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

79,417

Submissions

1,306,817

Mentoring Discussions

9,240

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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 136 practice exercises. Find out more.

100 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

56,771

81,634 (avg. 1.4)

45,620 (80.4%)

6 (0.0%)

Two Fer

35,592

122,913 (avg. 3.5)

27,073 (76.1%)

1,920 (5.4%)

Resistor Color

15,779

82,030 (avg. 5.2)

11,652 (73.8%)

500 (3.2%)

Resistor Color Duo

21,575

162,464 (avg. 7.5)

14,618 (67.8%)

1,390 (6.4%)

Resistor Color Trio

11,465

119,003 (avg. 10.4)

7,434 (64.8%)

462 (4.0%)

Leap

13,716

46,297 (avg. 3.4)

11,334 (82.6%)

1,448 (10.6%)

RNA Transcription

9,705

63,922 (avg. 6.6)

7,841 (80.8%)

697 (7.2%)

Space Age

7,924

52,497 (avg. 6.6)

6,235 (78.7%)

382 (4.8%)

D&D Character

5,640

43,525 (avg. 7.7)

3,663 (64.9%)

158 (2.8%)

Darts

2,737

9,755 (avg. 3.6)

2,104 (76.9%)

50 (1.8%)

Pangram

6,170

27,698 (avg. 4.5)

4,970 (80.6%)

279 (4.5%)

Bob

5,677

48,888 (avg. 8.6)

3,930 (69.2%)

274 (4.8%)

Matrix

5,199

36,019 (avg. 6.9)

3,296 (63.4%)

219 (4.2%)

Robot Name

4,657

34,408 (avg. 7.4)

2,607 (56.0%)

199 (4.3%)

Grade School

3,111

36,111 (avg. 11.6)

1,938 (62.3%)

131 (4.2%)

Clock

2,401

20,940 (avg. 8.7)

1,594 (66.4%)

83 (3.5%)

Secret Handshake

1,875

9,311 (avg. 5.0)

1,430 (76.3%)

64 (3.4%)

Binary Search

2,095

11,806 (avg. 5.6)

1,529 (73.0%)

44 (2.1%)

Linked List

1,995

16,111 (avg. 8.1)

1,232 (61.8%)

76 (3.8%)

Rational Numbers

1,049

9,484 (avg. 9.0)

697 (66.4%)

27 (2.6%)

Atbash Cipher

1,135

8,760 (avg. 7.7)

910 (80.2%)

33 (2.9%)

Simple Cipher

1,551

6,410 (avg. 4.1)

866 (55.8%)

158 (10.2%)

Wordy

1,089

12,662 (avg. 11.6)

611 (56.1%)

25 (2.3%)

List Ops

1,283

10,595 (avg. 8.3)

500 (39.0%)

37 (2.9%)

Word Count

3,133

18,234 (avg. 5.8)

2,060 (65.8%)

95 (3.0%)

Difference of Squares

2,383

6,993 (avg. 2.9)

1,889 (79.3%)

77 (3.2%)

Gigasecond

2,573

6,014 (avg. 2.3)

1,847 (71.8%)

81 (3.1%)

Square Root

33 (avg. 1.7)

16 (80.0%)

0 (0.0%)

Reverse String

2,817

5,828 (avg. 2.1)

2,421 (85.9%)

49 (1.7%)

Triangle

1,723

10,020 (avg. 5.8)

1,294 (75.1%)

40 (2.3%)

Collatz Conjecture

1,139

3,715 (avg. 3.3)

914 (80.2%)

19 (1.7%)

ETL

1,222

5,507 (avg. 4.5)

950 (77.7%)

18 (1.5%)

Protein Translation

1,253

8,479 (avg. 6.8)

967 (77.2%)

29 (2.3%)

Raindrops

1,396

4,437 (avg. 3.2)

1,199 (85.9%)

16 (1.1%)

Hamming

1,234

3,173 (avg. 2.6)

1,051 (85.2%)

13 (1.1%)

Nucleotide Count

944

3,726 (avg. 3.9)

719 (76.2%)

14 (1.5%)

Scrabble Score

1,083

4,855 (avg. 4.5)

850 (78.5%)

23 (2.1%)

Allergies

839

4,805 (avg. 5.7)

570 (67.9%)

14 (1.7%)

Perfect Numbers

943

3,659 (avg. 3.9)

762 (80.8%)

15 (1.6%)

Complex Numbers

572

2,304 (avg. 4.0)

370 (64.7%)

3 (0.5%)

Luhn

865

5,018 (avg. 5.8)

649 (75.0%)

17 (2.0%)

Grains

634

2,927 (avg. 4.6)

477 (75.2%)

8 (1.3%)

Pythagorean Triplet

595

2,391 (avg. 4.0)

326 (54.8%)

5 (0.8%)

Relative Distance

19 (avg. 1.6)

3 (25.0%)

0 (0.0%)

Sum of Multiples

638

2,854 (avg. 4.5)

463 (72.6%)

8 (1.3%)

Acronym

1,108

8,478 (avg. 7.7)

818 (73.8%)

13 (1.2%)

Anagram

1,056

5,857 (avg. 5.5)

824 (78.0%)

12 (1.1%)

Isogram

1,088

4,496 (avg. 4.1)

876 (80.5%)

8 (0.7%)

Roman Numerals

893

3,503 (avg. 3.9)

646 (72.3%)

9 (1.0%)

Series

836

4,703 (avg. 5.6)

626 (74.9%)

11 (1.3%)

Phone Number

753

5,425 (avg. 7.2)

523 (69.5%)

3 (0.4%)

Two Bucket

440

1,741 (avg. 4.0)

189 (43.0%)

2 (0.5%)

Variable Length Quantity

325

1,375 (avg. 4.2)

168 (51.7%)

1 (0.3%)

Largest Series Product

430

1,915 (avg. 4.5)

302 (70.2%)

13 (3.0%)

Food Chain

370

1,730 (avg. 4.7)

226 (61.1%)

0 (0.0%)

House

353

1,538 (avg. 4.4)

201 (56.9%)

3 (0.8%)

ISBN Verifier

473

1,938 (avg. 4.1)

335 (70.8%)

8 (1.7%)

Pig Latin

382

1,764 (avg. 4.6)

232 (60.7%)

6 (1.6%)

Proverb

329

843 (avg. 2.6)

240 (72.9%)

1 (0.3%)

Twelve Days

380

1,520 (avg. 4.0)

243 (63.9%)

3 (0.8%)

Beer Song

483

4,979 (avg. 10.3)

282 (58.4%)

1 (0.2%)

Say

331

1,784 (avg. 5.4)

196 (59.2%)

0 (0.0%)

Rectangles

261

841 (avg. 3.2)

122 (46.7%)

0 (0.0%)

Saddle Points

307

972 (avg. 3.2)

186 (60.6%)

5 (1.6%)

Spiral Matrix

300

1,026 (avg. 3.4)

177 (59.0%)

3 (1.0%)

Transpose

352

2,581 (avg. 7.3)

195 (55.4%)

1 (0.3%)

OCR Numbers

246

1,382 (avg. 5.6)

136 (55.3%)

3 (1.2%)

Nth Prime

399

1,335 (avg. 3.3)

279 (69.9%)

3 (0.8%)

Alphametics

251

1,122 (avg. 4.5)

84 (33.5%)

1 (0.4%)

Connect

199

683 (avg. 3.4)

88 (44.2%)

2 (1.0%)

Bowling

526

4,935 (avg. 9.4)

174 (33.1%)

8 (1.5%)

Prime Factors

378

922 (avg. 2.4)

275 (72.8%)

12 (3.2%)

Diamond

273

1,188 (avg. 4.4)

155 (56.8%)

0 (0.0%)

Pascal's Triangle

307

968 (avg. 3.2)

193 (62.9%)

5 (1.6%)

Binary Search Tree

404

1,860 (avg. 4.6)

242 (59.9%)

4 (1.0%)

Sublist

310

1,761 (avg. 5.7)

181 (58.4%)

2 (0.6%)

Custom Set

317

1,796 (avg. 5.7)

175 (55.2%)

0 (0.0%)

Circular Buffer

532

2,222 (avg. 4.2)

316 (59.4%)

7 (1.3%)

Word Search

468

2,171 (avg. 4.6)

161 (34.4%)

7 (1.5%)

Sieve

265

675 (avg. 2.5)

182 (68.7%)

2 (0.8%)

Palindrome Products

271

1,980 (avg. 7.3)

118 (43.5%)

4 (1.5%)

Diffie-Hellman

702

2,346 (avg. 3.3)

475 (67.7%)

6 (0.9%)

Robot Simulator

586

3,798 (avg. 6.5)

369 (63.0%)

7 (1.2%)

Armstrong Numbers

1,389

5,724 (avg. 4.1)

1,034 (74.4%)

27 (1.9%)

Run-Length Encoding

1,147

5,312 (avg. 4.6)

747 (65.1%)

22 (1.9%)

Bank Account

301

1,686 (avg. 5.6)

209 (69.4%)

1 (0.3%)

Eliud's Eggs

234

610 (avg. 2.6)

188 (80.3%)

3 (1.3%)

Rotational Cipher

442

799 (avg. 1.8)

287 (64.9%)

9 (2.0%)

Strain

623

1,410 (avg. 2.3)

426 (68.4%)

16 (2.6%)

All Your Base

439

1,646 (avg. 3.7)

242 (55.1%)

5 (1.1%)

Flatten Array

747

3,218 (avg. 4.3)

478 (64.0%)

14 (1.9%)

Matching Brackets

624

2,645 (avg. 4.2)

382 (61.2%)

16 (2.6%)

Tournament

248

2,208 (avg. 8.9)

134 (54.0%)

2 (0.8%)

Minesweeper

494

2,122 (avg. 4.3)

263 (53.2%)

8 (1.6%)

Kindergarten Garden

293

1,210 (avg. 4.1)

174 (59.4%)

1 (0.3%)

Queen Attack

696

3,033 (avg. 4.4)

390 (56.0%)

23 (3.3%)

React

892

1,678 (avg. 1.9)

81 (9.1%)

1 (0.1%)

Crypto Square

414

1,518 (avg. 3.7)

218 (52.7%)

7 (1.7%)

Knapsack

496

2,652 (avg. 5.3)

172 (34.7%)

5 (1.0%)

Conway's Game of Life

56 (avg. 3.1)

10 (55.6%)

0 (0.0%)

1 deprecated practice exercises

Started

Attempts

Completions

Mentoring requests

Accumulate

386

884 (avg. 2.3)

266 (68.9%)

11 (2.8%)

36 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

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

1,275,233

Test Run Pass Rate

19.3% (246628)

Test Run Fail Rate

41.0% (522832)

Test Run Error Rate

39.7% (505773)

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

234,676

Total Representation Comments Made

53,972

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

234,011

Total Analysis Comments Made

11,357

Feedback Given Frequency

0.8%

Volunteers

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6,699

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6,162

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5,697

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