Competitive programming | Must Know Resources for Programmers by Giessen Dev

Best resources to learn Competitive programming

Here are the most popular resources for Competitive programming

A2OJ Ladders

Practice codeforces problems based on your proficiency and difficulty

Advent of Code

An Advent calendar of small programming puzzles

Archived Problems - Project Euler

Archived Problems - Project Euler

Problems Archives

Art of Problem Solving

Art of Problem Solving

Is math class too easy for you? You've come to the right place!

AtCoder

One of the best places to build competitive programming skills for beginners to experts.

CodeChef

The only programming contests Web 2.0 platform

CodeEval

Notepad for notes and code snippets, stored locally in the browser

Codeforces

Programming Competition,Programming Contest,Online Computer Programming

CodeSignal

Test your coding skills

Codewars

Rank up by completing code kata

Codility

Verify and improve coding skills

Codingame

Learn coding through games and challenges!

Facebook Hacker Cup

Facebook Hacker Cup

Facebook's Programming Contest, past problems solutions and FAQ

Google Coding Competitions Archive

Google Coding Competitions Archive

past contest problems for practice

HackerEarth - Programming challenges and Developer jobs

HackerEarth - Programming challenges and Developer jobs

HackerRank

Practice coding. Compete. Find jobs.

LightOJ

Practicing at lightoj is so good for beginners as it is categorized and have also chat room and forum which helps to communicate with others about any problem.

PKU ACM ICPC Practice problems

PKU ACM ICPC Practice problems

Judge online for ACMACPC

PrepBytes

Topic and level wise proper arrange problems

Sphere Online Judge (SPOJ)

Sphere Online Judge (SPOJ)

Become a true programming master Learn how to code and build efficient algorithms

Topcoder

Deliver Faster through Crowdsourcing

Topic Wise Problem For Competitive Programmer

Topic Wise Problem For Competitive Programmer

Topic wise Practise Problem

URI Online Judge

URI Online Judge

Practice coding, Compete and be a better coder.

UVa Online Judge

UVa Online Judge

hundreds of problems supporting multiple languages.

WakaTime

leaderboards of coding metrics collected via editor plugins

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Bash and Shell scripting

Blogs of Developers

Building a Simple Compiler/Interpreter

Coding practice for beginners

Competitive programming

Everything in one place

️ For improving your English

For those who want to start a small project but can't find the ideas

General Coding advice

️ General Tools

️ Good Articles

Interview Preparation

MOOCs for learning something new

Online Compiler and Sharing Code snippets

Open Source Websites

Seminar, research writing, talks, etc

Sites related to your preferred programming language (For me C++)

Video Tutorials

Watch others code

What should a programmer know

️ When you get bored from CS related stuff

When you get stuck

YouTube Channels