├── lintcode-training ├── Closest Number in Sorted Array.java ├── Closest Number in Sorted Array.py ├── SubsetsII.py ├── SubsetsII.cpp └── SubsetsII.java ├── Linux ├── Linux Server Configuration │ ├── Linux1 │ ├── Linux2 │ ├── Linux3 │ ├── Linux4 │ ├── Linux5 │ ├── Linux6 │ ├── Linux7 │ ├── Linux8 │ ├── Linux9 │ ├── 4.Linux Server Configuration Webcasts.md │ ├── 1.Project Overview.md │ ├── Linux Server Configuration.md │ ├── 2.Project Details.md │ ├── Vagrant Commands.md │ └── Get Started on Lightsail.md └── Web Application Servers │ ├── 1.Introduction.md │ ├── 3.Installing Apache.md │ ├── 6.Installing PostgreSql.md │ ├── 5.Your Firs WSGI Application.md │ ├── 4.Installing mod_wsgi.md │ └── 2.Vagrant Prerequisites.md ├── README.md ├── New students must see.md ├── .gitignore ├── hello.c ├── Python └── Movie Trailer Website.md ├── LICENSE └── los └── imgLos.min.js /lintcode-training/Closest Number in Sorted Array.java: -------------------------------------------------------------------------------- 1 | -------------------------------------------------------------------------------- /Linux/Linux Server Configuration/Linux1: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/YuHongJun/leetcode-training/HEAD/Linux/Linux Server Configuration/Linux1 -------------------------------------------------------------------------------- /Linux/Linux Server Configuration/Linux2: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/YuHongJun/leetcode-training/HEAD/Linux/Linux Server Configuration/Linux2 -------------------------------------------------------------------------------- /Linux/Linux Server Configuration/Linux3: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/YuHongJun/leetcode-training/HEAD/Linux/Linux Server Configuration/Linux3 -------------------------------------------------------------------------------- /Linux/Linux Server Configuration/Linux4: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/YuHongJun/leetcode-training/HEAD/Linux/Linux Server Configuration/Linux4 -------------------------------------------------------------------------------- /Linux/Linux Server Configuration/Linux5: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/YuHongJun/leetcode-training/HEAD/Linux/Linux Server Configuration/Linux5 -------------------------------------------------------------------------------- /Linux/Linux Server Configuration/Linux6: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/YuHongJun/leetcode-training/HEAD/Linux/Linux Server Configuration/Linux6 -------------------------------------------------------------------------------- /Linux/Linux Server Configuration/Linux7: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/YuHongJun/leetcode-training/HEAD/Linux/Linux Server Configuration/Linux7 -------------------------------------------------------------------------------- /Linux/Linux Server Configuration/Linux8: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/YuHongJun/leetcode-training/HEAD/Linux/Linux Server Configuration/Linux8 -------------------------------------------------------------------------------- /Linux/Linux Server Configuration/Linux9: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/YuHongJun/leetcode-training/HEAD/Linux/Linux Server Configuration/Linux9 -------------------------------------------------------------------------------- /Linux/Web Application Servers/1.Introduction.md: -------------------------------------------------------------------------------- 1 | Now that you have a shiny new server that is safe and secure, it’s time to turn it into a web application server! By the end of this lesson you will accomplish the following: 2 | 3 | Use the (http://httpd.apache.org/)[Apache HTTP] Server to respond to HTTP requests and serve a static webpage 4 | Configure Apache to hand-off specific requests to Python providing the ability to develop dynamic websites 5 | Setup (PostgreSQL)[https://www.postgresql.org/] and write a simple Python application that generates a data-driven website 6 | At the end of this lesson, the response cycle will resemble this: -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # leetcode-training 2 | Algorithm training. 3 | https://skygragon.github.io/leetcode-cli/demo.html 4 | 5 | java $: javac hello.java 6 | java $: java hello 7 | 8 | 9 | c $: gcc hello.c 10 | 如果没有错误会生成a.out可执行文件 11 | c $: ./a.out 12 | 13 | 14 | 15 | # leetcode cli 16 | ``` 17 | leetcode version 18 | 19 | leetcode help 20 | 21 | leetcode help user 22 | 23 | leetcode user -l 24 | 25 | leetcode help list 26 | 27 | leetcode list 28 | 29 | leetcode list -q h array 30 | 31 | leetcode show 1 32 | 33 | leetcode show 1 -gx 34 | 35 | vim 1.two-sum.cpp 36 | 37 | leetcode test 1.two-sum.cpp 38 | 39 | leetcode test 1.two-sum.cpp -t '[1,2,3]\n3' 40 | ``` 41 | 42 | -------------------------------------------------------------------------------- /lintcode-training/Closest Number in Sorted Array.py: -------------------------------------------------------------------------------- 1 | class Solution: 2 | # @param {int[]} A an integer array sorted in ascending order 3 | # @param {int} target an integer 4 | # @return {int} an integer 5 | def closestNumber(self, A, target): 6 | if not A: 7 | return -1 8 | start, end = 0, len(A) - 1 9 | while start + 1 < end: 10 | mid = (start + end) // 2 11 | print(start,end,mid) 12 | if A[mid] == target: 13 | return mid 14 | elif A[mid] > target: 15 | end = mid 16 | else: 17 | start = mid 18 | if A[end] - target > target - A[start]: 19 | return start 20 | else: 21 | return end 22 | 23 | if __name__ == '__main__': 24 | result = Solution().closestNumber([1, 4, 6], 5) 25 | print(result) -------------------------------------------------------------------------------- /Linux/Linux Server Configuration/4.Linux Server Configuration Webcasts.md: -------------------------------------------------------------------------------- 1 | Webcasts for the Linux Server Configuration Project 2 | 3 | Need some additional help getting started with the Linux Server Configuration Project, or simply curious and want to learn a little bit more? Watch the following Webcasts! 4 | 5 | These webcasts are recordings of live Q&A sessions and demos. As always, you should read the appropriate rubric for your project thoroughly before you begin work on any project and double check the rubric before submitting. The videos were made by Udacity's coaches. Think of them as extra supplemental materials. 6 | 7 | The webcasts for the Linux Server Configuration Project include: 8 | 9 | [SSH: How to access a remote server and edit files](https://www.youtube.com/watch?v=HcwK8IWc-a8) 10 | 11 | [Intro to TMux](https://www.youtube.com/watch?v=hZ0cUWWixqU) 12 | 13 | [Deploying a Flask App with Heroku](https://www.youtube.com/watch?v=5UNAy4GzQ5E) 14 | 15 | Happy Learning! -------------------------------------------------------------------------------- /Linux/Web Application Servers/3.Installing Apache.md: -------------------------------------------------------------------------------- 1 | You’ll setup your web application server one piece at a time, testing each as you progress. The first step is to get your server responding to HTTP requests. To do this, you’ll use Apache HTTP Server - the most commonly installed web server on the Internet with roughly 47% market share. 2 | 3 | Install Apache using your package manager with the following command: `sudo apt-get install apache2` Confirm Apache is working by visiting http://localhost:8080 in your browser. You should see the following page: 4 | 5 | Default Ubuntu Start Page 6 | 7 | Apache, by default, serves its files from the `/var/www/html` directory. If you explore this directory you will find a file called `index.html` and if you review that file you will see it contains the HTML of the page you see when you visit http://localhost:8080. 8 | 9 | Exercise 10 | Update the index.html to simply display “Hello, World!” and refresh your browser to see your new page. -------------------------------------------------------------------------------- /lintcode-training/SubsetsII.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python3 2 | # -*- coding:utf-8 -*- 3 | from functools import reduce 4 | 5 | __author__ = 'Demi Yu' 6 | 7 | 8 | # Given a collection of integers that might contain duplicates, S, return all possible subsets. 9 | # Note: Elements in a subset must be in non-descending order. The solution set must not contain duplicate subsets. 10 | # For example, If S = [1,2,2], a solution is: 11 | # [ [2], [1], [1,2,2], [2,2], [1,2], [] ] 12 | 13 | 14 | class Solution: 15 | def subsetsWithDup(self, S): 16 | S.sort() 17 | p = [[S[x] for x in range(len(S)) if i >> x & 1] for i in range(2 ** len(S))] 18 | func = lambda x, y: x if y in x else x + [y] 19 | p = reduce(func, [[], ] + p) 20 | return list(reversed(p)) 21 | 22 | 23 | # result = Solution().subsetsWithDup([1,2,2]) 24 | # print(result) 25 | 26 | if __name__ == '__main__': 27 | result = Solution().subsetsWithDup([1, 2, 2]) 28 | print(result) 29 | -------------------------------------------------------------------------------- /Linux/Web Application Servers/6.Installing PostgreSql.md: -------------------------------------------------------------------------------- 1 | Most web applications require persistent data storage, typically using a database server. 2 | You will now install PostgreSQL to server your data using the command `sudo apt-get install postgresql`. 3 | 4 | Since you are installing your web server and database server on the same machine, you do not need to modify your firewall settings. Your web server will communicate with the database via an internal mechanism that does not cross the boundaries of the firewall. If you were installing your database on a separate machine, you would need to modify the firewall settings on both the web server and the database server to permit these requests. 5 | 6 | Exercise 7 | Update your `/var/www/html/myapp.wsgi` application so that it successfully connects to your database, queries a table for data and presents that piece of data rather than the text Hello World!. You will need to create a table and populate it with data of your choosing, then query it from your app. 8 | 9 | This task is easier said than done, so use your research skills and don't be afraid to break things. Good luck! -------------------------------------------------------------------------------- /Linux/Linux Server Configuration/1.Project Overview.md: -------------------------------------------------------------------------------- 1 | Project Overview 2 | You will take a baseline installation of a Linux server and prepare it to host your web applications. You will secure your server from a number of attack vectors, install and configure a database server, and deploy one of your existing web applications onto it. 3 | 4 | Why this Project? 5 | A deep understanding of exactly what your web applications are doing, how they are hosted, and the interactions between multiple systems are what define you as a Full Stack Web Developer. In this project, you’ll be responsible for turning a brand-new, bare bones, Linux server into the secure and efficient web application host your applications need. 6 | 7 | What will I Learn? 8 | You will learn how to access, secure, and perform the initial configuration of a bare-bones Linux server. You will then learn how to install and configure a web and database server and actually host a web application. 9 | 10 | How does this Help my Career? 11 | Deploying your web applications to a publicly accessible server is the first step in getting users 12 | Properly securing your application ensures your application remains stable and that your user’s data is safe -------------------------------------------------------------------------------- /lintcode-training/SubsetsII.cpp: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | using namespace std; 4 | 5 | 6 | class Solution { 7 | public: 8 | vector > result; 9 | bool equls( vector a, vector b){ 10 | if (a.size() != b.size()) 11 | return false; 12 | int cnt = a.size(); 13 | for (int i = 0; i < cnt;++i) 14 | if (a[i]!=b[i]) return false; 15 | return true; 16 | } 17 | void dfs(vector tmp, int x , vector nums) { 18 | if (x == nums.size()) { 19 | int cnt = result.size(); 20 | for ( int i = 0; i < cnt ; ++i) 21 | if ( equls(result[i], tmp) ) 22 | return ; 23 | result.push_back(tmp); 24 | return ; 25 | } 26 | dfs(tmp, x + 1, nums); 27 | tmp.push_back(nums[x]); 28 | dfs(tmp, x + 1, nums); 29 | } 30 | vector > subsetsWithDup(vector &nums){ 31 | sort(nums.begin(), nums.end()); 32 | vector tmp; 33 | dfs(tmp, 0 , nums) ; 34 | // write your code here 35 | return result; 36 | } 37 | }; 38 | 39 | //int main(){ 40 | // Solution result; 41 | // 42 | // result.subsetsWithDup([1, 2, 2]); 43 | //} -------------------------------------------------------------------------------- /Linux/Web Application Servers/5.Your Firs WSGI Application.md: -------------------------------------------------------------------------------- 1 | [WSGI](http://wsgi.readthedocs.io/en/latest/) is a specification that describes how a web server communicates with web applications. 2 | Most if not all Python web frameworks are WSGI compliant, including [Flask](http://flask.pocoo.org/docs/0.10/deploying/mod_wsgi/) and [Django](https://docs.djangoproject.com/en/1.8/howto/deployment/wsgi/); but to quickly test if you have your Apache configuration correct you’ll write a very basic WSGI application. 3 | 4 | You just defined the name of the file you need to write within your Apache configuration by using the `WSGIScriptAlias` directive. Despite having the extension `.wsgi`, these are just Python applications. 5 | Create the `/var/www/html/myapp.wsgi` file using the command `sudo nano /var/www/html/myapp.wsgi`. Within this file, write the following application: 6 | ``` 7 | def application(environ, start_response): 8 | status = '200 OK' 9 | output = 'Hello World!' 10 | 11 | response_headers = [('Content-type', 'text/plain'), ('Content-Length', str(len(output)))] 12 | start_response(status, response_headers) 13 | 14 | return [output] 15 | ``` 16 | This application will simply print return `Hello World!` 17 | along with the required HTTP response headers. After saving this file you can reload http://localhost:8080 to see your application run in all its glory! 18 | -------------------------------------------------------------------------------- /Linux/Web Application Servers/4.Installing mod_wsgi.md: -------------------------------------------------------------------------------- 1 | When Apache receives a request it has a number of ways it can respond. What you’ve seen thus far is the simplest method of operation, Apache just returns a file requested or the `index.html` file if no file is defined within the URL. 2 | 3 | But, Apache can do so much more! You’ll now configure Apache to hand-off certain requests to an application handler - mod_wsgi. The first step in this process is to install mod_wsgi: `sudo apt-get install libapache2-mod-wsgi`. 4 | 5 | You then need to configure Apache to handle requests using the WSGI module. You’ll do this by editing the `/etc/apache2/sites-enabled/000-default.conf` file. This file tells Apache how to respond to requests, where to find the files for a particular site and much more. You can read up on everything this file can do within the [Apache documentation](https://httpd.apache.org/docs/2.2/configuring.html) . 6 | 7 | For now, add the following line at the end of the `` block, right before the closing `` line: `WSGIScriptAlias / /var/www/html/myapp.wsgi` 8 | 9 | Finally, restart Apache with the `sudo apache2ctl restart` command. 10 | 11 | You might get a warning saying "Could not reliably determine the server's fully qualified domain name". If you do, don't worry about it. Check out [this AskUbuntu thread](https://askubuntu.com/questions/256013/apache-error-could-not-reliably-determine-the-servers-fully-qualified-domain-n) for a discussion of the cause of this message. -------------------------------------------------------------------------------- /New students must see.md: -------------------------------------------------------------------------------- 1 | http://www.jiuzhang.com/qa/3/ 2 | 3 | 1. 面试时需要写注释吗？ 4 | >一般不需要，具体可以问面试官 5 | 6 | 2. 刷题刷到什么程度可以去面试了呢？ 7 | >lintcode 把200-300个题目刷两遍， 其中刷过的题目60%题目做到bug free，就比较好啦。 8 | 9 | 3. 面试英语到什么程度? 10 | >英语不是重点，能沟通就可以了，技术，算法才是重点 11 | 12 | 4. 公司冷冻期多久? 13 | >一般1年或者半年，不同公司不一样 14 | 15 | 5. 前端工程师/数据科学家需要刷题么？ 16 | >需要，60%考算法，40%考相关背景技术 17 | 18 | 6. GPA重要么？ 19 | >北美GPA3.5以上可以写到简历上，GPA只是敲门砖，不要太低，剩下就看个人技术。 20 | 21 | 7. 湾区/加州找工作有好处么？ 22 | >至少面试的时候，可以少一门面试，或者直接给你onsite 23 | 24 | 8. 在哪里可以找到面经? 25 | >glassdoor, 一亩三分地，themianjing.com, mitbbs 26 | 27 | 9. c++/java/python等等 哪个语言找工作更好？可以用python面试么？ 28 | >语言不是重点，重点的是你会什么，你做过什么项目。 29 | 30 | 10. FLAG面试难度？ 31 | >大概lintcode/leetcode medium 偏难一点 32 | 33 | 11. 女生面试是否真的比男生要求低一些好进一些？ 34 | >一些公司会要求公司员工平衡，对女生的要求会比男生低一点。 35 | 36 | 12. 毕业多久算new grad 呢？ 37 | >不同公司不一样。 一般是一年期来算。 38 | 39 | 13. 哪里可以投简历找内推? 40 | >找内推： mitbbs，一亩三分地,linkedin 41 | 42 | >投简历： indeed，monster,hired.com,linkedin,readyforce.com 43 | 44 | 14. 投完简历没有结果怎么办？ 45 | >一般投完要等2-3周才会有结果，如果没有结果，可以让内推的同学帮你催一催。 46 | 47 | 15. 面试完后多久出结果？ 48 | >一般面试完后要2周才会有结果，一些小公司会比较快，有一些面的比较好的直接就可以当天或者第二天就出结果。 49 | 50 | 16. 面试时碰到做过的题，该如何表现？是否要告诉面试官自己做过？ 51 | >比较诚实的做法是告诉面试官，但是通常面试官面试前只准备了2-3个题目，如果你告诉了面试官，面试官只有面下一个题目，一般下一个题目都会比较难，但是如果你又做不出来又比较吃亏相当于一道题目都没做，所以建议还是装作想一想，不给面试官说之前做过，实际上很可能大多是做过的，因为题目非常类似lintcode或者leetcode 52 | 53 | 17. 面实习和面试full time有区别么？ 54 | >题目是一样的。 实际上题目是一样。只是面实习的要求会比较full time的要求低。 55 | 56 | 18. h1b申请日期是多久？ 57 | >每年4月15日结束 58 | 59 | 19. 如果只有国内的实习经历，在美国找full-time的CS工作是不是比较困难? 60 | >是比较难，但是并不是没有可能，也不是没有机会，多投简历，总会有机会的，成功例子还是很多的 61 | 62 | 20. 在哪里可以看程序员的工资。 63 | >paysa 比较准确, glassdoor数据比较多 -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # Byte-compiled / optimized / DLL files 2 | __pycache__/ 3 | *.py[cod] 4 | *$py.class 5 | 6 | # C extensions 7 | *.so 8 | 9 | # Distribution / packaging 10 | .Python 11 | env/ 12 | build/ 13 | develop-eggs/ 14 | dist/ 15 | downloads/ 16 | eggs/ 17 | .eggs/ 18 | lib/ 19 | lib64/ 20 | parts/ 21 | sdist/ 22 | var/ 23 | wheels/ 24 | *.egg-info/ 25 | .installed.cfg 26 | *.egg 27 | 28 | # PyInstaller 29 | # Usually these files are written by a python script from a template 30 | # before PyInstaller builds the exe, so as to inject date/other infos into it. 31 | *.manifest 32 | *.spec 33 | 34 | # Installer logs 35 | pip-log.txt 36 | pip-delete-this-directory.txt 37 | 38 | # Unit test / coverage reports 39 | htmlcov/ 40 | .tox/ 41 | .coverage 42 | .coverage.* 43 | .cache 44 | nosetests.xml 45 | coverage.xml 46 | *.cover 47 | .hypothesis/ 48 | 49 | # Translations 50 | *.mo 51 | *.pot 52 | 53 | # Django stuff: 54 | *.log 55 | local_settings.py 56 | 57 | # Flask stuff: 58 | instance/ 59 | .webassets-cache 60 | 61 | # Scrapy stuff: 62 | .scrapy 63 | 64 | # Sphinx documentation 65 | docs/_build/ 66 | 67 | # PyBuilder 68 | target/ 69 | 70 | # Jupyter Notebook 71 | .ipynb_checkpoints 72 | 73 | # pyenv 74 | .python-version 75 | 76 | # celery beat schedule file 77 | celerybeat-schedule 78 | 79 | # SageMath parsed files 80 | *.sage.py 81 | 82 | # dotenv 83 | .env 84 | 85 | # virtualenv 86 | .venv 87 | venv/ 88 | ENV/ 89 | 90 | # Spyder project settings 91 | .spyderproject 92 | .spyproject 93 | 94 | # Rope project settings 95 | .ropeproject 96 | 97 | # mkdocs documentation 98 | /site 99 | 100 | # mypy 101 | .mypy_cache/ 102 | .idea/ 103 | -------------------------------------------------------------------------------- /lintcode-training/SubsetsII.java: -------------------------------------------------------------------------------- 1 | import java.util.ArrayList; 2 | class Solution { 3 | /** 4 | * @param nums: A set of numbers. 5 | * @return: A list of lists. All valid subsets. 6 | */ 7 | public ArrayList> subsetsWithDup(int[] nums) { 8 | // write your code here 9 | ArrayList> results = new ArrayList<>(); 10 | if (nums == null) return results; 11 | 12 | if (nums.length == 0) { 13 | results.add(new ArrayList()); 14 | return results; 15 | } 16 | Arrays.sort(nums); 17 | 18 | ArrayList subset = new ArrayList<>(); 19 | helper(nums, 0, subset, results); 20 | return results; 21 | } 22 | public void helper(int[] nums, int startIndex, ArrayList subset, ArrayList> results){ 23 | results.add(new ArrayList(subset)); 24 | for(int i=startIndex; i> a=s.subsetsWithDup(i); 41 | } 42 | } 43 | 44 | 45 | // class SubsetsII extends Solution{ 46 | // public static void main(int[] nums){ 47 | // SubsetsII a1=new SubsetsII(); 48 | // a1.subsetsWithDup([1, 2, 2]); 49 | 50 | // } 51 | 52 | // } 53 | 54 | 55 | -------------------------------------------------------------------------------- /Linux/Web Application Servers/2.Vagrant Prerequisites.md: -------------------------------------------------------------------------------- 1 | If you’re using the Vagrant virtual machine from earlier in this course you will need to make a slight modification to the configuration of this machine to make your web server accessible. This step is not related to configuring a web server in general, it’s just a condition of our current environment. You would not need to complete this step if you were configuring a machine from a cloud provider like Amazon Web Services. 2 | 3 | Open the `Vagrantfile` in your project directory and look for the following section near lines 20-23: 4 | ``` 5 | # Create a forwarded port mapping which allows access to a specific port 6 | # within the machine from a port on the host machine. In the example below, 7 | # accessing "localhost:8080" will access port 80 on the guest machine. 8 | # config.vm.network "forwarded_port", guest: 80, host: 8080 9 | ``` 10 | Uncomment the last line: 11 | 12 | ```config.vm.network "forwarded_port", guest: 80, host: 8080``` 13 | Save the file and start your Vagrant virtual machine using the `vagrant up` command. 14 | 15 | If your virtual machine is currently running, you can reload it using the `vagrant reload` command. 16 | 17 | This configuration change will setup port forwarding from port 8080 on the host machine (your computer) to the guest machine (your Vagrant virtual machine) when your virtual machine is running. 18 | This will allow you to access your web server using the URL http://localhost:8080. 19 | 20 | Compatibility note 21 | On some Windows systems, you will need to add one more argument to the line to ensure that the VM network connects to the correct interface on your host computer: 22 | 23 | ```config.vm.network "forwarded_port", guest: 80, host: 8080, host_ip: "127.0.0.1"``` -------------------------------------------------------------------------------- /Linux/Linux Server Configuration/Linux Server Configuration.md: -------------------------------------------------------------------------------- 1 | 项目提交 2 | 3 | You will take a baseline installation of a Linux distribution on a virtual machine and prepare it to host your web applications, to include installing updates, securing it from a number of attack vectors and installing/configuring web and database servers. 4 | 5 | Note: If you have no experience working in the shell we recommend starting with [Linux Command Line Basics](https://www.udacity.com/course/viewer#!/c-ud595-nd). 6 | Otherwise, you can jump straight into [Configuring Linux Web Servers](https://classroom.udacity.com/courses/ud299-nd). 7 | 8 | Evaluation 9 | Your project will be evaluated by a Udacity Code Reviewer according to the rubric below. Be sure to review it thoroughly before you submit. All criteria must "meet specifications" in order to pass. 10 | 11 | Click here to view the rubric 12 | 13 | Submission 14 | Please follow these steps to properly submit this project: 15 | 16 | Create a new GitHub repository and add a file named `README.md`. 17 | Your README.md file should include all of the following: 18 | i. The IP address and SSH port so your server can be accessed by the reviewer. 19 | ii. The complete URL to your hosted web application. 20 | iii. A summary of software you installed and configuration changes made. 21 | iv. A list of any third-party resources you made use of to complete this project. 22 | Locate the SSH key you created for the `grader` user. 23 | During the submission process, paste the contents of the grader user's SSH key into the "Notes to Reviewer" field. 24 | When you're ready to submit your project, click here and follow the instructions. Due to the high volume of submissions we receive, please allow up up to 7 business days for your evaluation to be returned. 25 | 26 | If you are having any problems submitting your project or wish to check up on the status of your evaluation, please email us at fullstack-project@udacity.com. 27 | 28 | Next Steps 29 | You will get an email as soon as your reviewer has feedback for you. Congratulations on making it this far in the Nanodegree! You're almost finished! 30 | 你还没有提交此项目提交项目 -------------------------------------------------------------------------------- /Linux/Linux Server Configuration/2.Project Details.md: -------------------------------------------------------------------------------- 1 | How will I complete this project? 2 | This project is linked to the Configuring Linux Web Servers course, which teaches you to secure and set up a Linux server. By the end of this project, you will have one of your web applications running live on a secure web server. 3 | 4 | To complete this project, you'll need a Linux server instance. 5 | We recommend using [Amazon Lightsail](https://lightsail.aws.amazon.com) 6 | for this. If you don't already have an Amazon Web Services account, you'll need to set one up. Once you've done that, here are the steps to complete this project. 7 | 8 | Get your server. 9 | 1. Start a new Ubuntu Linux server instance on [Amazon Lightsail](https://lightsail.aws.amazon.com). There are full details on setting up your Lightsail instance on the next page. 10 | 2. Follow the instructions provided to SSH into your server. 11 | 12 | Secure your server. 13 | 3. Update all currently installed packages. 14 | 4. Change the SSH port from 22 to 2200. Make sure to configure the Lightsail firewall to allow it. 15 | 5. Configure the Uncomplicated Firewall (UFW) to only allow incoming connections for SSH (port 2200), HTTP (port 80), and NTP (port 123). 16 | 17 | >Warning: When changing the SSH port, make sure that the firewall is open for port 2200 first, so that you don't lock yourself out of the server. 18 | `Review this video(Configuring Ports in UFW)` for details! When you change the SSH port, the Lightsail instance will no longer be accessible through the web app 'Connect using SSH' button. The button assumes the default port is being used. There are instructions on the same page for connecting from your terminal to the instance. Connect using those instructions and then follow the rest of the steps. 19 | 20 | Give `grader` access. 21 | In order for your project to be reviewed, the grader needs to be able to log in to your server. 22 | 23 | 6. Create a new user account named `grader`. 24 | 7. Give `grader` the permission to `sudo`. 25 | 8. Create an SSH key pair for `grader` using the `ssh-keygen` tool. 26 | 27 | Prepare to deploy your project. 28 | 9. Configure the local timezone to UTC. 29 | 10. Install and configure Apache to serve a Python mod_wsgi application. 30 | 11. Install and configure PostgreSQL: 31 | 32 | >Do not allow remote connections 33 | 34 | >Create a new database user named catalog that has limited permissions to your `catalog` application database. 35 | 36 | 12. Install `git`. 37 | 38 | Deploy the Item Catalog project. 39 | 13. Clone and setup your Item Catalog project from the Github repository you created earlier in this Nanodegree program. 40 | 14. Set it up in your server so that it functions correctly when visiting your server’s IP address in a browser. 41 | Make sure that your `.git` directory is not publicly accessible via a browser! -------------------------------------------------------------------------------- /Linux/Linux Server Configuration/Vagrant Commands.md: -------------------------------------------------------------------------------- 1 | Type vagrant status 2 | This command will show you the current status of the virtual machine. It should currently read “default running (virtualbox)” along with some other information. 3 | Type vagrant suspend 4 | This command suspends your virtual machine. All of your work is saved and the machine is put into a “sleep mode” of sorts. The machines state is saved and it’s very quick to stop and start your work. You should use this command if you plan to just take a short break from your work but don’t want to leave the virtual machine running. 5 | Type vagrant up 6 | This gets your virtual machine up and running again. Notice we didn’t have to redownload the virtual machine image, since it’s already been downloaded. 7 | Type vagrant ssh 8 | This command will actually connect to and log you into your virtual machine. Once done you will see a few lines of text showing various performance statistics of the virtual machine along with a new command line prompt that reads vagrant@vagrant-ubuntu-trusty-64:~$ 9 | Here are a few other important commands that we’ll discuss but you do not need to practice at this time: 10 | 11 | vagrant halt 12 | This command halts your virtual machine. All of your work is saved and the machine is turned off - think of this as “turning the power off”. It’s much slower to stop and start your virtual machine using this command, but it does free up all of your RAM once the machine has been stopped. You should use this command if you plan to take an extended break from your work, like when you are done for the day. The command vagrant up will turn your machine back on and you can continue your work. 13 | vagrant destroy 14 | This command destroys your virtual machine. Your work is not saved, the machine is turned off and forgotten about for the most part. Think of this as formatting the hard drive of a computer. You can always use vagrant up to relaunch the machine but you’ll be left with the baseline Linux installation from the beginning of this course. You should not have to use this command at any time during this course unless, at some point in time, you perform a task on the virtual machine that makes it completely inoperable. 15 | 16 | ``` 17 | pwd 18 | ls -al 19 | 20 | ls -al /home/ubuntu/.ssh 21 | 22 | cat /etc/apt/sources.list 资源ubuntu列表 23 | 24 | sudo apt-get update 检查是否最新软件 25 | 26 | sudo apt-get upgrade 可更新软件列表 27 | 28 | man apt-get 可执行命令列表 29 | 30 | sudo apt-get autoremove 自动删除 31 | 32 | sudo apt-get install finger 33 | 34 | packages.ubuntu.com 安装包名字搜索 35 | 36 | Apache Http Server=> apache2 37 | 38 | PostgreSQL=> postgresql 39 | 40 | Memcache=> memcached 41 | 42 | finger 43 | 44 | finger vagrant 45 | 46 | cat /etc/passwd 47 | 48 | sudo adduser student 创建用户 49 | 50 | ssh student@127.0.0.1 -p 2222 新命令行 用新用户连接ssh。会提示没有权限 51 | 52 | 去root账号 vagrant 添加权限 53 | 54 | vagrant$: sudo cat /etc/sudoers 55 | vagrant$: sudo ls /etc/sudoers.d 56 | vagrant$: sudo cp /etc/sudoers.d/vagrant /etc/sudoers.d/student 57 | vagrant$: sudo nano /etc/sudoers.d/student 58 | 59 | vagrant$: sudo passwd -e student 强制学士在下次登录时 重置自己的密码 60 | 61 | 62 | ``` 63 | 64 | 65 | -------------------------------------------------------------------------------- /hello.c: -------------------------------------------------------------------------------- 1 | #include 2 | 3 | struct queue 4 | 5 | { 6 | 7 | int data[1000]; 8 | 9 | int head; 10 | 11 | int tail; 12 | 13 | }; 14 | 15 | struct stack 16 | 17 | { 18 | 19 | int data[10]; 20 | 21 | int top; 22 | 23 | }; 24 | 25 | int main() 26 | 27 | { 28 | 29 | struct queue q1,q2; 30 | 31 | struct stack s; 32 | 33 | int book[10]; 34 | 35 | int i,t; 36 | 37 | //初始化队列 38 | 39 | q1.head=1; q1.tail=1; 40 | 41 | q2.head=1; q2.tail=1; 42 | 43 | //初始化栈 44 | 45 | s.top=0; 46 | 47 | //初始化用来标记的数组，用来标记哪些牌已经在桌上 48 | 49 | for(i=1;i<=9;i++) 50 | 51 | book[i]=0; 52 | 53 | //依次向队列插入6个数 54 | 55 | //小哼手上的6张牌 56 | 57 | for(i=1;i<=6;i++) 58 | 59 | { 60 | 61 | scanf("%d",&q1.data[q1.tail]); 62 | 63 | q1.tail++; 64 | 65 | } 66 | 67 | //小哈手上的6张牌 68 | 69 | for(i=1;i<=6;i++) 70 | 71 | { 72 | 73 | scanf("%d",&q2.data[q2.tail]); 74 | 75 | q2.tail++; 76 | 77 | } 78 | 79 | while(q1.head0) //如果桌上有牌则依次输出桌上的牌 192 | 193 | { 194 | 195 | printf("\n桌上的牌是"); 196 | 197 | for(i=1;i<=s.top;i++) 198 | 199 | printf(" %d",s.data[i]); 200 | 201 | } 202 | 203 | else 204 | 205 | printf("\n桌上已经没有牌了"); 206 | 207 | } 208 | 209 | else 210 | 211 | { 212 | 213 | printf("小哈win\n"); 214 | 215 | printf("小哈当前手中的牌是"); 216 | 217 | for(i=q2.head;i<=q2.tail-1;i++) 218 | 219 | printf(" %d",q2.data[i]); 220 | 221 | if(s.top>0) //如果桌上有牌则依次输出桌上的牌 222 | 223 | { 224 | 225 | printf("\n桌上的牌是"); 226 | 227 | for(i=1;i<=s.top;i++) 228 | 229 | printf(" %d",s.data[i]); 230 | 231 | } 232 | 233 | else 234 | 235 | printf("\n桌上已经没有牌了"); 236 | 237 | } 238 | 239 | getchar();getchar(); 240 | 241 | return 0; 242 | } -------------------------------------------------------------------------------- /Linux/Linux Server Configuration/Get Started on Lightsail.md: -------------------------------------------------------------------------------- 1 | Get started on Lightsail 2 | We're recommending `Amazon Lightsail` for this project. If you prefer, you can use any other service that gives you a publicly accessible Ubuntu Linux server. But Lightsail works pretty well and it's what we've tested. 3 | 4 | There are a few things you need to do when you create your server instance. 5 | 6 | 1. Log in! 7 | First, log in to Lightsail. If you don't already have an Amazon Web Services account, you'll be prompted to create one. 8 | 9 | 10 | `Linux1` 11 | 12 | Amazon Web Services login page. 13 | 2. Create an instance. 14 | Once you're logged in, Lightsail will give you a friendly message with a robot on it, prompting you to create an instance. 15 | Lightsail instance is a Linux server running on a virtual machine inside an Amazon datacenter. 16 | 17 | `Linux2` 18 | 19 | When you have no instances, Lightsail gives you a picture of an orange robot and suggests that you create an instance. 20 | 3. Choose an instance image: Ubuntu 21 | Lightsail supports a lot of different instance types. An instance image is a particular software setup, including an operating system and optionally built-in applications. 22 | 23 | For this project, you'll want a plain Ubuntu Linux image. 24 | There are two settings to make here. First, choose "OS Only" (rather than "Apps + OS"). 25 | Second, choose Ubuntu as the operating system. 26 | 27 | `Linux3` 28 | 29 | When you create an instance, Lightsail asks what kind you want. 30 | For this project, choose an "OS Only" instance with Ubuntu. 31 | 4. Choose your instance plan. 32 | The instance plan controls how powerful of a server you get. It also controls how much money they want to charge you. For this project, the lowest tier of instance is just fine. And as long as you complete the project within a month and shut your instance down, the price will be zero. 33 | 34 | `Linux4` 35 | 36 | Lightsail's options for instance pricing. 37 | For this project, pick the lowest one to get free-tier access. 38 | Be aware: If you enable additional features in Lightsail, you may be charged extra for them. 39 | 5. Give your instance a hostname. 40 | Every instance needs a unique hostname. You can use any name you like, as long as it doesn't have spaces or unusual characters in it. Your instance's name will be visible to you and to the project reviewer. 41 | `Linux5` 42 | 43 | I've named my instance `silly-name-here`. 44 | 6. Wait for it to start up. 45 | It may take a few minutes for your instance to start up. 46 | `Linux6` 47 | While your instance is starting up, Lightsail shows you a grayed-out display. 48 | 49 | `Linux7` 50 | Once your instance is running, the display gets brighter. 51 | 7. It's running; let's use it! 52 | Once your instance has started up, you can log into it with SSH from your browser. 53 | 54 | The public IP address of the instance is displayed along with its name. 55 | In the above picture it's `54.84.49.254`. 56 | The DNS name of this instance is `ec2-54-84-49-254.compute-1.amazonaws.com`. 57 | `Linux8` 58 | 59 | The main page for my `silly-name-here` instance. 60 | The big orange "Connect using SSH" button is the next step. 61 | Explore the other tabs of this user interface to find the Lightsail firewall and other settings. You'll need to configure the Lightsail firewall as one step of the project. 62 | 63 | When you SSH in, you'll be logged as the `ubuntu` user. When you want to execute commands as `root`, you'll need to use the `sudo` command to do it. `Review sudo here if you need a refresher`! 64 | 65 | `Linux9` 66 | 67 | An SSH window logged into the server instance. 68 | From here, it's just like any other Linux server. 69 | 8. Project time. 70 | Now that you have a working instance, you can get right into the project. -------------------------------------------------------------------------------- /Python/Movie Trailer Website.md: -------------------------------------------------------------------------------- 1 | 2 | How will I complete this project? 3 | This project is connected to the Programming Foundations with Python course, but depending on your background knowledge you may not need the entirety of the course to complete this project. Here's what you should do: 4 | 5 | 1. Install [Python](https://www.python.org/) 6 | 7 | 2. Create a data structure (i.e. a Python Class) to store your favorite movies, including movie title, box art URL (or poster URL) and a YouTube link to the movie trailer. 8 | 9 | 3. Create multiple instances of that Python Class to represent your favorite movies; group all the instances together in a list. 10 | 11 | 4. To help you generate a website that displays these movies, we have provided a starter code repository that contains a Python module called `fresh_tomatoes.py`. 12 | To get started, `fork` this [repository](https://github.com/udacity/ud036_StarterCode/blob/master/fresh_tomatoes.py) to create your own copy in GitHub. 13 | Then `clone` your `ud036_StarterCode` repository to work on this project locally on your computer. 14 | The `fresh_tomatoes.py` module has a function called `open_movies_page` that takes in one argument, which is a list of movies, and creates an HTML file which will display all of your favorite movies. 15 | Ensure your website renders correctly when you attempt to load it in a browser. 16 | Notes 17 | 18 | The file `fresh_tomatoes.py` contains the `open_movies_page()` function that will take in your list of movies and generate an HTML file including this content, producing a website to showcase your favorite movies. 19 | 20 | Your task is to write a movie class in `media.py`. 21 | To do this, think about what the properties of a movie are that need to be encapsulated in a movie object such as movie titles, box art, poster images, and movie trailer URLs. 22 | Look at what `open_movies_page()` does with a list of movie objects for hints on how to design your movie class. 23 | 24 | You’ll want to write a constructor for the movie class so that you can create instances of movie. 25 | You can now create a list of these movie objects in `entertainment_center.py` by calling the constructor `media.Movie()` to instantiate movie objects. You’ve given movies their own custom data structure by defining the movie class and constructor, and now these objects can be stored in a list data structure. This list of movies is what the open_movies_page() function needs as input in order to build the HTML file, so you can display your website. 26 | Project Evaluation 27 | The project will be evaluated as either Meets Specifications or Does Not Meet Specifications scale. The rubric is broken into four major categories: 28 | 29 | Functionality 30 | Does your project work the way it's supposed to? Are movies and their poster images being displayed on the web page? Is there a trailer link? Does it open from the Python file error free? 31 | 32 | Code Quality 33 | Is your code organized and professional? If you need an idea of how to format and style your code to look organized and professional, check out the Google [Python Style Guide](https://google.github.io/styleguide/pyguide.html) and the [PEP-8 site](https://www.python.org/dev/peps/pep-0008/). 34 | 35 | Because Python is sensitive to white space and indents, make sure that you follow the formatting rules found here. 36 | 37 | Comments 38 | Do you use comments to describe what is going on in your code? Would other developers be able to take a look at your code and easily be able to understand what your code is trying to do? A good starting point to see how to comment code would be to take a look at the comments section of the Google Python Style Guide. 39 | 40 | Documentation 41 | When submitting your project, be sure to include a README file detailing how a user is to run your project (how to open the movie trailer website). 42 | 43 | Include information, such as, how do they get your code (download, etc.), are there any requirements? Are there any commands that need to be run in order to run your application? 44 | If you've never written a README before, Udacity has produced a [short course](https://cn.udacity.com/course/writing-readmes--ud777) on how to write one effectively. -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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You may not convey a covered 525 | work if you are a party to an arrangement with a third party that is 526 | in the business of distributing software, under which you make payment 527 | to the third party based on the extent of your activity of conveying 528 | the work, and under which the third party grants, to any of the 529 | parties who would receive the covered work from you, a discriminatory 530 | patent license (a) in connection with copies of the covered work 531 | conveyed by you (or copies made from those copies), or (b) primarily 532 | for and in connection with specific products or compilations that 533 | contain the covered work, unless you entered into that arrangement, 534 | or that patent license was granted, prior to 28 March 2007. 535 | 536 | Nothing in this License shall be construed as excluding or limiting 537 | any implied license or other defenses to infringement that may 538 | otherwise be available to you under applicable patent law. 539 | 540 | 12. No Surrender of Others' Freedom. 541 | 542 | If conditions are imposed on you (whether by court order, agreement or 543 | otherwise) that contradict the conditions of this License, they do not 544 | excuse you from the conditions of this License. If you cannot convey a 545 | covered work so as to satisfy simultaneously your obligations under this 546 | License and any other pertinent obligations, then as a consequence you may 547 | not convey it at all. For example, if you agree to terms that obligate you 548 | to collect a royalty for further conveying from those to whom you convey 549 | the Program, the only way you could satisfy both those terms and this 550 | License would be to refrain entirely from conveying the Program. 551 | 552 | 13. Use with the GNU Affero General Public License. 553 | 554 | Notwithstanding any other provision of this License, you have 555 | permission to link or combine any covered work with a work licensed 556 | under version 3 of the GNU Affero General Public License into a single 557 | combined work, and to convey the resulting work. The terms of this 558 | License will continue to apply to the part which is the covered work, 559 | but the special requirements of the GNU Affero General Public License, 560 | section 13, concerning interaction through a network will apply to the 561 | combination as such. 562 | 563 | 14. Revised Versions of this License. 564 | 565 | The Free Software Foundation may publish revised and/or new versions of 566 | the GNU General Public License from time to time. Such new versions will 567 | be similar in spirit to the present version, but may differ in detail to 568 | address new problems or concerns. 569 | 570 | Each version is given a distinguishing version number. If the 571 | Program specifies that a certain numbered version of the GNU General 572 | Public License "or any later version" applies to it, you have the 573 | option of following the terms and conditions either of that numbered 574 | version or of any later version published by the Free Software 575 | Foundation. If the Program does not specify a version number of the 576 | GNU General Public License, you may choose any version ever published 577 | by the Free Software Foundation. 578 | 579 | If the Program specifies that a proxy can decide which future 580 | versions of the GNU General Public License can be used, that proxy's 581 | public statement of acceptance of a version permanently authorizes you 582 | to choose that version for the Program. 583 | 584 | Later license versions may give you additional or different 585 | permissions. However, no additional obligations are imposed on any 586 | author or copyright holder as a result of your choosing to follow a 587 | later version. 588 | 589 | 15. Disclaimer of Warranty. 590 | 591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 599 | 600 | 16. Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | {one line to give the program's name and a brief idea of what it does.} 635 | Copyright (C) {year} {name of author} 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | {project} Copyright (C) {year} {fullname} 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. 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a=parseInt(n(f.SESSION_ID)),u=parseInt(n(f.LAST_EVENT_TIME)),c=parseInt(n(f.LAST_EVENT_ID)),p=parseInt(n(f.LAST_IDENTIFY_ID)),l=parseInt(n(f.LAST_SEQUENCE_NUMBER)),d=function(e){return"object"===A(t)&&t[e]};e.options.deviceId=d("deviceId")||o,e.options.userId=d("userId")||i,e._sessionId=d("sessionId")||a||e._sessionId,e._lastEventTime=d("lastEventTime")||u||e._lastEventTime,e._eventId=d("eventId")||c||e._eventId,e._identifyId=d("identifyId")||p||e._identifyId,e._sequenceNumber=d("sequenceNumber")||l||e._sequenceNumber,e.options.optOut=s||!1,t&&void 0!==t.optOut&&null!==t.optOut&&(e.options.optOut="true"===String(t.optOut)),Kt(e)}},Gt=function(e){var t=e.cookieStorage.get(e.options.cookieName+e._storageSuffix);if("object"===A(t))Bt(e,t);else{var n=e.cookieStorage.get(e.options.cookieName+e._legacyStorageSuffix);"object"===A(n)&&(e.cookieStorage.remove(e.options.cookieName+e._legacyStorageSuffix),Bt(e,n))}},Bt=function(e,t){t.deviceId&&(e.options.deviceId=t.deviceId),t.userId&&(e.options.userId=t.userId),null!==t.optOut&&void 0!==t.optOut&&(e.options.optOut=t.optOut),t.sessionId&&(e._sessionId=parseInt(t.sessionId)),t.lastEventTime&&(e._lastEventTime=parseInt(t.lastEventTime)),t.eventId&&(e._eventId=parseInt(t.eventId)),t.identifyId&&(e._identifyId=parseInt(t.identifyId)),t.sequenceNumber&&(e._sequenceNumber=parseInt(t.sequenceNumber))},Kt=function(e){e.cookieStorage.set(e.options.cookieName+e._storageSuffix,{deviceId:e.options.deviceId,userId:e.options.userId,optOut:e.options.optOut,sessionId:e._sessionId,lastEventTime:e._lastEventTime,eventId:e._eventId,identifyId:e._identifyId,sequenceNumber:e._sequenceNumber})};Mt.prototype._initUtmData=function(e,t){e=e||this._getUrlParams();var n=function(e,t){var n=e?"?"+e.split(".").slice(-1)[0].replace(/\|/g,"&"):"",r=function(e,t,n,r){return L.getQueryParam(e,t)||L.getQueryParam(n,r)},o=r("utm_source",t,"utmcsr",n),i=r("utm_medium",t,"utmcmd",n),s=r("utm_campaign",t,"utmccn",n),a=r("utm_term",t,"utmctr",n),u=r("utm_content",t,"utmcct",n),c={},p=function(e,t){L.isEmptyString(t)||(c[e]=t)};return p("utm_source",o),p("utm_medium",i),p("utm_campaign",s),p("utm_term",a),p("utm_content",u),c}(t=t||this.cookieStorage.get("__utmz"),e);zt(this,n)};var zt=function(e,t){if("object"===A(t)&&0!==Object.keys(t).length){var n=new Q;for(var r in t)t.hasOwnProperty(r)&&(n.setOnce("initial_"+r,t[r]),n.set(r,t[r]));e.identify(n)}};Mt.prototype._getReferrer=function(){return document.referrer},Mt.prototype._getUrlParams=function(){return location.search},Mt.prototype._saveGclid=function(e){var t=L.getQueryParam("gclid",e);if(!L.isEmptyString(t)){zt(this,{gclid:t})}},Mt.prototype._getDeviceIdFromUrlParam=function(e){return L.getQueryParam(f.AMP_DEVICE_ID_PARAM,e)},Mt.prototype._getReferringDomain=function(e){if(L.isEmptyString(e))return null;var t=e.split("/");return t.length>=3?t[2]:null},Mt.prototype._saveReferrer=function(e){if(!L.isEmptyString(e)){var t={referrer:e,referring_domain:this._getReferringDomain(e)};zt(this,t)}},Mt.prototype.saveEvents=function(){try{this._setInStorage(W,this.options.unsentKey,JSON.stringify(this._unsentEvents))}catch(e){}try{this._setInStorage(W,this.options.unsentIdentifyKey,JSON.stringify(this._unsentIdentifys))}catch(e){}},Mt.prototype.setDomain=function(e){if(L.validateInput(e,"domain","string"))try{this.cookieStorage.options({domain:e}),this.options.domain=this.cookieStorage.options().domain,Gt(this),Kt(this)}catch(e){L.log.error(e)}},Mt.prototype.setUserId=function(e){try{this.options.userId=void 0!==e&&null!==e&&""+e||null,Kt(this)}catch(e){L.log.error(e)}},Mt.prototype.setGroup=function(e,t){if(this._apiKeySet("setGroup()")&&L.validateInput(e,"groupType","string")&&!L.isEmptyString(e)){var n={};n[e]=t;var r=(new Q).set(e,t);this._logEvent(f.IDENTIFY_EVENT,null,null,r.userPropertiesOperations,n,null,null)}},Mt.prototype.setOptOut=function(e){if(L.validateInput(e,"enable","boolean"))try{this.options.optOut=e,Kt(this)}catch(e){L.log.error(e)}},Mt.prototype.setSessionId=function(e){if(L.validateInput(e,"sessionId","number"))try{this._sessionId=e,Kt(this)}catch(e){L.log.error(e)}},Mt.prototype.regenerateDeviceId=function(){this.setDeviceId(Dt()+"R")},Mt.prototype.setDeviceId=function(e){if(L.validateInput(e,"deviceId","string"))try{L.isEmptyString(e)||(this.options.deviceId=""+e,Kt(this))}catch(e){L.log.error(e)}},Mt.prototype.setUserProperties=function(e){if(this._apiKeySet("setUserProperties()")&&L.validateInput(e,"userProperties","object")){var t=L.truncate(L.validateProperties(e));if(0!==Object.keys(t).length){var n=new Q;for(var r in t)t.hasOwnProperty(r)&&n.set(r,t[r]);this.identify(n)}}},Mt.prototype.clearUserProperties=function(){if(this._apiKeySet("clearUserProperties()")){var e=new Q;e.clearAll(),this.identify(e)}};var Jt=function(e,t){for(var n=0;n0)return this._logEvent(f.IDENTIFY_EVENT,null,null,e.userPropertiesOperations,null,null,t)}else L.log.error("Invalid identify input type. Expected Identify object but saw "+A(e));"function"===A(t)&&t(0,"No request sent")}else"function"===A(t)&&t(0,"No request sent")},Mt.prototype.setVersionName=function(e){L.validateInput(e,"versionName","string")&&(this.options.versionName=e)},Mt.prototype._logEvent=function(e,t,n,r,o,i,s){if(Gt(this),e&&!this.options.optOut)try{var a;a=e===f.IDENTIFY_EVENT?this.nextIdentifyId():this.nextEventId();var u=this.nextSequenceNumber(),c="number"===A(i)?i:(new Date).getTime();(!this._sessionId||!this._lastEventTime||c-this._lastEventTime>this.options.sessionTimeout)&&(this._sessionId=c),this._lastEventTime=c,Kt(this),r=r||{},n=n||{},t=t||{},o=o||{};var p={device_id:this.options.deviceId,user_id:this.options.userId,timestamp:c,event_id:a,session_id:this._sessionId||-1,event_type:e,version_name:this.options.versionName||null,platform:this.options.platform,os_name:this._ua.browser.name||null,os_version:this._ua.browser.major||null,device_model:this._ua.os.name||null,language:this.options.language,api_properties:n,event_properties:L.truncate(L.validateProperties(t)),user_properties:L.truncate(L.validateProperties(r)),uuid:Dt(),library:{name:"imgLos-js",version:"1.0.0"},sequence_number:u,groups:L.truncate(L.validateGroups(o)),user_agent:this._userAgent};return e===f.IDENTIFY_EVENT?(this._unsentIdentifys.push(p),this._limitEventsQueued(this._unsentIdentifys)):(this._unsentEvents.push(p),this._limitEventsQueued(this._unsentEvents)),this.options.saveEvents&&this.saveEvents(),this._sendEventsIfReady(s)||"function"!==A(s)||s(0,"No request sent"),a}catch(e){L.log.error(e)}else"function"===A(s)&&s(0,"No request sent")},Mt.prototype._limitEventsQueued=function(e){e.length>this.options.savedMaxCount&&e.splice(0,e.length-this.options.savedMaxCount)},Mt.prototype.logEvent=function(e,t,n){return this.logEventWithTimestamp(e,t,null,n)},Mt.prototype.logEventWithTimestamp=function(e,t,n,r){return this._apiKeySet("logEvent()")&&L.validateInput(e,"eventType","string")&&!L.isEmptyString(e)?this._logEvent(e,t,null,null,null,n,r):("function"===A(r)&&r(0,"No request sent"),-1)},Mt.prototype.logEventWithGroups=function(e,t,n,r){return this._apiKeySet("logEventWithGroup()")&&L.validateInput(e,"eventType","string")?this._logEvent(e,t,null,null,n,null,r):("function"===A(r)&&r(0,"No request sent"),-1)};var $t=function(e){return!isNaN(parseFloat(e))&&isFinite(e)};Mt.prototype.logRevenueV2=function(e){if(this._apiKeySet("logRevenueV2()"))if("object"===A(e)&&e.hasOwnProperty("_q")&&(e=Jt(new Ft,e)),e instanceof Ft){if(e&&e._isValidRevenue())return this.logEvent(f.REVENUE_EVENT,e._toJSONObject())}else L.log.error("Invalid revenue input type. Expected Revenue object but saw "+A(e))},Mt.prototype.logRevenue=function(e,t,n){return this._apiKeySet("logRevenue()")&&$t(e)&&(void 0===t||$t(t))?this._logEvent(f.REVENUE_EVENT,{},{productId:n,special:"revenue_amount",quantity:t||1,price:e},null,null,null,null):-1},Mt.prototype.removeEvents=function(e,t){Wt(this,"_unsentEvents",e),Wt(this,"_unsentIdentifys",t)};var Wt=function(e,t,n){if(!(n<0)){for(var r=[],o=0;on&&r.push(e[t][o]);e[t]=r}};Mt.prototype.sendEvents=function(e){if(!this._apiKeySet("sendEvents()")||this._sending||this.options.optOut||0===this._unsentCount())"function"===A(e)&&e(0,"No request sent");else{this._sending=!0;var t=(this.options.forceHttps?"https":"https:"===window.location.protocol?"https":"http")+"://"+this.options.apiEndpoint+"/",n=Math.min(this._unsentCount(),this.options.uploadBatchSize),r=this._mergeEventsAndIdentifys(n),o=r.maxEventId,i=r.maxIdentifyId,s=JSON.stringify(r.eventsToSend),a=(new Date).getTime(),u={client:this.options.apiKey,e:s,v:f.API_VERSION,upload_time:a,checksum:X(f.API_VERSION+this.options.apiKey+s+a)},c=this;new Pt(t,u).send(function(t,r){c._sending=!1;try{200===t&&"success"===r?(c.removeEvents(o,i),c.options.saveEvents&&c.saveEvents(),c._sendEventsIfReady(e)||"function"!==A(e)||e(t,r)):413===t?(1===c.options.uploadBatchSize&&c.removeEvents(o,i),c.options.uploadBatchSize=Math.ceil(n/2),c.sendEvents(e)):"function"===A(e)&&e(t,r)}catch(e){}})}},Mt.prototype._mergeEventsAndIdentifys=function(e){for(var t=[],n=0,r=-1,o=0,i=-1;t.length=this._unsentIdentifys.length,u=n>=this._unsentEvents.length;if(u&&a){L.log.error("Merging Events and Identifys, less events and identifys than expected");break}a?r=(s=this._unsentEvents[n++]).event_id:u?i=(s=this._unsentIdentifys[o++]).event_id:!("sequence_number"in this._unsentEvents[n])||this._unsentEvents[n].sequence_number