By switching to these legal platforms, you not only protect yourself from malware and legal trouble but also support the artists, filmmakers, and technicians whose hard work makes the entertainment you love possible.

Many users believe that only the people who upload content get in trouble. This is no longer the case. The legal environment is shifting to target consumers as well.

: These sites often contain malware, aggressive pop-up ads, and phishing links .

Let’s compare what you get from the "latest update" of a pirate site versus legitimate platforms.

: Operators frequently shift the "dev" or primary domain to avoid ISP blocking. Legal Status

Automated 301 server redirects to active backend mirror domains

Many proxy links require users to pass through multiple shortener URLs or "human verification" tests. These tests frequently route users to phishing pages that trick individuals into inputting sensitive personal data, financial details, or downloading fraudulent security software. Legitimate and Safe Alternatives for Digital Entertainment

: Excellent platforms dedicated to localized network TV shows, reality programming, and original web series.

Summary

Technical analysis opportunities (how investigators or defenders can study the update)

: Searching for updated installation files (APKs) for mobile emulators or media players designed to stream content from the platform directly. How Shifting Domains and Proxies Work

Every time you visit to watch a new release, you are directly harming the film industry. The "UPD" does not stand for "upgraded features" for your benefit; it stands for the pirates updating their stolen catalog.

About Team Terms of use Privacy Policy

9xmovies Dev | Upd

By switching to these legal platforms, you not only protect yourself from malware and legal trouble but also support the artists, filmmakers, and technicians whose hard work makes the entertainment you love possible.

Many users believe that only the people who upload content get in trouble. This is no longer the case. The legal environment is shifting to target consumers as well.

: These sites often contain malware, aggressive pop-up ads, and phishing links .

Let’s compare what you get from the "latest update" of a pirate site versus legitimate platforms.

: Operators frequently shift the "dev" or primary domain to avoid ISP blocking. Legal Status

Automated 301 server redirects to active backend mirror domains

Many proxy links require users to pass through multiple shortener URLs or "human verification" tests. These tests frequently route users to phishing pages that trick individuals into inputting sensitive personal data, financial details, or downloading fraudulent security software. Legitimate and Safe Alternatives for Digital Entertainment

: Excellent platforms dedicated to localized network TV shows, reality programming, and original web series.

Summary

Technical analysis opportunities (how investigators or defenders can study the update)

: Searching for updated installation files (APKs) for mobile emulators or media players designed to stream content from the platform directly. How Shifting Domains and Proxies Work

Every time you visit to watch a new release, you are directly harming the film industry. The "UPD" does not stand for "upgraded features" for your benefit; it stands for the pirates updating their stolen catalog.

Team

✕

Project Leader & Advisor (Jul 2011-present)
Associate Professor Steven Halim, School of Computing (SoC), National University of Singapore (NUS)
Dr Felix Halim, Senior Software Engineer, Google (Mountain View)

Undergraduate Student Researchers 1
CDTL TEG 1: Jul 2011-Apr 2012: Koh Zi Chun, Victor Loh Bo Huai

Final Year Project/UROP students 1
Jul 2012-Dec 2013: Phan Thi Quynh Trang, Peter Phandi, Albert Millardo Tjindradinata, Nguyen Hoang Duy
Jun 2013-Apr 2014 Rose Marie Tan Zhao Yun, Ivan Reinaldo

Undergraduate Student Researchers 2
CDTL TEG 2: May 2014-Jul 2014: Jonathan Irvin Gunawan, Nathan Azaria, Ian Leow Tze Wei, Nguyen Viet Dung, Nguyen Khac Tung, Steven Kester Yuwono, Cao Shengze, Mohan Jishnu

Final Year Project/UROP students 2
Jun 2014-Apr 2015: Erin Teo Yi Ling, Wang Zi
Jun 2016-Dec 2017: Truong Ngoc Khanh, John Kevin Tjahjadi, Gabriella Michelle, Muhammad Rais Fathin Mudzakir
Aug 2021-Apr 2023: Liu Guangyuan, Manas Vegi, Sha Long, Vuong Hoang Long, Ting Xiao, Lim Dewen Aloysius

Undergraduate Student Researchers 3
Optiver: Aug 2023-Oct 2023: Bui Hong Duc, Tay Ngan Lin

Final Year Project/UROP students 3
Aug 2023-Apr 2024: Xiong Jingya, Radian Krisno, Ng Wee Han, Tan Chee Heng
Aug 2024-Apr 2025: Edbert Geraldy Cangdinata, Huang Xing Chen, Nicholas Patrick

List of translators who have contributed ≥ 100 translations can be found at statistics page.

Acknowledgements
NUS CDTL gave Teaching Enhancement Grant to kickstart this project.

For Academic Year 2023/24 - present (currently AY 2025/26) - generous donations from Optiver will be used to further develop VisuAlgo.

Terms of use

✕

VisuAlgo is generously offered at no cost to the global Computer Science community. If you appreciate VisuAlgo, we kindly request that you spread the word about its existence to fellow Computer Science students and instructors. You can share VisuAlgo through social media platforms (e.g., Facebook, YouTube, Instagram, TikTok, Twitter, etc), course webpages, blog reviews, emails, and more.

Data Structures and Algorithms (DSA) students and instructors are welcome to use this website directly for their classes. If you capture screenshots or videos from this site, feel free to use them elsewhere, provided that you cite the URL of this website (https://visualgo.net) and/or the list of publications below as references. However, please refrain from downloading VisuAlgo's client-side files and hosting them on your website, as this constitutes plagiarism. At this time, we do not permit others to fork this project or create VisuAlgo variants. Personal use of an offline copy of the client-side VisuAlgo is acceptable. 9xmovies dev UPD

Please note that VisuAlgo's online quiz component has a substantial server-side element, and it is not easy to save server-side scripts and databases locally. Currently, the general public can access the online quiz system only through the 'training mode.' The 'test mode' offers a more controlled environment for using randomly generated questions and automatic verification in real examinations at NUS. By switching to these legal platforms, you not

List of Publications

This work has been presented at the CLI Workshop at the ICPC World Finals 2012 (Poland, Warsaw) and at the IOI Conference at IOI 2012 (Sirmione-Montichiari, Italy). You can click this link to read our 2012 paper about this system (it was not yet called VisuAlgo back in 2012) and this link for the short update in 2015 (to link VisuAlgo name with the previous project). The legal environment is shifting to target consumers

Bug Reports or Request for New Features

VisuAlgo is not a finished project. Associate Professor Steven Halim is still actively improving VisuAlgo. If you are using VisuAlgo and spot a bug in any of our visualization page/online quiz tool or if you want to request for new features, please contact Associate Professor Steven Halim. His contact is the concatenation of his name and add gmail dot com.

Privacy Policy

✕

Version 1.2 (Updated Fri, 18 Aug 2023).

Since Fri, 18 Aug 2023, we no longer use Google Analytics. Thus, all cookies that we use now are solely for the operations of this website. The annoying cookie-consent popup is now turned off even for first-time visitors.

Since Fri, 07 Jun 2023, thanks to a generous donation by Optiver, anyone in the world can self-create a VisuAlgo account to store a few customization settings (e.g., layout mode, default language, playback speed, etc).

Additionally, for NUS students, by using a VisuAlgo account (a tuple of NUS official email address, student name as in the class roster, and a password that is encrypted on the server side — no other personal data is stored), you are giving a consent for your course lecturer to keep track of your e-lecture slides reading and online quiz training progresses that is needed to run the course smoothly. Your VisuAlgo account will also be needed for taking NUS official VisuAlgo Online Quizzes and thus passing your account credentials to another person to do the Online Quiz on your behalf constitutes an academic offense. Your user account will be purged after the conclusion of the course unless you choose to keep your account (OPT-IN). Access to the full VisuAlgo database (with encrypted passwords) is limited to Prof Halim himself.

For other CS lecturers worldwide who have written to Steven, a VisuAlgo account (your (non-NUS) email address, you can use any display name, and encrypted password) is needed to distinguish your online credential versus the rest of the world. Your account will have CS lecturer specific features, namely the ability to see the hidden slides that contain (interesting) answers to the questions presented in the preceding slides before the hidden slides. You can also access Hard setting of the VisuAlgo Online Quizzes. You can freely use the material to enhance your data structures and algorithm classes. Note that there can be other CS lecturer specific features in the future.

For anyone with VisuAlgo account, you can remove your own account by yourself should you wish to no longer be associated with VisuAlgo tool.