visualising information buildings and algorithms by means of animation
visualising information buildings and algorithms by means of animation
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VisuAlgo is a trilingual web site. Strive visiting the opposite variations of VisuAlgo apart from the default English version, e.g., Chinese or Indonesian. Customers can see the translation statistics for these three pages. We goal to make all three has close to 100% translation charge. Sadly the interpretation progress with different languages are too far behind and they’re thus redirected to English.
In VisuAlgo, you need to use your personal enter for any algorithm as a substitute of utilizing solely the offered pattern inputs. This is without doubt one of the key characteristic of VisuAlgo. Strive the graph drawing characteristic in these 9 graph-related visualizations: Graph DS, DFS/BFS, MST, SSSP, Max Flow, Matching, MVC, Steiner Tree, and TSP. You can even click on tag ‘graph’ in any of those 9 graph-related visualization bins or kind in ‘graph’ within the search field.
Listed below are a number of the newer visualization options: potential to point out two visualization scales (1.0x and 0.5x), the zoom-out scale is used to point out operations of a barely larger take a look at instances, /list (the linked listing are not routinely re-layout for many instances to strengthen the O(1) impression of virtually all Linked Checklist operations).
Breaking information [Fri, 09 Jun 23]: VisuAlgo venture is funded by Optiver beginning right this moment. We now open VisuAlgo account registration to each Pc Science college students/academics worldwide. Go to the login page and observe the on-screen directions to create a brand new VisuAlgo account (not restricted to ‘nus.edu’-related emails).
To match 2 associated algorithms, e.g., Kruskal’s vs Prim’s on the identical graph, or 2 associated operations of the identical information construction, e.g., visualizing Binary (Max) Heap as a Binary Tree or as a Compact Array, open 2 VisuAlgo pages in 2 home windows and juxtapose them. Click on here to see the screenshot. This juxtaposition method can be utilized anytime you need to examine two comparable information buildings or algorithms.
You’ll be able to visualize the recursion tree (or DAG, if there are overlapping subproblems and Dynamic Programming (DP) is relevant) of ANY legitimate recursive function that may be written in JavaScript. Click on here to see the screenshot. Clearly don’t attempt visualizing recursion with a huge recursion tree as doing so will crash your personal internet browser/laptop.
VisuAlgo hundreds quick for first time guests (we use Cloudflare international CDN), however it hundreds ‘nearly immediately’ for returning guests as we additionally cache a lot of static content material of VisuAlgo :). So, don’t use incognito or non-public shopping mode to maintain the cache. Furthermore, for NUS college students with VisuAlgo accounts, we’ll load VisuAlgo in line with your preferences/class setup after you login.
Every visualization web page has an ‘e-Lecture Mode’ that’s accessible from that web page’s prime proper nook. This mode is routinely proven to first time (or non logged-in) guests to showcase the info construction or algorithm being visualized. The standard of e-Lecture mode for a lot of visualization pages have reached the lecture normal of algorithm courses in Nationwide College of Singapore :).
Please examine the most recent options of VisuAlgo: 1). Consumer accounts system for NUS college students and verified CS lecturers worldwide (and in addition learn the newest Privateness Coverage popup on the backside proper nook), 2). Extra mobile-friendly setup, 3). Extra polished e-Lecture notes to succeed in “NUS normal”, and 4). Trilingual functionality (/en, /zh, or /id).
VisuAlgo has two major parts: The 24 visualization pages and their related On-line Quiz element (extra questions are presently being added into the query financial institution). We don’t script any of the questions in On-line Quiz :O and all solutions will likely be graded nearly immediately :). You’ll be able to this on-line quiz system by clicking the ‘Coaching’ button on the visualization module.
About
Initially conceived in 2011 by Affiliate Professor Steven Halim, VisuAlgo aimed to facilitate a deeper understanding of information buildings and algorithms for his college students by offering a self-paced, interactive studying platform.
That includes quite a few superior algorithms mentioned in Dr. Steven Halim’s e-book, ‘Aggressive Programming’ — co-authored with Dr. Felix Halim and Dr. Suhendry Effendy — VisuAlgo stays the unique platform for visualizing and animating a number of of those advanced algorithms even after a decade.
Whereas primarily designed for Nationwide College of Singapore (NUS) college students enrolled in varied information construction and algorithm programs (e.g., CS1010/equal, CS2040/equal (together with IT5003), CS3230, CS3233, and CS4234), VisuAlgo additionally serves as a worthwhile useful resource for inquisitive minds worldwide, selling on-line studying.
Initially, VisuAlgo was not designed for small contact screens like smartphones, as intricate algorithm visualizations required substantial pixel area and click-and-drag interactions. For an optimum person expertise, a minimal display decision of 1366×768 is advisable. Nevertheless, since April 2022, a cell (lite) model of VisuAlgo has been made out there, making it doable to make use of a subset of VisuAlgo options on smartphone screens.
VisuAlgo stays a piece in progress, with the continued growth of extra advanced visualizations. At current, the platform options 24 visualization modules.
Geared up with a built-in query generator and reply verifier, VisuAlgo’s “on-line quiz system” allows college students to check their information of fundamental information buildings and algorithms. Questions are randomly generated based mostly on particular guidelines, and college students’ solutions are routinely graded upon submission to our grading server. As extra CS instructors undertake this on-line quiz system worldwide, it might successfully get rid of handbook fundamental information construction and algorithm questions from normal Pc Science exams in lots of universities. By assigning a small (however non-zero) weight to passing the web quiz, CS instructors can considerably improve their college students’ mastery of those fundamental ideas, as they’ve entry to an nearly limitless variety of follow questions that may be immediately verified earlier than taking the web quiz. Every VisuAlgo visualization module now consists of its personal on-line quiz element.
VisuAlgo has been translated into three major languages: English, Chinese language, and Indonesian. Moreover, we’ve authored public notes about VisuAlgo in varied languages, together with Indonesian, Korean, Vietnamese, and Thai:
Crew
Venture Chief & Advisor (Jul 2011-present)
Associate Professor Steven Halim, College of Computing (SoC), Nationwide College of Singapore (NUS)
Dr Felix Halim, Senior Software program Engineer, Google (Mountain View)
Undergraduate Pupil Researchers 1
CDTL TEG 1: Jul 2011-Apr 2012: Koh Zi Chun, Victor Loh Bo Huai
Ultimate Yr Venture/UROP college 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 Pupil Researchers 2
CDTL TEG 2: Could 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
Ultimate Yr Venture/UROP college 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 Lengthy, Vuong Hoang Lengthy, Ting Xiao, Lim Dewen Aloysius
Undergraduate Pupil Researchers 3
Optiver: Aug 2023-Oct 2023: Bui Hong Duc, Oleh Naver, Tay Ngan Lin
Ultimate Yr Venture/UROP college students 3
Aug 2023-Apr 2024: Xiong Jingya, Radian Krisno, Ng Wee Han
Checklist of translators who’ve contributed ≥ 100 translations may be discovered at statistics web page.
Acknowledgements
NUS CDTL gave Instructing Enhancement Grant to kickstart this venture.
For Educational Yr 2023/24, a beneficiant donation from Optiver will likely be used to additional develop VisuAlgo.
Phrases of use
VisuAlgo is generously supplied for gratis to the worldwide Pc Science group. When you recognize VisuAlgo, we kindly request that you simply unfold the phrase about its existence to fellow Pc Science college students and instructors. You’ll be able to share VisuAlgo by means of social media platforms (e.g., Fb, YouTube, Instagram, TikTok, Twitter, and so on), course webpages, weblog critiques, emails, and extra.
Information Constructions and Algorithms (DSA) college students and instructors are welcome to make use of this web site instantly for his or her courses. When you seize screenshots or movies from this web site, be happy to make use of them elsewhere, offered that you simply cite the URL of this web site (https://visualgo.net) and/or the listing of publications beneath as references. Nevertheless, please chorus from downloading VisuAlgo’s client-side recordsdata and internet hosting them in your web site, as this constitutes plagiarism. Right now, we don’t allow others to fork this venture or create VisuAlgo variants. Private use of an offline copy of the client-side VisuAlgo is suitable.
Please notice that VisuAlgo’s on-line quiz element has a considerable server-side aspect, and it isn’t straightforward to save lots of server-side scripts and databases regionally. At the moment, most of the people can entry the web quiz system solely by means of the ‘coaching mode.’ The ‘take a look at mode’ presents a extra managed atmosphere for utilizing randomly generated questions and computerized verification in actual examinations at NUS.
Checklist of Publications
This work has been introduced on the CLI Workshop on the ICPC World Finals 2012 (Poland, Warsaw) and on the IOI Convention at IOI 2012 (Sirmione-Montichiari, Italy). You’ll be able to click on this link to learn our 2012 paper about this technique (it was not but referred to as VisuAlgo again in 2012) and this link for the quick replace in 2015 (to hyperlink VisuAlgo identify with the earlier venture).
Bug Stories or Request for New Options
VisuAlgo will not be a completed venture. Affiliate Professor Steven Halim remains to be actively enhancing VisuAlgo. In case you are utilizing VisuAlgo and spot a bug in any of our visualization web page/on-line quiz device or if you wish to request for brand new options, please contact Affiliate Professor Steven Halim. His contact is the concatenation of his identify and add gmail dot com.
Privateness Coverage
Model 1.2 (Up to date Fri, 18 Aug 2023).
Since Fri, 18 Aug 2023, we not use Google Analytics. Thus, all cookies that we use now are solely for the operations of this web site. The annoying cookie-consent popup is now turned off even for first-time guests.
Since Fri, 07 Jun 2023, because of a beneficiant donation by Optiver, anybody on the earth can self-create a VisuAlgo account to retailer a number of customization settings (e.g., format mode, default language, playback pace, and so on).
Moreover, for NUS college students, through the use of a VisuAlgo account (a tuple of NUS official e-mail deal with, scholar identify as within the class roster, and a password that’s encrypted on the server aspect — no different private information is saved), you’re giving a consent to your course lecturer to maintain observe of your e-lecture slides studying and on-line quiz coaching progresses that’s wanted to run the course easily. Your VisuAlgo account can even be wanted for taking NUS official VisuAlgo On-line Quizzes and thus passing your account credentials to a different individual to do the On-line Quiz in your behalf constitutes a tutorial offense. Your person account will likely be purged after the conclusion of the course until you select to maintain your account (OPT-IN). Entry to the total VisuAlgo database (with encrypted passwords) is restricted to Prof Halim himself.
For different CS lecturers worldwide who’ve written to Steven, a VisuAlgo account (your (non-NUS) e-mail deal with, you need to use any show identify, and encrypted password) is required to differentiate your on-line credential versus the remainder of the world. Your account could have CS lecturer particular options, particularly the power to see the hidden slides that include (fascinating) solutions to the questions introduced within the previous slides earlier than the hidden slides. You can even entry Laborious setting of the VisuAlgo On-line Quizzes. You’ll be able to freely use the fabric to boost your information buildings and algorithm courses. Observe that there may be different CS lecturer particular options sooner or later.
For anybody with VisuAlgo account, you may take away your personal account by your self do you have to want to not be related to VisuAlgo device.