LeetCode 1. 基于头插法的迭代: public ListNode reverseList(ListNode head) { if(head == null) return null; ListNode res = new ListNode(0); res.next = head; ListNode cur = head; while(cur.next != null){ ListNode tmp = cur.next; cur.next = tmp.next; tmp.next = r…

运行/sbin/shutdown now最后显示:Telling INIT to go to single user mode.INIT:Going single userINIT:Sending grocesses the TERM signalINIT:no more processes left in this runlevelsh-3.2#在此状态下运行csh后自动登录为root.若运行exit系统就重新启动回到登录画面. 登录后运行reboot,系统可正常重启.   解决方法: 1.…

Given an array of numbers nums, in which exactly two elements appear only once and all the other elements appear exactly twice. Find the two elements that appear only once. For example: Given nums = [1, 2, 1, 3, 2, 5], return [3, 5]. Note: The order…

Given an array of integers, every element appears three times except for one. Find that single one. Note:Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory? 这道题是之前那道 Single Number 单独的数字的延伸,那道题的解法…

Given an array of integers, every element appears twice except for one. Find that single one. Note:Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory? 本来是一道非常简单的题,但是由于加上了时间复杂度必须是O(n),并且空间复杂度为O(1)…

操作符 如果源序列是空的 源序列只包含一个元素 源序列包含多个元素 First 抛异常 返回该元素 返回第一个元素 FirstOrDefault 返回default(TSource) 返回该元素 返回第一个元素 Last 抛异常 返回该元素 返回最后一个元素 LastOrDefault 返回default(TSource) 返回该元素 返回最后一个元素 Single 抛异常 返回该元素 抛异常 SingleOrDefault 返回default(TSource) 返回该元素 抛异常  我们拿事实…

最新的效果见 :http://video.sina.com.cn/v/b/124538950-1254492273.html 可处理视频的示例:视频去雾效果 在图像去雾这个领域,几乎没有人不知道<Single Image Haze Removal Using Dark Channel Prior>这篇文章,该文是2009年CVPR最佳论文.作者何凯明博士,2007年清华大学毕业,2011年香港中文大学博士毕业,可谓是功力深厚,感叹于国内一些所谓博士的水平,何这样的博士才可以真正叫做Doctor…

[1]LeetCode 136 Single Number 题意:奇数个数,其中除了一个数只出现一次外,其他数都是成对出现,比如1,2,2,3,3...,求出该单个数. 解法:容易想到异或的性质,两个相同的数异或为0,那么把这串数从头到尾异或起来,最后的数就是要求的那个数. 代码如下: class Solution { public: int singleNumber(vector<int>& nums) { ; ;i<nums.size();i++) sum ^= nums[i…

问题: Given an array of integers, every element appears three times except for one. Find that single one. Note: Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory?   Single Number I 升级版,一个数组中其它数出现了…

Given an array of integers, every element appears twice except for one. Find that single one. Note: Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory? 感谢cnblog博主feiling,这篇博客一方面参考了feiling的博客,也加入了…

Given 2*n + 1 numbers, every numbers occurs twice except one, find it. Have you met this question in a real interview? Yes Example Given [1,2,2,1,3,4,3], return 4 Challenge One-pass, constant extra space. LeetCode上的原题,请参见我之前的博客Single Number. class So…

XiangBai--[AAAI2017]TextBoxes:A Fast Text Detector with a Single Deep Neural Network 目录 作者和相关链接 方法概括 创新点和贡献 方法细节 实验结果 总结与收获点 作者和相关链接 作者 论文下载 廖明辉,石葆光, 白翔, 王兴刚 ,刘文予 代码下载 方法概括 文章核心: 改进版的SSD用来解决文字检测问题 端到端识别的pipeline: Step 1: 图像输入到修改版SSD网络中 + 非极大值抑制(NMS)→…

初入java,使用spring时遇到一个问题,左边是一个接口和实现.右边是service和实现. @Service@Transactional(rollbackFor = Exception.class)public class DefaultSerializeSettingManage implements SerializeSettingService { @Autowired SerializeSettingDAO settingdao; //部署项目时,此行代码引发异常:&*%&(…

Single Number I : Given an array of integers, every element appears twice except for one. Find that single one. Note: Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory? Solution: 解法不少,贴一种: class…

Given an array of integers, every element appears twice except for one. Find that single one. 思路: 最经典的方法,利用两个相同的数异或结果为0的性质,则将整个数组进行异或,相同的数俩俩异或,最后得到的就是那个single number,复杂度是O(n) 代码: class Solution { public: int singleNumber(vector<int>& nums) { int…

Given an array of integers, every element appears twice except for one. Find that single one.Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory? 线性时间完成,不花费多余空间,问题特殊,异或运算就解决了. public class Solutio…

最近做的题记录下. 258. Add Digits Given a non-negative integer num, repeatedly add all its digits until the result has only one digit. For example: Given num = 38, the process is like: 3 + 8 = 11, 1 + 1 = 2. Since 2 has only one digit, return it. int addDigi…

1 Single Sign Out 功能 即单点登出功能.也就是在任意子系统进行登出操作后,其他子系统会自动登出. 实际CAS登出的步骤为 所以每个子系统都需要实现一个sso登出响应. cas-client-core包中有Single Sign Out的Session容器实现. 具体在包 org.jasig.cas.client.session 中. 2 实现Shiro的SSO登出功能 1 实现CasSecurityManager 主要目的是为了在登陆成功后保存 ST票据,并与 Shiro的se…

在进行类转json字符串时,报错JsonException: Max allowed object depth reached while trying to export from type System.Single. ok,实际上是类的属性中有json不能识别的数据类型. JsonData public JsonData(bool boolean); public JsonData(double number); public JsonData(int number); public Js…

Given an array of integers, every element appears three times except for one. Find that single one. Note:Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory? public class Solution { public int sin…

1.错误提示:Cannot have multiple items selected when the SelectionMode is Single. 刚刚在处理两个Listbox时,将其中一个listBoxOne中的数据搬移到另一个Listboxtwo时,第一条数据正确的搬移过去了,但是在移动第二条数据时,就产生如标题所示的错误. 仔细看了listbox的属性,在它的SelectMode属性中有两个值:一个是Single,表明listbox只能容纳一条数据,也就是当你通过Items来添加数据…

单一职责原则(SRP:The Single Responsibility Principle) 一个类应该有且只有一个变化的原因. There should never be more than one reason for a class to change. 为什么将不同的职责分离到单独的类中是如此的重要呢? 因为每一个职责都是一个变化的中心.当需求变化时,这个变化将通过更改职责相关的类来体现. 如果一个类拥有多于一个的职责,则这些职责就耦合到在了一起,那么就会有多于一个原因来导致这个类的变…

Given an array of integers, every element appears twice except for one. Find that single one. 本题利用XOR的特性, X^0 = X, X^X = 0, 并且XOR满足交换律. class Solution(object): def singleNumber(self, nums): """ :type nums: List[int] :rtype: int ""…

Given an array of integers, every element appears three times except for one. Find that single one. Note:Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory? 自己不会做... 搜答案,发现思路真是太巧妙了 关键:统计每一位上出现1的次…

题目: Given an array of integers, every element appears twice except for one. Find that single one. Note:Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory? 要求O(n)算法,还不能有辅助空间.开始用了各种O(n^2)的方法,都超时,后来…

题目: Given an array of integers, every element appears three times except for one. Find that single one. Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory?…

题目描述: Single Number Given an array of integers, every element appears twice except for one. Find that single one. Note: Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory? Single Number II Given…

问题: Given an array of integers, every element appears twice except for one. Find that single one. Note: Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory?   分析: 数组中的数除了一个只出现了一次之外,其它都出现了两次, 要找出只出…

题目:Given an array of integers, every element appears three times except for one. Find that single one. Note:Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory? 思路:一个比较好的方法是从位运算来考虑.每一位是0或1,由于除了一个数…

Given an array of integers, every element appears twice except for one. Find that single one. Note:Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory? 1)使用map class Solution { public: int singleN…