Red

153 students

153
students have developed their Red skills on Exercism.

Students

153

Submissions

3,331

Mentoring Discussions

4

The Red track needs attention ⚠️

Building

Build

Use your knowledge to build the Red track itself

Build Test Runners

Create Test Runners that have the single responsibility of taking a solution, running all tests and returning a standardized output.

Usage statistics

Total Test Runner Runs

3,324

Test Run Pass Rate

18.5% (614)

Test Run Fail Rate

69.4% (2306)

Test Run Error Rate

12.2% (404)

Build Analyzers

Build an Analyzer for Red: Exercism's analyzers automatically assess student's submissions and provide mentor-style commentary.

Next goal: Build an Analyzer. Find out more.

Build Representers

Build a Representer: a bit of code that has the single responsibility of taking a solution and returning a normalized representation of it.

Next goal: Build a Representer. Find out more.

Create Practice Exercises

Practice Exercises are exercises designed to allow students to solve an arbitrary problem, with the aim of them making use of the concepts they have learned so far.

Next goal: Implement at least 30 practice exercises. Find out more.

Usage statistics

20 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

127

211 (avg. 1.7)

100 (78.7%)

0 (0.0%)

Two Fer

73

416 (avg. 5.7)

44 (60.3%)

4 (5.5%)

Reverse String

48

483 (avg. 10.1)

38 (79.2%)

2 (4.2%)

Resistor Color

37

185 (avg. 5.0)

30 (81.1%)

0 (0.0%)

Protein Translation

27

276 (avg. 10.2)

21 (77.8%)

0 (0.0%)

Space Age

25

167 (avg. 6.7)

21 (84.0%)

0 (0.0%)

Raindrops

21

90 (avg. 4.3)

18 (85.7%)

1 (4.8%)

Resistor Color Duo

15

114 (avg. 7.6)

13 (86.7%)

0 (0.0%)

Darts

18

83 (avg. 4.6)

15 (83.3%)

0 (0.0%)

Rotational Cipher

16

251 (avg. 15.7)

9 (56.3%)

1 (6.3%)

Roman Numerals

13

194 (avg. 14.9)

9 (69.2%)

0 (0.0%)

Resistor Color Trio

12

310 (avg. 25.8)

9 (75.0%)

1 (8.3%)

Largest Series Product

8

350 (avg. 43.8)

7 (87.5%)

1 (12.5%)

SGF Parsing

7

48 (avg. 6.9)

1 (14.3%)

0 (0.0%)

High Scores

5

7 (avg. 1.4)

2 (40.0%)

0 (0.0%)

Run-Length Encoding

5

30 (avg. 6.0)

2 (40.0%)

0 (0.0%)

Simple Linked List

5

2 (avg. 0.4)

1 (20.0%)

0 (0.0%)

Bowling

5

60 (avg. 12.0)

1 (20.0%)

0 (0.0%)

POV

4

35 (avg. 8.8)

1 (25.0%)

0 (0.0%)

Circular Buffer

5

19 (avg. 3.8)

2 (40.0%)

0 (0.0%)

108 unimplemented practice exercises

Acronym

Affine Cipher

All Your Base

Allergies

Alphametics

Anagram

Armstrong Numbers

Atbash Cipher

Bank Account

Binary Search

Binary Search Tree

Bob

Book Store

Bottle Song

Change

Clock

Collatz Conjecture

Complex Numbers

Connect

Crypto Square

Custom Set

D&D Character

DOT DSL

Diamond

Difference of Squares

Dominoes

ETL

Error Handling

Flatten Array

Food Chain

Forth

Gigasecond

Go Counting

Grade School

Grains

Grep

Hamming

Hangman

House

ISBN Verifier

Isogram

Killer Sudoku Helper

Kindergarten Garden

Knapsack

Leap

Ledger

Lens Person

Linked List

List Ops

Luhn

Markdown

Matching Brackets

Matrix

Meetup

Micro Blog

Minesweeper

Nth Prime

Nucleotide Count

OCR Numbers

PaaS I/O

Palindrome Products

Pangram

Parallel Letter Frequency

Pascal's Triangle

Perfect Numbers

Phone Number

Pig Latin

Poker

Prime Factors

Proverb

Pythagorean Triplet

Queen Attack

REST API

RNA Transcription

Rail Fence Cipher

Rational Numbers

React

Rectangles

Robot Name

Robot Simulator

Saddle Points

Satellite

Say

Scale Generator

Scrabble Score

Secret Handshake

Series

Sieve

Simple Cipher

Spiral Matrix

Square Root

State of Tic-Tac-Toe

Strain

Sublist

Sum of Multiples

Tournament

Transpose

Tree Building

Triangle

Twelve Days

Two Bucket

Variable Length Quantity

Word Count

Word Search

Wordy

Yacht

Zebra Puzzle

Zipper

Volunteers

6

loziniak

748

ErikSchierboom

227

dander

75

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