R impact and status on Exercism

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Practice

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264 mentors

R Track Management

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

Students

15,822

Submissions

125,222

Mentoring Discussions

1,616

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: ca673202f52f36478375777dbac4560242305a3a (Updates should be instant)

Next goal: Implement 137 practice exercises. Find out more.

83 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

10,056

20,021 (avg. 2.0)

6,816 (67.8%)

1 (0.0%)

Two Fer

4,686

26,002 (avg. 5.5)

2,228 (47.5%)

429 (9.2%)

Leap

2,492

9,468 (avg. 3.8)

1,777 (71.3%)

309 (12.4%)

Darts

831

2,876 (avg. 3.5)

608 (73.2%)

19 (2.3%)

Raindrops

1,848

10,290 (avg. 5.6)

1,483 (80.2%)

175 (9.5%)

Hamming

1,231

6,711 (avg. 5.5)

946 (76.8%)

158 (12.8%)

Phone Number

836

7,581 (avg. 9.1)

550 (65.8%)

71 (8.5%)

Anagram

615

4,226 (avg. 6.9)

412 (67.0%)

67 (10.9%)

Word Count

573

3,213 (avg. 5.6)

325 (56.7%)

41 (7.2%)

Rotational Cipher

343

1,780 (avg. 5.2)

252 (73.5%)

27 (7.9%)

Tournament

359

2,637 (avg. 7.3)

173 (48.2%)

24 (6.7%)

Difference of Squares

670

1,500 (avg. 2.2)

569 (84.9%)

46 (6.9%)

Grains

472

1,312 (avg. 2.8)

382 (80.9%)

38 (8.1%)

Space Age

400

1,887 (avg. 4.7)

310 (77.5%)

24 (6.0%)

Collatz Conjecture

328

1,687 (avg. 5.1)

252 (76.8%)

13 (4.0%)

Perfect Numbers

301

1,373 (avg. 4.6)

226 (75.1%)

28 (9.3%)

Sieve

236

898 (avg. 3.8)

167 (70.8%)

9 (3.8%)

Acronym

251

1,183 (avg. 4.7)

172 (68.5%)

12 (4.8%)

Fizz Buzz

276

1,096 (avg. 4.0)

221 (80.1%)

9 (3.3%)

Secret Handshake

196

570 (avg. 2.9)

136 (69.4%)

11 (5.6%)

RNA Transcription

328

865 (avg. 2.6)

248 (75.6%)

22 (6.7%)

ETL

123

620 (avg. 5.0)

77 (62.6%)

2 (1.6%)

Allergies

194

566 (avg. 2.9)

122 (62.9%)

3 (1.5%)

Luhn

178

861 (avg. 4.8)

124 (69.7%)

6 (3.4%)

Bob

261

1,225 (avg. 4.7)

186 (71.3%)

37 (14.2%)

Isogram

194

556 (avg. 2.9)

144 (74.2%)

4 (2.1%)

Pangram

168

471 (avg. 2.8)

131 (78.0%)

5 (3.0%)

Sum of Multiples

238

645 (avg. 2.7)

178 (74.8%)

26 (10.9%)

Beer Song

150

720 (avg. 4.8)

101 (67.3%)

1 (0.7%)

Prime Factors

166

475 (avg. 2.9)

121 (72.9%)

3 (1.8%)

Triangle

183

827 (avg. 4.5)

94 (51.4%)

3 (1.6%)

Nucleotide Count

174

755 (avg. 4.3)

121 (69.5%)

4 (2.3%)

Scrabble Score

160

415 (avg. 2.6)

121 (75.6%)

4 (2.5%)

Diamond

126

649 (avg. 5.2)

78 (61.9%)

2 (1.6%)

Largest Series Product

171

716 (avg. 4.2)

123 (71.9%)

8 (4.7%)

Pascal's Triangle

168

692 (avg. 4.1)

102 (60.7%)

7 (4.2%)

Crypto Square

180

1,954 (avg. 10.9)

102 (56.7%)

5 (2.8%)

Saddle Points

374 (avg. 4.3)

65 (75.6%)

2 (2.3%)

Complex Numbers

56 (avg. 3.5)

9 (56.3%)

0 (0.0%)

Armstrong Numbers

260 (avg. 3.1)

71 (85.5%)

2 (2.4%)

Queen Attack

295 (avg. 4.4)

47 (70.1%)

0 (0.0%)

Pythagorean Triplet

238 (avg. 5.2)

35 (76.1%)

1 (2.2%)

Reverse String

249 (avg. 3.0)

65 (79.3%)

2 (2.4%)

Roman Numerals

165 (avg. 3.0)

44 (80.0%)

1 (1.8%)

Protein Translation

455 (avg. 8.8)

35 (67.3%)

0 (0.0%)

Eliud's Eggs

74 (avg. 1.8)

38 (90.5%)

0 (0.0%)

All Your Base

595 (avg. 9.2)

46 (70.8%)

0 (0.0%)

Robot Simulator

120 (avg. 3.0)

23 (57.5%)

0 (0.0%)

Series

74 (avg. 3.4)

19 (86.4%)

0 (0.0%)

Conway's Game of Life

93 (avg. 5.2)

15 (83.3%)

0 (0.0%)

Gigasecond

28 (avg. 1.6)

14 (77.8%)

0 (0.0%)

Square Root

33 (avg. 1.7)

16 (80.0%)

0 (0.0%)

Knapsack

68 (avg. 4.5)

12 (80.0%)

0 (0.0%)

High Scores

60 (avg. 3.5)

14 (82.4%)

0 (0.0%)

ISBN Verifier

111 (avg. 6.5)

12 (70.6%)

0 (0.0%)

Kindergarten Garden

63 (avg. 4.2)

11 (73.3%)

0 (0.0%)

Atbash Cipher

73 (avg. 5.2)

11 (78.6%)

0 (0.0%)

Rail Fence Cipher

234 (avg. 18.0)

9 (69.2%)

0 (0.0%)

Flatten Array

44 (avg. 2.9)

14 (93.3%)

0 (0.0%)

Matching Brackets

99 (avg. 6.6)

13 (86.7%)

0 (0.0%)

Matrix

138 (avg. 7.7)

12 (66.7%)

0 (0.0%)

Resistor Color

39 (avg. 2.6)

13 (86.7%)

0 (0.0%)

Resistor Color Duo

36 (avg. 2.8)

12 (92.3%)

0 (0.0%)

Simple Cipher

155 (avg. 11.1)

11 (78.6%)

0 (0.0%)

Strain

97 (avg. 7.5)

11 (84.6%)

0 (0.0%)

Proverb

36 (avg. 2.8)

9 (69.2%)

0 (0.0%)

Zebra Puzzle

81 (avg. 4.8)

7 (41.2%)

0 (0.0%)

Twelve Days

60 (avg. 4.3)

10 (71.4%)

0 (0.0%)

House

62 (avg. 5.2)

9 (75.0%)

0 (0.0%)

Run-Length Encoding

112 (avg. 5.9)

10 (52.6%)

0 (0.0%)

List Ops

123 (avg. 8.8)

8 (57.1%)

0 (0.0%)

D&D Character

163 (avg. 13.6)

11 (91.7%)

0 (0.0%)

Binary Search

39 (avg. 2.6)

11 (73.3%)

0 (0.0%)

Robot Name

57 (avg. 3.0)

12 (63.2%)

0 (0.0%)

Food Chain

224 (avg. 14.0)

9 (56.3%)

0 (0.0%)

Clock

140 (avg. 8.2)

13 (76.5%)

0 (0.0%)

Nth Prime

146 (avg. 7.3)

14 (70.0%)

0 (0.0%)

Killer Sudoku Helper

21 (avg. 1.8)

8 (66.7%)

0 (0.0%)

Change

47 (avg. 3.6)

7 (53.8%)

0 (0.0%)

Pig Latin

94 (avg. 8.5)

9 (81.8%)

0 (0.0%)

Sublist

48 (avg. 4.4)

6 (54.5%)

0 (0.0%)

Resistor Color Trio

73 (avg. 6.1)

10 (83.3%)

0 (0.0%)

Say

16 (avg. 5.3)

2 (66.7%)

0 (0.0%)

54 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

Flower Field

Forth

Go Counting

Grade School

Grep

Hangman

Intergalactic Transmission

Ledger

Lens Person

Linked List

Markdown

Meetup

Micro Blog

OCR Numbers

PaaS I/O

Palindrome Products

Parallel Letter Frequency

Piecing It Together

Poker

POV

Rational Numbers

React

Rectangles

Relative Distance

REST API

Satellite

SGF Parsing

Simple Linked List

Spiral Matrix

Split-Second Stopwatch

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.

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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

122,395

Test Run Pass Rate

21.7% (26512)

Test Run Fail Rate

77.3% (94569)

Test Run Error Rate

1.1% (1314)

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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