TypeScript impact and status on Exercism

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

Students

80,210

Submissions

1,320,316

Mentoring Discussions

9,280

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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: f9a92898c62cccfe160d51eaffa23a9033adb729 (Updates should be instant)

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

100 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

57,519

82,674 (avg. 1.4)

46,127 (80.2%)

6 (0.0%)

Two Fer

35,985

124,086 (avg. 3.4)

27,367 (76.1%)

1,931 (5.4%)

Resistor Color

16,067

83,509 (avg. 5.2)

11,860 (73.8%)

505 (3.1%)

Resistor Color Duo

21,748

163,604 (avg. 7.5)

14,753 (67.8%)

1,393 (6.4%)

Resistor Color Trio

11,601

120,376 (avg. 10.4)

7,528 (64.9%)

469 (4.0%)

Leap

13,825

46,755 (avg. 3.4)

11,434 (82.7%)

1,448 (10.5%)

RNA Transcription

9,804

64,595 (avg. 6.6)

7,927 (80.9%)

700 (7.1%)

Space Age

8,009

53,143 (avg. 6.6)

6,314 (78.8%)

382 (4.8%)

D&D Character

5,720

44,119 (avg. 7.7)

3,730 (65.2%)

160 (2.8%)

Darts

2,812

9,974 (avg. 3.5)

2,162 (76.9%)

50 (1.8%)

Pangram

6,245

28,026 (avg. 4.5)

5,038 (80.7%)

279 (4.5%)

Bob

5,736

49,306 (avg. 8.6)

3,979 (69.4%)

274 (4.8%)

Matrix

5,254

36,202 (avg. 6.9)

3,328 (63.3%)

220 (4.2%)

Robot Name

4,702

34,637 (avg. 7.4)

2,630 (55.9%)

200 (4.3%)

Grade School

3,142

36,357 (avg. 11.6)

1,960 (62.4%)

131 (4.2%)

Clock

2,426

21,116 (avg. 8.7)

1,611 (66.4%)

83 (3.4%)

Secret Handshake

1,892

9,356 (avg. 4.9)

1,447 (76.5%)

64 (3.4%)

Binary Search

2,114

11,933 (avg. 5.6)

1,545 (73.1%)

44 (2.1%)

Linked List

2,019

16,298 (avg. 8.1)

1,246 (61.7%)

76 (3.8%)

Rational Numbers

1,066

9,624 (avg. 9.0)

712 (66.8%)

27 (2.5%)

Atbash Cipher

1,148

8,850 (avg. 7.7)

922 (80.3%)

34 (3.0%)

Simple Cipher

1,565

6,470 (avg. 4.1)

877 (56.0%)

158 (10.1%)

Wordy

1,106

12,827 (avg. 11.6)

622 (56.2%)

25 (2.3%)

List Ops

1,299

10,810 (avg. 8.3)

506 (39.0%)

37 (2.8%)

Word Count

3,157

18,390 (avg. 5.8)

2,073 (65.7%)

96 (3.0%)

Difference of Squares

2,398

7,024 (avg. 2.9)

1,899 (79.2%)

77 (3.2%)

Gigasecond

2,585

6,077 (avg. 2.4)

1,859 (71.9%)

81 (3.1%)

Square Root

53 (avg. 1.8)

25 (83.3%)

0 (0.0%)

Reverse String

2,837

5,866 (avg. 2.1)

2,439 (86.0%)

49 (1.7%)

Triangle

1,736

10,062 (avg. 5.8)

1,306 (75.2%)

40 (2.3%)

Collatz Conjecture

1,144

3,733 (avg. 3.3)

918 (80.2%)

19 (1.7%)

ETL

1,232

5,529 (avg. 4.5)

958 (77.8%)

18 (1.5%)

Protein Translation

1,261

8,499 (avg. 6.7)

973 (77.2%)

29 (2.3%)

Raindrops

1,407

4,459 (avg. 3.2)

1,208 (85.9%)

16 (1.1%)

Hamming

1,243

3,188 (avg. 2.6)

1,058 (85.1%)

13 (1.0%)

Nucleotide Count

950

3,752 (avg. 3.9)

723 (76.1%)

14 (1.5%)

Scrabble Score

1,086

4,862 (avg. 4.5)

852 (78.5%)

23 (2.1%)

Allergies

843

4,814 (avg. 5.7)

572 (67.9%)

14 (1.7%)

Perfect Numbers

954

3,732 (avg. 3.9)

769 (80.6%)

16 (1.7%)

Complex Numbers

576

2,351 (avg. 4.1)

372 (64.6%)

3 (0.5%)

Luhn

870

5,029 (avg. 5.8)

653 (75.1%)

17 (2.0%)

Grains

639

2,968 (avg. 4.6)

480 (75.1%)

8 (1.3%)

Pythagorean Triplet

598

2,416 (avg. 4.0)

328 (54.8%)

5 (0.8%)

Relative Distance

122 (avg. 7.6)

5 (31.3%)

0 (0.0%)

Sum of Multiples

642

2,879 (avg. 4.5)

466 (72.6%)

8 (1.2%)

Acronym

1,116

8,524 (avg. 7.6)

822 (73.7%)

13 (1.2%)

Anagram

1,065

5,907 (avg. 5.5)

831 (78.0%)

12 (1.1%)

Isogram

1,098

4,528 (avg. 4.1)

882 (80.3%)

8 (0.7%)

Roman Numerals

901

3,528 (avg. 3.9)

652 (72.4%)

9 (1.0%)

Series

843

4,740 (avg. 5.6)

632 (75.0%)

11 (1.3%)

Phone Number

760

5,467 (avg. 7.2)

526 (69.2%)

3 (0.4%)

Two Bucket

444

1,788 (avg. 4.0)

192 (43.2%)

3 (0.7%)

Variable Length Quantity

327

1,490 (avg. 4.6)

170 (52.0%)

1 (0.3%)

Largest Series Product

435

1,933 (avg. 4.4)

304 (69.9%)

13 (3.0%)

Food Chain

371

1,741 (avg. 4.7)

227 (61.2%)

0 (0.0%)

House

354

1,542 (avg. 4.4)

202 (57.1%)

3 (0.8%)

ISBN Verifier

477

1,972 (avg. 4.1)

338 (70.9%)

8 (1.7%)

Pig Latin

383

1,781 (avg. 4.7)

233 (60.8%)

6 (1.6%)

Proverb

331

857 (avg. 2.6)

242 (73.1%)

1 (0.3%)

Twelve Days

383

1,563 (avg. 4.1)

244 (63.7%)

3 (0.8%)

Beer Song

484

4,979 (avg. 10.3)

282 (58.3%)

1 (0.2%)

Say

332

1,826 (avg. 5.5)

197 (59.3%)

0 (0.0%)

Rectangles

262

842 (avg. 3.2)

123 (46.9%)

0 (0.0%)

Saddle Points

309

1,032 (avg. 3.3)

188 (60.8%)

5 (1.6%)

Spiral Matrix

301

1,038 (avg. 3.4)

178 (59.1%)

3 (1.0%)

Transpose

354

2,613 (avg. 7.4)

198 (55.9%)

1 (0.3%)

OCR Numbers

248

1,393 (avg. 5.6)

138 (55.6%)

3 (1.2%)

Nth Prime

401

1,344 (avg. 3.4)

281 (70.1%)

4 (1.0%)

Alphametics

252

1,138 (avg. 4.5)

85 (33.7%)

1 (0.4%)

Connect

200

685 (avg. 3.4)

89 (44.5%)

2 (1.0%)

Bowling

531

5,012 (avg. 9.4)

176 (33.1%)

8 (1.5%)

Prime Factors

379

925 (avg. 2.4)

276 (72.8%)

12 (3.2%)

Diamond

274

1,199 (avg. 4.4)

156 (56.9%)

0 (0.0%)

Pascal's Triangle

308

973 (avg. 3.2)

194 (63.0%)

5 (1.6%)

Binary Search Tree

407

1,907 (avg. 4.7)

244 (60.0%)

4 (1.0%)

Sublist

311

1,764 (avg. 5.7)

182 (58.5%)

2 (0.6%)

Custom Set

318

1,807 (avg. 5.7)

176 (55.3%)

0 (0.0%)

Circular Buffer

535

2,270 (avg. 4.2)

319 (59.6%)

7 (1.3%)

Word Search

472

2,208 (avg. 4.7)

162 (34.3%)

7 (1.5%)

Sieve

266

677 (avg. 2.5)

183 (68.8%)

2 (0.8%)

Palindrome Products

272

2,025 (avg. 7.4)

120 (44.1%)

4 (1.5%)

Diffie-Hellman

707

2,351 (avg. 3.3)

476 (67.3%)

6 (0.8%)

Robot Simulator

587

3,809 (avg. 6.5)

370 (63.0%)

7 (1.2%)

Armstrong Numbers

1,393

5,743 (avg. 4.1)

1,039 (74.6%)

27 (1.9%)

Run-Length Encoding

1,148

5,318 (avg. 4.6)

748 (65.2%)

22 (1.9%)

Bank Account

305

1,707 (avg. 5.6)

212 (69.5%)

1 (0.3%)

Eliud's Eggs

237

617 (avg. 2.6)

189 (79.7%)

3 (1.3%)

Rotational Cipher

442

799 (avg. 1.8)

287 (64.9%)

9 (2.0%)

Strain

626

1,413 (avg. 2.3)

427 (68.2%)

16 (2.6%)

All Your Base

440

1,649 (avg. 3.7)

243 (55.2%)

5 (1.1%)

Flatten Array

749

3,233 (avg. 4.3)

479 (64.0%)

14 (1.9%)

Matching Brackets

625

2,653 (avg. 4.2)

383 (61.3%)

16 (2.6%)

Tournament

249

2,211 (avg. 8.9)

135 (54.2%)

2 (0.8%)

Minesweeper

495

2,122 (avg. 4.3)

263 (53.1%)

8 (1.6%)

Kindergarten Garden

294

1,211 (avg. 4.1)

174 (59.2%)

1 (0.3%)

Queen Attack

700

3,093 (avg. 4.4)

392 (56.0%)

23 (3.3%)

React

900

1,708 (avg. 1.9)

82 (9.1%)

1 (0.1%)

Crypto Square

420

1,579 (avg. 3.8)

222 (52.9%)

7 (1.7%)

Knapsack

499

2,668 (avg. 5.3)

174 (34.9%)

5 (1.0%)

Conway's Game of Life

59 (avg. 2.6)

12 (52.2%)

0 (0.0%)

1 deprecated practice exercises

Started

Attempts

Completions

Mentoring requests

Accumulate

386

884 (avg. 2.3)

266 (68.9%)

11 (2.8%)

37 unimplemented practice exercises

Affine Cipher

Baffling Birthdays

Book Store

Bottle Song

Change

Dominoes

DOT DSL

Error Handling

Forth

Go Counting

Grep

Hangman

High Scores

Intergalactic Transmission

Killer Sudoku Helper

Ledger

Lens Person

Markdown

Meetup

Micro Blog

PaaS I/O

Parallel Letter Frequency

Piecing It Together

Poker

POV

Rail Fence Cipher

REST API

Satellite

SGF Parsing

Simple Linked List

Split-Second Stopwatch

State of Tic-Tac-Toe

Swift Scheduling

Tree Building

Yacht

Zebra Puzzle

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: 078ce57d389542e5c9f84ce27fa06904d38a5af2 (Takes up to 10 mins to deploy)

Total Test Runner Runs

1,288,586

Test Run Pass Rate

19.4% (249636)

Test Run Fail Rate

41.0% (528003)

Test Run Error Rate

39.7% (510947)

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: 970e41d244fe29d25e5836d1d504bae5d87ebf28 (Takes up to 10 mins to deploy)

Total Representer Runs

237,259

Total Representation Comments Made

54,661

Feedback Given Frequency

23.0%

Analyzer

Learn More

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

Current version: 8cda5a222e955b9ac0c1fc2150364a3ed0252515 (Takes up to 10 mins to deploy)

Total Analyzer Runs

236,591

Total Analysis Comments Made

11,358

Feedback Given Frequency

0.8%

Volunteers

522

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6,699

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6,162

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5,697

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