Changes: Online judge

Revision as of 06:15, 19 June 2021

An online judge is an online system to test programs in programming contests. They are also used to practice for such contests.

The system can compile and execute your code, and test your code with pre-constructed data. Submitted code may be run with restrictions, including time limit, memory limit, security restriction and so on. The output of the code will be captured by the system, and compared with the standard output. The system will then return the result.

When mistakes were found in a standard output, the submission will be unsuccessful. You must correct any errors in the code, and resubmit for re-judgement.

Some examples of online judges are:

Valladolid Problem Archive with Online Judge, about 2000 problems, supports C, C++, Pascal and Java programming languages
Ural State University Problem Archive with Online Judge, over 500 problems
Saratov State University Problem Archive with Online Judge, over 200 problems
URI Online Judge, more than 1800 problems formulated in English and Portuguese; supports C, C++, C#, Java, Python, Ruby, Scala, JavaScript, Kotlin, and Go; also supports SQL; problems divided into 9 major categories
Panda Online Judge, over 4000 problems including more than 200 original problems, have useful features for users.
Peking University Online Judge, over 2300 problems including more than 200 original problems
Moscow Problem Archive with Online Judge, not many, but high quality problems
Sphere Online Judge, about 3000 problems formulated in English, Polish, Vietnamese, Portuguese; supports over 30 different Programming languages.
Lviv National University Online Judge, over 100 hard ACM-type problems. Only ukrainian language.
Tianjin University Online Judge, over 2000 problems, virtual contests supported.
Zhejiang University Online Judge, 1875 problems but only supports C, C++, and Pascal
Harbin Institute of Technology Online Judge
Fuzhou University Online Judge

Examples of modern judge platforms

@@ Line 3: / Line 3: @@
 The system can compile and execute your code, and test your code with pre-constructed data. Submitted code may be run with restrictions, including time limit, memory limit, security restriction and so on. The output of the code will be captured by the system, and compared with the standard output. The system will then return the result.
-When mistakes were found in a standard output, the submission will be unsuccessful.  You must correct any errors in the code, and resubmit for re-judgement.
+When mistakes were found in a standard output, the submission will be unsuccessful. You must correct any errors in the code, and resubmit for re-judgement.
 Some examples of online judges are:
@@ Line 9: / Line 9: @@
 *[http://acm.timus.ru Ural State University Problem Archive with Online Judge], over 500 problems
 *[http://acm.sgu.ru Saratov State University Problem Archive with Online Judge], over 200 problems
+*[http://www.urionlinejudge.com.br URI Online Judge], more than 1800 problems formulated in English and Portuguese; supports C, C++, C#, Java, Python, Ruby, Scala, JavaScript, Kotlin, and Go; also supports SQL; problems divided into 9 major categories
+*[https://pandaoj.com Panda Online Judge], over 4000 problems including more than 200 original problems, have useful features for users.
 *[http://acm.pku.edu.cn/JudgeOnline/ Peking University Online Judge], over 2300 problems including more than 200 original problems
 *[http://acm.mipt.ru/judge/login.pl?lang=en Moscow Problem Archive with Online Judge], not many, but high quality problems
 *[http://www.spoj.pl/ Sphere Online Judge], about 3000 problems formulated in English, Polish, Vietnamese, Portuguese; supports over 30 different Programming languages.
 *[http://acm.lviv.ua Lviv National University Online Judge], over 100 hard ACM-type problems. Only ukrainian language.
 *[http://acm.tju.edu.cn Tianjin University Online Judge], over 2000 problems, virtual contests supported.
 *[http://acm.zju.edu.cn/ Zhejiang University Online Judge], 1875 problems but only supports C, C++, and Pascal
 *[http://acm.hit.edu.cn/ Harbin Institute of Technology Online Judge]
 *[http://acm.fzu.edu.cn/ Fuzhou University Online Judge]
+Examples of modern judge platforms
+*[http://open.kattis.com Kattis]
+*[http://www.codewars.com CodeWars]
+*[http://codefights.com CodeFight]
+*[http://codingame.com CodinGame]
+*[http://hackerrank.com Hackerrank]
+*[http://leetcode.com LeetCode]
+*[https://www.interviewbit.com InterviewBit]
+*[https://backtobackswe.com/ Backtobackswe]
+*[https://workat.tech/problem-solving/practice WorkAtTech]
 ==See also==