R impact and status on Exercism

15,171 students

About R

Practice

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263 mentors

R Track Management

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

Students

15,171

Submissions

117,436

Mentoring Discussions

1,612

The R track needs attention ⚠️

Building

Practice Exercises

Learn More

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: 61e35a780aeae6d170e9d71b9e3bb6bd964b26a3 (Updates should be instant)

Next goal: Implement 134 practice exercises. Find out more.

82 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

9,477

18,857 (avg. 2.0)

6,441 (68.0%)

1 (0.0%)

Two Fer

4,399

24,320 (avg. 5.5)

2,085 (47.4%)

423 (9.6%)

Leap

2,333

8,885 (avg. 3.8)

1,663 (71.3%)

308 (13.2%)

Darts

708

2,497 (avg. 3.5)

515 (72.7%)

19 (2.7%)

Raindrops

1,752

9,816 (avg. 5.6)

1,399 (79.9%)

175 (10.0%)

Hamming

1,142

6,215 (avg. 5.4)

874 (76.5%)

156 (13.7%)

Phone Number

768

6,979 (avg. 9.1)

502 (65.4%)

69 (9.0%)

Anagram

561

3,985 (avg. 7.1)

377 (67.2%)

67 (11.9%)

Word Count

521

2,979 (avg. 5.7)

293 (56.2%)

41 (7.9%)

Rotational Cipher

304

1,686 (avg. 5.5)

218 (71.7%)

27 (8.9%)

Tournament

320

2,376 (avg. 7.4)

153 (47.8%)

23 (7.2%)

Difference of Squares

632

1,403 (avg. 2.2)

536 (84.8%)

46 (7.3%)

Grains

439

1,225 (avg. 2.8)

353 (80.4%)

38 (8.7%)

Space Age

365

1,748 (avg. 4.8)

284 (77.8%)

24 (6.6%)

Collatz Conjecture

295

1,556 (avg. 5.3)

224 (75.9%)

13 (4.4%)

Perfect Numbers

280

1,223 (avg. 4.4)

211 (75.4%)

27 (9.6%)

Sieve

217

833 (avg. 3.8)

156 (71.9%)

9 (4.1%)

Acronym

237

1,142 (avg. 4.8)

163 (68.8%)

12 (5.1%)

Fizz Buzz

257

1,035 (avg. 4.0)

206 (80.2%)

9 (3.5%)

Secret Handshake

189

554 (avg. 2.9)

132 (69.8%)

11 (5.8%)

RNA Transcription

314

826 (avg. 2.6)

238 (75.8%)

22 (7.0%)

ETL

117

610 (avg. 5.2)

75 (64.1%)

2 (1.7%)

Allergies

185

539 (avg. 2.9)

119 (64.3%)

3 (1.6%)

Luhn

172

833 (avg. 4.8)

119 (69.2%)

6 (3.5%)

Bob

253

1,186 (avg. 4.7)

181 (71.5%)

37 (14.6%)

Isogram

189

537 (avg. 2.8)

141 (74.6%)

4 (2.1%)

Pangram

162

465 (avg. 2.9)

126 (77.8%)

5 (3.1%)

Sum of Multiples

232

630 (avg. 2.7)

174 (75.0%)

26 (11.2%)

Beer Song

145

687 (avg. 4.7)

99 (68.3%)

1 (0.7%)

Prime Factors

160

460 (avg. 2.9)

117 (73.1%)

3 (1.9%)

Triangle

175

798 (avg. 4.6)

92 (52.6%)

3 (1.7%)

Nucleotide Count

168

742 (avg. 4.4)

118 (70.2%)

4 (2.4%)

Scrabble Score

158

414 (avg. 2.6)

120 (75.9%)

4 (2.5%)

Diamond

122

636 (avg. 5.2)

76 (62.3%)

2 (1.6%)

Largest Series Product

168

702 (avg. 4.2)

121 (72.0%)

8 (4.8%)

Pascal's Triangle

165

691 (avg. 4.2)

101 (61.2%)

7 (4.2%)

Crypto Square

168

1,874 (avg. 11.2)

96 (57.1%)

5 (3.0%)

Saddle Points

367 (avg. 4.4)

63 (75.9%)

2 (2.4%)

Complex Numbers

2 (avg. 0.5)

1 (25.0%)

0 (0.0%)

Armstrong Numbers

255 (avg. 3.2)

69 (87.3%)

2 (2.5%)

Queen Attack

289 (avg. 4.4)

46 (70.8%)

0 (0.0%)

Pythagorean Triplet

236 (avg. 5.4)

34 (77.3%)

1 (2.3%)

Reverse String

232 (avg. 3.1)

62 (82.7%)

2 (2.7%)

Roman Numerals

155 (avg. 3.1)

41 (82.0%)

1 (2.0%)

Protein Translation

425 (avg. 9.2)

33 (71.7%)

0 (0.0%)

Eliud's Eggs

71 (avg. 1.8)

36 (92.3%)

0 (0.0%)

All Your Base

561 (avg. 9.7)

42 (72.4%)

0 (0.0%)

Robot Simulator

120 (avg. 3.1)

23 (59.0%)

0 (0.0%)

Series

60 (avg. 3.3)

17 (94.4%)

0 (0.0%)

Conway's Game of Life

83 (avg. 6.4)

12 (92.3%)

0 (0.0%)

Gigasecond

28 (avg. 1.8)

14 (87.5%)

0 (0.0%)

Square Root

26 (avg. 1.5)

14 (82.4%)

0 (0.0%)

Knapsack

66 (avg. 5.5)

10 (83.3%)

0 (0.0%)

High Scores

60 (avg. 3.8)

14 (87.5%)

0 (0.0%)

ISBN Verifier

111 (avg. 6.9)

12 (75.0%)

0 (0.0%)

Kindergarten Garden

63 (avg. 4.5)

11 (78.6%)

0 (0.0%)

Atbash Cipher

73 (avg. 5.6)

11 (84.6%)

0 (0.0%)

Rail Fence Cipher

231 (avg. 23.1)

8 (80.0%)

0 (0.0%)

Flatten Array

34 (avg. 2.6)

13 (100.0%)

0 (0.0%)

Matching Brackets

99 (avg. 7.6)

13 (100.0%)

0 (0.0%)

Matrix

137 (avg. 9.1)

12 (80.0%)

0 (0.0%)

Resistor Color

38 (avg. 2.9)

12 (92.3%)

0 (0.0%)

Resistor Color Duo

36 (avg. 3.0)

12 (100.0%)

0 (0.0%)

Simple Cipher

155 (avg. 11.9)

11 (84.6%)

0 (0.0%)

Strain

97 (avg. 8.1)

11 (91.7%)

0 (0.0%)

Proverb

36 (avg. 3.0)

9 (75.0%)

0 (0.0%)

Zebra Puzzle

81 (avg. 5.4)

7 (46.7%)

0 (0.0%)

Twelve Days

60 (avg. 4.6)

10 (76.9%)

0 (0.0%)

House

62 (avg. 5.6)

9 (81.8%)

0 (0.0%)

Run-Length Encoding

107 (avg. 7.6)

8 (57.1%)

0 (0.0%)

List Ops

119 (avg. 13.2)

6 (66.7%)

0 (0.0%)

D&D Character

161 (avg. 16.1)

10 (100.0%)

0 (0.0%)

Binary Search

32 (avg. 2.7)

10 (83.3%)

0 (0.0%)

Robot Name

35 (avg. 2.9)

8 (66.7%)

0 (0.0%)

Food Chain

224 (avg. 16.0)

9 (64.3%)

0 (0.0%)

Clock

128 (avg. 11.6)

9 (81.8%)

0 (0.0%)

Nth Prime

119 (avg. 9.2)

9 (69.2%)

0 (0.0%)

Killer Sudoku Helper

16 (avg. 1.8)

5 (55.6%)

0 (0.0%)

Change

21 (avg. 3.0)

3 (42.9%)

0 (0.0%)

Pig Latin

77 (avg. 15.4)

4 (80.0%)

0 (0.0%)

Sublist

25 (avg. 6.3)

3 (75.0%)

0 (0.0%)

Resistor Color Trio

48 (avg. 8.0)

4 (66.7%)

0 (0.0%)

52 unimplemented practice exercises

Affine Cipher

Alphametics

Baffling Birthdays

Bank Account

Binary Search Tree

Book Store

Bottle Song

Bowling

Circular Buffer

Connect

Custom Set

Dominoes

DOT DSL

Error Handling

Forth

Go Counting

Grade School

Grep

Hangman

Ledger

Lens Person

Linked List

Markdown

Meetup

Micro Blog

Minesweeper

OCR Numbers

PaaS I/O

Palindrome Products

Parallel Letter Frequency

Poker

POV

Rational Numbers

React

Rectangles

Relative Distance

REST API

Satellite

Say

SGF Parsing

Simple Linked List

Spiral Matrix

State of Tic-Tac-Toe

Swift Scheduling

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: 9d0baa70733051955c3e5841f9227240b711270b (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

114,671

Test Run Pass Rate

21.7% (24872)

Test Run Fail Rate

77.2% (88569)

Test Run Error Rate

1.1% (1230)

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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