System Design of Online Coding Judge (Competitive Programming Platform)

If you are a competitive programmer you don't need an introduction to coding judge.Most of us use coding platforms like Hackerank,Hackerearth,leetCode,CodeChef for practicing coding or to take part in various contests.Ever wondered how it works?Food for mind, think how your code get's executed and judged accordingly after plagiarism check.

What is an online coding judge?
Online coding judge evaluates the algorithmic source code submitted by the platform users and tests it against various test ca...