R impact and status on Exercism

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Practice

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259 mentors

R Track Management

This page provides the Exercism community with the information and tools needed to manage the R track.

Students

14,300

Submissions

106,046

Mentoring Discussions

1,583

The R track needs attention ⚠️

Building

Practice Exercises

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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.

Synced primary repo: c734ffd564a0f90c081daab0bc538806abb3988a (Updates should be instant)

Next goal: Implement 131 practice exercises. Find out more.

76 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

8,686

17,348 (avg. 2.0)

5,951 (68.5%)

1 (0.0%)

Two Fer

4,047

22,130 (avg. 5.5)

1,927 (47.6%)

409 (10.1%)

Leap

2,169

8,211 (avg. 3.8)

1,558 (71.8%)

303 (14.0%)

Darts

590

2,140 (avg. 3.6)

427 (72.4%)

20 (3.4%)

Raindrops

1,666

9,352 (avg. 5.6)

1,333 (80.0%)

170 (10.2%)

Hamming

1,078

5,857 (avg. 5.4)

825 (76.5%)

156 (14.5%)

Phone Number

713

6,309 (avg. 8.8)

470 (65.9%)

69 (9.7%)

Anagram

524

3,718 (avg. 7.1)

356 (67.9%)

67 (12.8%)

Word Count

487

2,761 (avg. 5.7)

277 (56.9%)

41 (8.4%)

Rotational Cipher

288

1,580 (avg. 5.5)

206 (71.5%)

27 (9.4%)

Tournament

303

2,238 (avg. 7.4)

144 (47.5%)

22 (7.3%)

Difference of Squares

593

1,312 (avg. 2.2)

502 (84.7%)

46 (7.8%)

Grains

419

1,144 (avg. 2.7)

339 (80.9%)

38 (9.1%)

Space Age

348

1,438 (avg. 4.1)

272 (78.2%)

23 (6.6%)

Collatz Conjecture

279

1,460 (avg. 5.2)

212 (76.0%)

12 (4.3%)

Perfect Numbers

268

1,157 (avg. 4.3)

200 (74.6%)

26 (9.7%)

Sieve

207

793 (avg. 3.8)

146 (70.5%)

9 (4.3%)

Acronym

228

1,090 (avg. 4.8)

155 (68.0%)

12 (5.3%)

Fizz Buzz

247

990 (avg. 4.0)

197 (79.8%)

9 (3.6%)

Secret Handshake

180

528 (avg. 2.9)

124 (68.9%)

11 (6.1%)

RNA Transcription

304

796 (avg. 2.6)

230 (75.7%)

22 (7.2%)

ETL

105

532 (avg. 5.1)

66 (62.9%)

2 (1.9%)

Allergies

175

441 (avg. 2.5)

111 (63.4%)

3 (1.7%)

Luhn

160

791 (avg. 4.9)

111 (69.4%)

5 (3.1%)

Bob

246

1,099 (avg. 4.5)

175 (71.1%)

37 (15.0%)

Isogram

172

453 (avg. 2.6)

134 (77.9%)

4 (2.3%)

Pangram

155

444 (avg. 2.9)

120 (77.4%)

5 (3.2%)

Sum of Multiples

222

594 (avg. 2.7)

166 (74.8%)

26 (11.7%)

Beer Song

138

594 (avg. 4.3)

94 (68.1%)

1 (0.7%)

Prime Factors

152

438 (avg. 2.9)

110 (72.4%)

3 (2.0%)

Triangle

166

707 (avg. 4.3)

86 (51.8%)

2 (1.2%)

Nucleotide Count

158

680 (avg. 4.3)

109 (69.0%)

3 (1.9%)

Scrabble Score

147

362 (avg. 2.5)

110 (74.8%)

3 (2.0%)

Diamond

115

618 (avg. 5.4)

70 (60.9%)

1 (0.9%)

Largest Series Product

162

681 (avg. 4.2)

116 (71.6%)

7 (4.3%)

Pascal's Triangle

159

673 (avg. 4.2)

95 (59.7%)

7 (4.4%)

Crypto Square

162

1,779 (avg. 11.0)

91 (56.2%)

5 (3.1%)

Saddle Points

333 (avg. 4.3)

57 (74.0%)

2 (2.6%)

Armstrong Numbers

212 (avg. 3.1)

61 (88.4%)

2 (2.9%)

Queen Attack

252 (avg. 4.3)

40 (67.8%)

0 (0.0%)

Pythagorean Triplet

200 (avg. 5.4)

27 (73.0%)

0 (0.0%)

Reverse String

209 (avg. 3.2)

53 (80.3%)

1 (1.5%)

Roman Numerals

133 (avg. 3.2)

32 (78.0%)

0 (0.0%)

Protein Translation

392 (avg. 9.8)

27 (67.5%)

0 (0.0%)

Eliud's Eggs

61 (avg. 2.1)

27 (93.1%)

0 (0.0%)

All Your Base

504 (avg. 9.5)

35 (66.0%)

0 (0.0%)

Robot Simulator

84 (avg. 2.6)

17 (53.1%)

0 (0.0%)

Series

28 (avg. 4.0)

7 (100.0%)

0 (0.0%)

Conway's Game of Life

19 (avg. 3.2)

4 (66.7%)

0 (0.0%)

Gigasecond

8 (avg. 1.3)

5 (83.3%)

0 (0.0%)

Square Root

11 (avg. 1.6)

4 (57.1%)

0 (0.0%)

Knapsack

1 (avg. 0.5)

1 (50.0%)

0 (0.0%)

High Scores

23 (avg. 4.6)

5 (100.0%)

0 (0.0%)

ISBN Verifier

54 (avg. 10.8)

5 (100.0%)

0 (0.0%)

Kindergarten Garden

54 (avg. 10.8)

4 (80.0%)

0 (0.0%)

Atbash Cipher

44 (avg. 11.0)

3 (75.0%)

0 (0.0%)

Rail Fence Cipher

1 (avg. 0.5)

1 (50.0%)

0 (0.0%)

Flatten Array

18 (avg. 3.6)

4 (80.0%)

0 (0.0%)

Matching Brackets

3 (avg. 1.0)

2 (66.7%)

0 (0.0%)

Matrix

65 (avg. 16.3)

3 (75.0%)

0 (0.0%)

Resistor Color

14 (avg. 3.5)

4 (100.0%)

0 (0.0%)

Resistor Color Duo

21 (avg. 5.3)

4 (100.0%)

0 (0.0%)

Simple Cipher

9 (avg. 2.3)

2 (50.0%)

0 (0.0%)

Strain

3 (avg. 1.5)

2 (100.0%)

0 (0.0%)

Proverb

12 (avg. 4.0)

2 (66.7%)

0 (0.0%)

Zebra Puzzle

1 (avg. 0.5)

1 (50.0%)

0 (0.0%)

Twelve Days

1 (avg. 0.5)

1 (50.0%)

0 (0.0%)

House

1 (avg. 0.5)

1 (50.0%)

0 (0.0%)

Run-Length Encoding

1 (avg. 0.5)

1 (50.0%)

0 (0.0%)

List Ops

0 (avg. 0.0)

0 (0.0%)

D&D Character

0 (avg. 0.0)

0 (0.0%)

Binary Search

1 (avg. 1.0)

1 (100.0%)

0 (0.0%)

Robot Name

0 (avg. 0.0)

0 (0.0%)

Food Chain

0 (avg. 0.0)

0 (0.0%)

Clock

1 (avg. 0.5)

1 (50.0%)

0 (0.0%)

Nth Prime

3 (avg. 1.5)

1 (50.0%)

0 (0.0%)

55 unimplemented practice exercises

Affine Cipher

Alphametics

Bank Account

Binary Search Tree

Book Store

Bottle Song

Bowling

Change

Circular Buffer

Complex Numbers

Connect

Custom Set

Dominoes

DOT DSL

Error Handling

Forth

Go Counting

Grade School

Grep

Hangman

Killer Sudoku Helper

Ledger

Lens Person

Linked List

Markdown

Meetup

Micro Blog

Minesweeper

OCR Numbers

PaaS I/O

Palindrome Products

Parallel Letter Frequency

Pig Latin

Poker

POV

Rational Numbers

React

Rectangles

Resistor Color Trio

REST API

Satellite

Say

SGF Parsing

Simple Linked List

Spiral Matrix

State of Tic-Tac-Toe

Sublist

Transpose

Tree Building

Two Bucket

Variable Length Quantity

Word Search

Wordy

Yacht

Zipper

Programming Tags

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Help manage the tags used to group, filter and recommend solutions, approaches and articles.

0 tags

Test Runner

Learn More

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

Current version: 106fe72af2af0d7570adacc640242538fb36ca76 (Takes up to 10 mins to deploy)

Next goal: Get Test Runners to Version 2. R is currently utilising a Version 1 Test Runner. Find out more.

Total Test Runner Runs

103,310

Test Run Pass Rate

21.9% (22662)

Test Run Fail Rate

77.0% (79509)

Test Run Error Rate

1.1% (1139)

Representer

Learn More

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.

Analyzer

Learn More

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

Next goal: Build an Analyzer. Find out more.

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