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Ruby Track Management

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

Students

57,820

Submissions

2,019,081

Mentoring Discussions

36,419

The Ruby track is healthy ✅

Building

Ruby syllabus

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Help create the track syllabus: is a set of concepts and learning exercises put together to teach foundational elements of the programming language.

Next goal: Create a complete syllabus with at least 30 concepts. Find out more.

20 concepts being taught

Basics

14,324 learnt

Instance Variables

10,109 learnt

Nil

10,109 learnt

Booleans

8,602 learnt

Strings

9,366 learnt

Conditionals

6,787 learnt

Floating Point Numbers

6,787 learnt

Numbers

6,787 learnt

Loops

5,085 learnt

Modules

5,085 learnt

Symbols

2,643 learnt

Ranges

2,184 learnt

Case

1,676 learnt

Arrays

4,477 learnt

Enumeration

4,477 learnt

Advanced Enumeration

3,764 learnt

Ostruct

3,194 learnt

Multiple Assignment and Decomposition

1,777 learnt

Ternary operator

3,181 learnt

Raising Exceptions

4,499 learnt

15 active learning exercises

Started

Attempts

Completions

Mentoring requests

Lasagna

18,365

102,332 (avg. 5.6)

14,324 (78.0%)

202 (1.1%)

Amusement Park

10,958

52,565 (avg. 4.8)

10,109 (92.3%)

110 (1.0%)

Amusement Park Improvements

9,017

56,189 (avg. 6.2)

8,602 (95.4%)

77 (0.9%)

Log line Parser

11,111

135,750 (avg. 12.2)

9,366 (84.3%)

272 (2.4%)

Assembly Line

7,292

57,180 (avg. 7.8)

6,787 (93.1%)

106 (1.5%)

Savings Account

5,807

80,233 (avg. 13.8)

5,085 (87.6%)

84 (1.4%)

Port Of Palermo

2,818

20,444 (avg. 7.3)

2,643 (93.8%)

32 (1.1%)

Chess Game

2,316

32,501 (avg. 14.0)

2,184 (94.3%)

35 (1.5%)

BlackJack

1,824

22,446 (avg. 12.3)

1,676 (91.9%)

36 (2.0%)

Bird Count

4,651

33,990 (avg. 7.3)

4,477 (96.3%)

44 (0.9%)

Boutique Inventory

4,033

74,239 (avg. 18.4)

3,764 (93.3%)

64 (1.6%)

Boutique Inventory Improvements

3,458

33,571 (avg. 9.7)

3,194 (92.4%)

41 (1.2%)

Locomotive Engineer

2,047

25,535 (avg. 12.5)

1,777 (86.8%)

25 (1.2%)

Moviegoer

3,246

22,957 (avg. 7.1)

3,181 (98.0%)

29 (0.9%)

Simple Calculator

5,937

104,344 (avg. 17.6)

4,499 (75.8%)

144 (2.4%)

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: 45bbcd7316f94c4a60e77ff5cc0453bcc5dc10bf (Updates should be instant)

Next goal: Implement 136 practice exercises. Find out more.

105 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

41,626

68,857 (avg. 1.7)

35,852 (86.1%)

112 (0.3%)

Two Fer

13,763

61,180 (avg. 4.4)

11,388 (82.7%)

3,843 (27.9%)

Resistor Color Duo

6,392

30,722 (avg. 4.8)

5,230 (81.8%)

1,608 (25.2%)

Acronym

8,608

41,985 (avg. 4.9)

7,230 (84.0%)

2,193 (25.5%)

High Scores

5,613

23,337 (avg. 4.2)

4,782 (85.2%)

1,384 (24.7%)

Reverse String

1,629

6,574 (avg. 4.0)

1,278 (78.5%)

29 (1.8%)

D&D Character

1,126

10,582 (avg. 9.4)

693 (61.5%)

35 (3.1%)

Matrix

5,073

31,089 (avg. 6.1)

4,058 (80.0%)

1,169 (23.0%)

Series

4,877

26,986 (avg. 5.5)

4,155 (85.2%)

858 (17.6%)

Word Count

6,668

39,358 (avg. 5.9)

5,504 (82.5%)

2,009 (30.1%)

Eliud's Eggs

710

3,116 (avg. 4.4)

549 (77.3%)

17 (2.4%)

Hamming

12,699

32,748 (avg. 2.6)

11,928 (93.9%)

3,354 (26.4%)

Raindrops

9,027

28,806 (avg. 3.2)

8,496 (94.1%)

1,431 (15.9%)

Isogram

4,509

30,192 (avg. 6.7)

3,944 (87.5%)

647 (14.3%)

Scrabble Score

3,337

19,090 (avg. 5.7)

2,908 (87.1%)

543 (16.3%)

Luhn

3,299

37,896 (avg. 11.5)

2,478 (75.1%)

393 (11.9%)

Clock

3,055

29,720 (avg. 9.7)

2,242 (73.4%)

388 (12.7%)

Twelve Days

2,454

14,892 (avg. 6.1)

1,761 (71.8%)

246 (10.0%)

Tournament

3,668

56,537 (avg. 15.4)

1,772 (48.3%)

268 (7.3%)

Gigasecond

10,921

16,158 (avg. 1.5)

9,784 (89.6%)

1,166 (10.7%)

Resistor Color

2,580

6,740 (avg. 2.6)

2,269 (87.9%)

114 (4.4%)

RNA Transcription

9,696

24,565 (avg. 2.5)

9,023 (93.1%)

1,633 (16.8%)

Leap

5,916

14,278 (avg. 2.4)

5,211 (88.1%)

706 (11.9%)

Pangram

5,600

17,182 (avg. 3.1)

5,145 (91.9%)

634 (11.3%)

Space Age

2,932

11,657 (avg. 4.0)

2,514 (85.7%)

244 (8.3%)

Triangle

2,175

13,339 (avg. 6.1)

1,861 (85.6%)

132 (6.1%)

Difference of Squares

6,415

13,402 (avg. 2.1)

6,111 (95.3%)

939 (14.6%)

Anagram

2,823

12,430 (avg. 4.4)

2,505 (88.7%)

714 (25.3%)

Spiral Matrix

378

3,835 (avg. 10.1)

228 (60.3%)

12 (3.2%)

Sum of Multiples

2,718

11,649 (avg. 4.3)

2,295 (84.4%)

143 (5.3%)

Transpose

1,311

20,833 (avg. 15.9)

750 (57.2%)

37 (2.8%)

Armstrong Numbers

1,461

5,673 (avg. 3.9)

1,242 (85.0%)

25 (1.7%)

Flatten Array

2,763

6,657 (avg. 2.4)

2,210 (80.0%)

112 (4.1%)

Phone Number

2,617

18,049 (avg. 6.9)

2,149 (82.1%)

172 (6.6%)

Grains

3,816

9,021 (avg. 2.4)

3,497 (91.6%)

628 (16.5%)

Resistor Color Trio

893

7,544 (avg. 8.4)

744 (83.3%)

23 (2.6%)

Saddle Points

1,056

5,834 (avg. 5.5)

830 (78.6%)

33 (3.1%)

ETL

2,058

4,816 (avg. 2.3)

1,820 (88.4%)

125 (6.1%)

Nucleotide Count

1,604

8,251 (avg. 5.1)

1,387 (86.5%)

275 (17.1%)

Pythagorean Triplet

910

6,055 (avg. 6.7)

625 (68.7%)

22 (2.4%)

Collatz Conjecture

1,193

5,308 (avg. 4.4)

1,002 (84.0%)

35 (2.9%)

Sieve

3,675

9,046 (avg. 2.5)

3,360 (91.4%)

287 (7.8%)

Proverb

1,084

6,269 (avg. 5.8)

917 (84.6%)

98 (9.0%)

Palindrome Products

1,057

6,606 (avg. 6.2)

670 (63.4%)

30 (2.8%)

Parallel Letter Frequency

250

2,735 (avg. 10.9)

133 (53.2%)

9 (3.6%)

Bob

5,172

20,202 (avg. 3.9)

4,657 (90.0%)

3,171 (61.3%)

Nth Prime

3,091

8,374 (avg. 2.7)

2,770 (89.6%)

244 (7.9%)

Perfect Numbers

643

2,341 (avg. 3.6)

528 (82.1%)

12 (1.9%)

Alphametics

1,017

4,999 (avg. 4.9)

378 (37.2%)

32 (3.1%)

Binary Search

795

3,872 (avg. 4.9)

597 (75.1%)

28 (3.5%)

Two Bucket

1,025

5,689 (avg. 5.6)

344 (33.6%)

25 (2.4%)

Matching Brackets

865

3,679 (avg. 4.3)

615 (71.1%)

24 (2.8%)

All Your Base

682

5,439 (avg. 8.0)

444 (65.1%)

10 (1.5%)

Allergies

681

3,288 (avg. 4.8)

517 (75.9%)

21 (3.1%)

Rail Fence Cipher

642

3,132 (avg. 4.9)

363 (56.5%)

10 (1.6%)

Run-Length Encoding

1,693

6,457 (avg. 3.8)

1,391 (82.2%)

87 (5.1%)

Flower Field

15 (avg. 5.0)

3 (100.0%)

0 (0.0%)

Robot Simulator

712

4,758 (avg. 6.7)

509 (71.5%)

30 (4.2%)

Bottle Song

109

1,382 (avg. 12.7)

81 (74.3%)

6 (5.5%)

Protein Translation

780

6,981 (avg. 9.0)

621 (79.6%)

20 (2.6%)

Wordy

833

7,325 (avg. 8.8)

579 (69.5%)

29 (3.5%)

Secret Handshake

631

2,901 (avg. 4.6)

477 (75.6%)

22 (3.5%)

Atbash Cipher

806

5,672 (avg. 7.0)

662 (82.1%)

24 (3.0%)

Crypto Square

1,044

5,177 (avg. 5.0)

777 (74.4%)

28 (2.7%)

List Ops

730

5,841 (avg. 8.0)

472 (64.7%)

10 (1.4%)

Robot Name

2,856

4,908 (avg. 1.7)

2,470 (86.5%)

490 (17.2%)

Simple Cipher

799

5,696 (avg. 7.1)

505 (63.2%)

24 (3.0%)

Dominoes

361

2,044 (avg. 5.7)

177 (49.0%)

9 (2.5%)

Pig Latin

611

4,070 (avg. 6.7)

413 (67.6%)

21 (3.4%)

Simple Linked List

820

7,570 (avg. 9.2)

540 (65.9%)

33 (4.0%)

Binary Search Tree

1,274

5,117 (avg. 4.0)

920 (72.2%)

97 (7.6%)

Change

535

4,282 (avg. 8.0)

257 (48.0%)

16 (3.0%)

Circular Buffer

594

3,692 (avg. 6.2)

435 (73.2%)

22 (3.7%)

Grade School

1,959

4,779 (avg. 2.4)

1,618 (82.6%)

218 (11.1%)

Roman Numerals

3,886

8,706 (avg. 2.2)

3,465 (89.2%)

320 (8.2%)

Rotational Cipher

657

5,135 (avg. 7.8)

515 (78.4%)

19 (2.9%)

Affine Cipher

431

3,076 (avg. 7.1)

266 (61.7%)

7 (1.6%)

Kindergarten Garden

555

3,317 (avg. 6.0)

404 (72.8%)

14 (2.5%)

Largest Series Product

531

2,951 (avg. 5.6)

424 (79.8%)

11 (2.1%)

Prime Factors

1,333

3,314 (avg. 2.5)

1,168 (87.6%)

60 (4.5%)

Custom Set

401

1,857 (avg. 4.6)

289 (72.1%)

10 (2.5%)

House

619

2,468 (avg. 4.0)

466 (75.3%)

32 (5.2%)

Linked List

531

1,250 (avg. 2.4)

362 (68.2%)

22 (4.1%)

Poker

399

2,070 (avg. 5.2)

175 (43.9%)

16 (4.0%)

ISBN Verifier

856

8,169 (avg. 9.5)

644 (75.2%)

31 (3.6%)

Complex Numbers

402

2,244 (avg. 5.6)

245 (60.9%)

10 (2.5%)

Meetup

2,313

9,788 (avg. 4.2)

840 (36.3%)

76 (3.3%)

Diamond

846

8,429 (avg. 10.0)

541 (63.9%)

30 (3.5%)

Bowling

1,411

16,141 (avg. 11.4)

623 (44.2%)

46 (3.3%)

OCR Numbers

408

2,012 (avg. 4.9)

287 (70.3%)

8 (2.0%)

Say

621

2,660 (avg. 4.3)

424 (68.3%)

13 (2.1%)

Zipper

293

979 (avg. 3.3)

134 (45.7%)

1 (0.3%)

Grep

468

3,627 (avg. 7.8)

223 (47.6%)

7 (1.5%)

Food Chain

1,017

3,153 (avg. 3.1)

852 (83.8%)

55 (5.4%)

Pascal's Triangle

385

1,178 (avg. 3.1)

283 (73.5%)

10 (2.6%)

Queen Attack

652

2,029 (avg. 3.1)

499 (76.5%)

24 (3.7%)

Yacht

161

1,727 (avg. 10.7)

91 (56.5%)

9 (5.6%)

Book Store

608

4,471 (avg. 7.4)

211 (34.7%)

12 (2.0%)

Connect

366

1,693 (avg. 4.6)

164 (44.8%)

7 (1.9%)

Microwave

2,274

17,329 (avg. 7.6)

1,091 (48.0%)

75 (3.3%)

Darts

1,050

3,769 (avg. 3.6)

798 (76.0%)

34 (3.2%)

Bank Account

223

2,102 (avg. 9.4)

139 (62.3%)

10 (4.5%)

Gilded Rose

153

2,117 (avg. 13.8)

63 (41.2%)

5 (3.3%)

Knapsack

126

972 (avg. 7.7)

55 (43.7%)

4 (3.2%)

Zebra Puzzle

133

999 (avg. 7.5)

42 (31.6%)

1 (0.8%)

10 deprecated practice exercises

Started

Attempts

Completions

Mentoring requests

Accumulate

1,813

3,337 (avg. 1.8)

1,572 (86.7%)

172 (9.5%)

Beer Song

1,606

9,048 (avg. 5.6)

1,274 (79.3%)

176 (11.0%)

Binary

1,354

1,998 (avg. 1.5)

1,258 (92.9%)

128 (9.5%)

Hexadecimal

423

580 (avg. 1.4)

386 (91.3%)

25 (5.9%)

Minesweeper

582

3,356 (avg. 5.8)

381 (65.5%)

8 (1.4%)

Octal

23 (avg. 1.6)

11 (78.6%)

0 (0.0%)

Point Mutations

143 (avg. 2.5)

55 (96.5%)

44 (77.2%)

Scale Generator

508

1,937 (avg. 3.8)

265 (52.2%)

10 (2.0%)

Strain

1,381

2,310 (avg. 1.7)

1,175 (85.1%)

97 (7.0%)

Trinary

785

1,060 (avg. 1.4)

746 (95.0%)

49 (6.2%)

31 unimplemented practice exercises

Baffling Birthdays

View data

Conway's Game of Life

DOT DSL

Error Handling

Forth

Go Counting

Hangman

Intergalactic Transmission

Killer Sudoku Helper

Ledger

Lens Person

Markdown

Micro Blog

PaaS I/O

Piecing It Together

POV

Rational Numbers

React

Rectangles

Relative Distance

REST API

Satellite

SGF Parsing

Split-Second Stopwatch

Square Root

State of Tic-Tac-Toe

Sublist

Swift Scheduling

Tree Building

Variable Length Quantity

View data

Word Search

View data

Programming Tags

Learn More

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: 5b5e07dba9d19709b98f1a77571646b8dc41ba7c (Takes up to 10 mins to deploy)

Next goal: Get Test Runners to Version 3. Ruby is currently utilising a Version 2 Test Runner. Find out more.

Total Test Runner Runs

1,902,718

Test Run Pass Rate

20.0% (380754)

Test Run Fail Rate

67.5% (1283778)

Test Run Error Rate

12.5% (238186)

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.

Current version: 1b4442deaa15bc70b7157c04b89c0a57952e643a (Takes up to 10 mins to deploy)

Total Representer Runs

373,438

Total Representation Comments Made

60,373

Feedback Given Frequency

16.2%

Analyzer

Learn More

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

Current version: 7b4ac8d5a7222dd40f689b4a438319aa27c2154d (Takes up to 10 mins to deploy)

Total Analyzer Runs

350,795

Total Analysis Comments Made

13,429

Feedback Given Frequency

0.7%

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