Racket impact and status on Exercism

Racket

3,596 students

About Racket

Practice

57 contributors

90 mentors

Racket Track Management

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

Students

3,596

Submissions

31,174

Mentoring Discussions

670

The Racket track needs attention ⚠️

Building

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: a6e636e493ba9adfb160cc322107f00225c77568 (Updates should be instant)

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

80 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

2,669

4,009 (avg. 1.5)

2,213 (82.9%)

3 (0.1%)

Acronym

430

1,195 (avg. 2.8)

186 (43.3%)

8 (1.9%)

Armstrong Numbers

267

725 (avg. 2.7)

193 (72.3%)

9 (3.4%)

Atbash Cipher

113

425 (avg. 3.8)

71 (62.8%)

5 (4.4%)

Binary Search

232 (avg. 3.2)

47 (65.3%)

5 (6.9%)

Bob

323

1,469 (avg. 4.5)

243 (75.2%)

28 (8.7%)

Clock

165 (avg. 2.9)

30 (53.6%)

2 (3.6%)

Collatz Conjecture

304

1,153 (avg. 3.8)

248 (81.6%)

27 (8.9%)

D&D Character

299 (avg. 3.4)

54 (62.1%)

1 (1.1%)

Darts

142 (avg. 2.1)

52 (77.6%)

3 (4.5%)

Difference of Squares

590

1,485 (avg. 2.5)

511 (86.6%)

56 (9.5%)

ETL

145

332 (avg. 2.3)

110 (75.9%)

5 (3.4%)

Eliud's Eggs

178 (avg. 2.0)

79 (90.8%)

0 (0.0%)

Gigasecond

339

532 (avg. 1.6)

286 (84.4%)

32 (9.4%)

Grains

1,267

3,957 (avg. 3.1)

773 (61.0%)

148 (11.7%)

Grep

107

282 (avg. 2.6)

62 (57.9%)

4 (3.7%)

Hamming

285

644 (avg. 2.3)

237 (83.2%)

24 (8.4%)

High Scores

68 (avg. 2.1)

20 (60.6%)

0 (0.0%)

Isogram

147

448 (avg. 3.0)

116 (78.9%)

6 (4.1%)

Leap

696

1,577 (avg. 2.3)

616 (88.5%)

76 (10.9%)

List Ops

148

514 (avg. 3.5)

91 (61.5%)

7 (4.7%)

Nth Prime

86 (avg. 4.8)

15 (83.3%)

1 (5.6%)

Nucleotide Count

141

355 (avg. 2.5)

117 (83.0%)

5 (3.5%)

Pangram

76 (avg. 2.1)

29 (80.6%)

0 (0.0%)

Protein Translation

81 (avg. 2.5)

23 (69.7%)

0 (0.0%)

Proverb

73 (avg. 2.7)

20 (74.1%)

1 (3.7%)

Queen Attack

46 (avg. 2.4)

14 (73.7%)

0 (0.0%)

RNA Transcription

164

240 (avg. 1.5)

146 (89.0%)

6 (3.7%)

Raindrops

146

354 (avg. 2.4)

126 (86.3%)

9 (6.2%)

Resistor Color

85 (avg. 2.6)

28 (84.8%)

2 (6.1%)

Resistor Color Duo

65 (avg. 2.4)

22 (81.5%)

1 (3.7%)

Resistor Color Trio

191 (avg. 6.6)

23 (79.3%)

2 (6.9%)

Reverse String

327

407 (avg. 1.2)

248 (75.8%)

4 (1.2%)

Roman Numerals

150

280 (avg. 1.9)

119 (79.3%)

6 (4.0%)

Scrabble Score

225

505 (avg. 2.2)

192 (85.3%)

22 (9.8%)

Sieve

61 (avg. 2.3)

20 (76.9%)

0 (0.0%)

Space Age

31 (avg. 1.1)

20 (69.0%)

0 (0.0%)

Square Root

56 (avg. 1.6)

23 (63.9%)

1 (2.8%)

Strain

46 (avg. 1.5)

22 (73.3%)

1 (3.3%)

Triangle

182 (avg. 3.6)

36 (72.0%)

0 (0.0%)

Two Fer

672

2,199 (avg. 3.3)

508 (75.6%)

97 (14.4%)

Affine Cipher

405 (avg. 4.4)

53 (57.6%)

3 (3.3%)

All Your Base

234

516 (avg. 2.2)

119 (50.9%)

3 (1.3%)

Allergies

142 (avg. 1.5)

75 (77.3%)

0 (0.0%)

Alphametics

245 (avg. 7.2)

10 (29.4%)

4 (11.8%)

Anagram

152

300 (avg. 2.0)

128 (84.2%)

10 (6.6%)

Circular Buffer

23 (avg. 1.0)

7 (31.8%)

0 (0.0%)

Diamond

23 (avg. 1.8)

7 (53.8%)

0 (0.0%)

Food Chain

69 (avg. 6.9)

4 (40.0%)

0 (0.0%)

Grade School

25 (avg. 1.8)

7 (50.0%)

0 (0.0%)

House

67 (avg. 2.6)

15 (57.7%)

0 (0.0%)

Kindergarten Garden

22 (avg. 2.2)

4 (40.0%)

1 (10.0%)

Knapsack

31 (avg. 2.1)

9 (60.0%)

1 (6.7%)

Largest Series Product

20 (avg. 1.4)

7 (50.0%)

1 (7.1%)

Matching Brackets

143

737 (avg. 5.2)

111 (77.6%)

2 (1.4%)

Meetup

166 (avg. 1.8)

49 (52.7%)

5 (5.4%)

Pascal's Triangle

29 (avg. 1.9)

8 (53.3%)

0 (0.0%)

Perfect Numbers

388

1,134 (avg. 2.9)

329 (84.8%)

40 (10.3%)

Phone Number

112

215 (avg. 1.9)

85 (75.9%)

1 (0.9%)

Pig Latin

10 (avg. 1.3)

3 (37.5%)

0 (0.0%)

Robot Name

171

474 (avg. 2.8)

108 (63.2%)

3 (1.8%)

Robot Simulator

18 (avg. 1.6)

5 (45.5%)

0 (0.0%)

Rotational Cipher

33 (avg. 1.7)

12 (60.0%)

0 (0.0%)

Run-Length Encoding

32 (avg. 2.9)

6 (54.5%)

0 (0.0%)

Say

160 (avg. 2.4)

42 (63.6%)

0 (0.0%)

Secret Handshake

7 (avg. 0.8)

4 (44.4%)

0 (0.0%)

Spiral Matrix

25 (avg. 2.3)

3 (27.3%)

0 (0.0%)

Sublist

89 (avg. 2.6)

19 (55.9%)

3 (8.8%)

Twelve Days

196 (avg. 3.7)

34 (64.2%)

2 (3.8%)

Two Bucket

27 (avg. 2.7)

4 (40.0%)

0 (0.0%)

Word Count

132

263 (avg. 2.0)

103 (78.0%)

4 (3.0%)

Yacht

41 (avg. 3.4)

6 (50.0%)

0 (0.0%)

Zebra Puzzle

15 (avg. 1.3)

3 (25.0%)

0 (0.0%)

Bank Account

35 (avg. 2.5)

3 (21.4%)

0 (0.0%)

Luhn

30 (avg. 1.8)

8 (47.1%)

0 (0.0%)

Minesweeper

29 (avg. 2.1)

5 (35.7%)

0 (0.0%)

Parallel Letter Frequency

76 (avg. 5.8)

7 (53.8%)

0 (0.0%)

Variable Length Quantity

171 (avg. 3.1)

23 (41.1%)

2 (3.6%)

Bowling

4 (avg. 0.8)

3 (60.0%)

0 (0.0%)

Pythagorean Triplet

14 (avg. 1.6)

5 (55.6%)

0 (0.0%)

1 deprecated practice exercises

Started

Attempts

Completions

Mentoring requests

Accumulate

6 (avg. 1.2)

3 (60.0%)

1 (20.0%)

57 unimplemented practice exercises

Baffling Birthdays

Binary Search Tree

Book Store

Bottle Song

Change

Complex Numbers

Connect

Conway's Game of Life

Crypto Square

Custom Set

Dominoes

DOT DSL

Error Handling

Flatten Array

Flower Field

Forth

Go Counting

Hangman

Intergalactic Transmission

ISBN Verifier

Killer Sudoku Helper

Ledger

Lens Person

Linked List

Markdown

Matrix

Micro Blog

OCR Numbers

PaaS I/O

Palindrome Products

Piecing It Together

Poker

POV

Prime Factors

Pythagorean Triplet

Rail Fence Cipher

Rational Numbers

React

Rectangles

Relative Distance

REST API

Saddle Points

Satellite

Series

SGF Parsing

Simple Cipher

Simple Linked List

Split-Second Stopwatch

State of Tic-Tac-Toe

Sum of Multiples

Swift Scheduling

Tournament

Transpose

Tree Building

Word Search

Wordy

Zipper

Programming Tags

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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: 9edc0750a47adab0e67b3919c64dcf60ab6a40bf (Takes up to 10 mins to deploy)

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

Total Test Runner Runs

29,601

Test Run Pass Rate

39.4% (11653)

Test Run Fail Rate

57.6% (17046)

Test Run Error Rate

3.0% (902)

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 Racket: 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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