11,373 students

About R

Practice

30 contributors

242 mentors

11,373
students have developed their R skills on Exercism.

Students

11,373

Submissions

68,430

Mentoring Discussions

1,458

The R track needs attention ⚠️

Building

Build

Use your knowledge to build the R track itself

30 contributors

Build Test Runners

Learn More

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

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

Usage statistics

Total Test Runner Runs

65,086

Test Run Pass Rate

22.6% (14702)

Test Run Fail Rate

76.3% (49651)

Test Run Error Rate

1.1% (733)

Build Analyzers

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.

Build Representers

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.

Create 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.

Next goal: Implement at least 50 practice exercises. Find out more.

Usage statistics

40 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

5,943

12,630 (avg. 2.1)

4,102 (69.0%)

1 (0.0%)

Two Fer

2,962

15,036 (avg. 5.1)

1,445 (48.8%)

379 (12.8%)

Leap

1,652

5,824 (avg. 3.5)

1,198 (72.5%)

291 (17.6%)

Darts

197

725 (avg. 3.7)

155 (78.7%)

8 (4.1%)

Raindrops

1,004

4,930 (avg. 4.9)

733 (73.0%)

157 (15.6%)

Hamming

836

4,353 (avg. 5.2)

636 (76.1%)

150 (17.9%)

Phone Number

517

4,094 (avg. 7.9)

337 (65.2%)

63 (12.2%)

Anagram

381

2,589 (avg. 6.8)

261 (68.5%)

58 (15.2%)

Word Count

345

1,423 (avg. 4.1)

211 (61.2%)

35 (10.1%)

Rotational Cipher

201

1,041 (avg. 5.2)

141 (70.1%)

24 (11.9%)

Tournament

204

1,273 (avg. 6.2)

103 (50.5%)

19 (9.3%)

Difference of Squares

417

755 (avg. 1.8)

335 (80.3%)

43 (10.3%)

Grains

335

787 (avg. 2.3)

264 (78.8%)

36 (10.7%)

Space Age

267

866 (avg. 3.2)

213 (79.8%)

22 (8.2%)

Collatz Conjecture

204

1,001 (avg. 4.9)

152 (74.5%)

8 (3.9%)

Perfect Numbers

216

739 (avg. 3.4)

165 (76.4%)

23 (10.6%)

Sieve

158

488 (avg. 3.1)

109 (69.0%)

8 (5.1%)

Acronym

178

658 (avg. 3.7)

116 (65.2%)

10 (5.6%)

Fizz Buzz

182

672 (avg. 3.7)

140 (76.9%)

8 (4.4%)

Secret Handshake

139

238 (avg. 1.7)

93 (66.9%)

10 (7.2%)

RNA Transcription

247

541 (avg. 2.2)

182 (73.7%)

20 (8.1%)

ETL

152 (avg. 2.5)

35 (58.3%)

1 (1.7%)

Allergies

127

274 (avg. 2.2)

77 (60.6%)

2 (1.6%)

Luhn

117

526 (avg. 4.5)

78 (66.7%)

3 (2.6%)

Bob

204

832 (avg. 4.1)

147 (72.1%)

36 (17.6%)

Isogram

131

282 (avg. 2.2)

101 (77.1%)

3 (2.3%)

Pangram

121

332 (avg. 2.7)

86 (71.1%)

3 (2.5%)

Sum of Multiples

172

412 (avg. 2.4)

129 (75.0%)

25 (14.5%)

Beer Song

106

372 (avg. 3.5)

71 (67.0%)

0 (0.0%)

Prime Factors

118

293 (avg. 2.5)

81 (68.6%)

1 (0.8%)

Triangle

123

479 (avg. 3.9)

65 (52.8%)

1 (0.8%)

Nucleotide Count

123

405 (avg. 3.3)

80 (65.0%)

1 (0.8%)

Scrabble Score

120

299 (avg. 2.5)

86 (71.7%)

3 (2.5%)

Diamond

500 (avg. 5.7)

52 (59.1%)

1 (1.1%)

Largest Series Product

128

488 (avg. 3.8)

87 (68.0%)

7 (5.5%)

Pascal's Triangle

130

500 (avg. 3.8)

73 (56.2%)

7 (5.4%)

Crypto Square

122

1,305 (avg. 10.7)

70 (57.4%)

5 (4.1%)

Saddle Points

139 (avg. 3.0)

31 (67.4%)

2 (4.3%)

Armstrong Numbers

80 (avg. 3.2)

24 (96.0%)

1 (4.0%)

Queen Attack

87 (avg. 4.4)

13 (65.0%)

0 (0.0%)

90 unimplemented practice exercises

Affine Cipher

All Your Base

Alphametics

Atbash Cipher

Bank Account

Binary Search

Binary Search Tree

Book Store

Bottle Song

Bowling

Change

Circular Buffer

Clock

Complex Numbers

Connect

Custom Set

D&D Character

DOT DSL

Dominoes

Error Handling

Flatten Array

Food Chain

Forth

Gigasecond

Go Counting

Grade School

Grep

Hangman

High Scores

House

ISBN Verifier

Killer Sudoku Helper

Kindergarten Garden

Knapsack

Ledger

Lens Person

Linked List

List Ops

Markdown

Matching Brackets

Matrix

Meetup

Micro Blog

Minesweeper

Nth Prime

OCR Numbers

POV

PaaS I/O

Palindrome Products

Parallel Letter Frequency

Pig Latin

Poker

Protein Translation

Proverb

Pythagorean Triplet

REST API

Rail Fence Cipher

Rational Numbers

React

Rectangles

Resistor Color

Resistor Color Duo

Resistor Color Trio

Reverse String

Robot Name

Robot Simulator

Roman Numerals

Run-Length Encoding

SGF Parsing

Satellite

Say

Scale Generator

Series

Simple Cipher

Simple Linked List

Spiral Matrix

Square Root

State of Tic-Tac-Toe

Strain

Sublist

Transpose

Tree Building

Twelve Days

Two Bucket

Variable Length Quantity

Word Search

Wordy

Yacht

Zebra Puzzle

Zipper

Volunteers

jonmcalder

2,228

shanedrabing

1,657

katrinleinweber

1,129

+ 61 more

We 💙 our volunteers

Exercism relies on open-source volunteers to build our language tracks and mentor students.

Become an Exercism Volunteer

Language Tracks

#12in23 Challenge

Your Journey

Exercism Perks

Community Videos

Brief Introduction Series

Interviews & Stories

Discord

Forum

Getting started

Mentoring

Docs

Contributors

Donate

About Exercism

Our Impact

Insiders

SWAG

11,373 students have developed their R skills on Exercism.

The R track needs attention ⚠️

Build

Build Test Runners

Usage statistics

Build Analyzers

Build Representers

Create Practice Exercises

Usage statistics

We 💙 our volunteers

11,373
students have developed their R skills on Exercism.