id14. Longest Common Prefix Add to List QuestionEditorial Solution My Submissions
Total Accepted: 137142
Total Submissions: 452531
Difficulty: Easy
Contributors: Admin
Write a function to find the longest common prefix string amongst an array of strings.

QT提供默认的几类只有QMainWindow,QWidget,QDialog三种，这三种窗体是最常见的,QMainWindow带有菜单栏和工具栏的主窗口类，QDialog是各种对话框的几类，而他们全部继承自QWidget.

ID13. Roman to Integer Add to List QuestionEditorial Solution My Submissions
Total Accepted: 117446
Total Submissions: 273074
Difficulty: Easy
Contributors: Admin
Given a roman numeral, convert it to an integer.

Input is guaranteed to be within the range from 1 to 3999.

开始学习使用c++进行QT5学习

QT是一个1998年开始创办的c++库,其界面设计等能力表现不俗,后来被诺基亚收购，之后诺基亚将其开源，后来诺基亚倒闭，QT右digital接着运营。伴随着c++的发展，QT也从QT1发展到QT5，充分运用了c++的新特性。

ID12:Integer to Roman Add to List QuestionEditorial Solution My Submissions
Total Accepted: 85662
Total Submissions: 202008
Difficulty: Medium
Contributors: Admin
Given an integer, convert it to a roman numeral.

Input is guaranteed to be within the range from 1 to 3999.

id 11. Container With Most Water Add to List QuestionEditorial Solution My Submissions
Total Accepted: 105561
Total Submissions: 293689
Difficulty: Medium
Contributors: Admin
Given n non-negative integers a1, a2, …, an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of line i is at (i, ai) and (i, 0). Find two lines, which together with x-axis forms a container, such that the container contains the most water.

Note: You may not slant the container.

hexo 博客非常自由，可以自己随便更改自己想要得东西，在这里给大家分享一些特效。
note:
本改动在NexT主题下进行

卷积神经网络(CNN),训练数据的维度都是相同的,这样经过卷积池化后,得到的特征维度才能相同,进而才能将特征输入到分类器中训练分类器.输入维度相同这个限制太大了,这篇文章主要针对这个缺陷进行了改进,具体地就是加入了空间金字塔池化(Spatial Pyrimid Pooling),使得不同维度的输入最后都能得到相同维度的输出.所以每次在进行输入图片的时候都需要对原始的图片进行crop/warp操作，这样对一些过大过小的图片是不公平的。

Rich feature hierarchies for accurate object detection and semantic segmentation是RBG大神的作品，提出了深度学习用于物体检测的开山之作r-cnn (Regions with Convolutional Neural Network Features)

id8:String to Integer (atoi) QuestionEditorial Solution My Submissions
Total Accepted: 136242
Total Submissions: 989232
Difficulty: Easy
Contributors: Admin
Implement atoi to convert a string to an integer.