10 12:03:48    阅读次数:89
Valid Palindrome
基础但是要掌握 int a = 'A'这种写法,以及s.trim(); s = s.toUpperCase();public class Solution { public boolean isPalindrome(String s) { if(s==null ||...
分类:其他好文   时间:2015-06-10 11:56:06    阅读次数:101
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:2015-06-10 06:27:16    阅读次数:102
LightOJ1021---Painful Bases (状压dp)
As you know that sometimes base conversion is a painful task. But still there are interesting facts in bases.For convenience let’s assume that we are dealing with the bases from 2 to 16. The valid symb...
分类:其他好文   时间:2015-06-09 21:59:18    阅读次数:133
CENTOS7错误:Cannot find a valid baseurl for repo: base/7/x86_6
yum安装时报Cannotfindavalidbaseurlforrepo:base/7/x86_6.PING国内的外网时正常。然后上网查类似的问题,发现说是DNS问题,随将DNS改成8.8.8.8重启网络服务。yum立马OK.
分类:Web程序   时间:2015-06-09 20:14:54    阅读次数:149
微信公众平台开发接口PHP SDK完整版(转载)
responseMsg();}else{ $wechatObj->valid();}class wechatCallbackapiTest{ //验证签名 public function valid() { $echoStr = $_GET["echostr"]; $signature = $_GE...
分类:微信   时间:2015-06-09 15:43:48    阅读次数:286
Restore IP Addresses
Given a string containing only digits, restore it by returning all possible valid IP address combinations.For example:Given"25525511135",return["255.2...
分类:其他好文   时间:2015-06-09 11:31:09    阅读次数:101
The path "" is not a valid path to the 3.10.0-229.4.2.el7.x86_64 kernel headers.
Mac下面安装CentOS7.1[RHEL7.1]一切顺利的VMwaretools,在Windows2012VMwareWorkstation11下面居然报错,简直是崩溃。CentOS7.1[RHEL7.1]系统本身自带open-vm-tools,但是不支持复制粘贴,太麻烦了,需要重新安装VMwareTools。居然找不到Kernelheader。Searchingforavalidkerne..
分类:其他好文   时间:2015-06-09 06:18:35    阅读次数:203
Error: Failed to launch instance "win7": Please try again later [Error: No valid host was found. ].
1.首先查看所有服务是否已经启动    执行 # nova-manage service list Binary             Host       Zone         Status   State         Updated_At nova-consoleauth  mycontrollerinternal  enabled      :-)     2014-06...
分类:Windows程序   时间:2015-06-08 17:33:47    阅读次数:241
[LeetCode] Word Break II
Given a stringsand a dictionary of wordsdict, add spaces insto construct a sentence where each word is a valid dictionary word.Return all such possibl...
分类:其他好文   时间:2015-06-08 16:45:59    阅读次数:130
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