Scheme impact and status on Exercism

Scheme

4,436 students

About Scheme

Practice

32 contributors

90 mentors

Scheme Track Management

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

Students

4,436

Submissions

31,366

Mentoring Discussions

412

The Scheme 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: 50573899400ea7def9119c4acd91655e66c2c447 (Updates should be instant)

Next goal: Implement at least 40 practice exercises. Find out more.

39 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

3,132

5,109 (avg. 1.6)

2,235 (71.4%)

3 (0.1%)

Leap

1,488

5,476 (avg. 3.7)

852 (57.3%)

125 (8.4%)

RNA Transcription

809

4,612 (avg. 5.7)

477 (59.0%)

56 (6.9%)

Hamming

556

1,981 (avg. 3.6)

380 (68.3%)

67 (12.1%)

Grains

435

2,268 (avg. 5.2)

325 (74.7%)

35 (8.0%)

Anagram

231

872 (avg. 3.8)

159 (68.8%)

17 (7.4%)

Difference of Squares

322

922 (avg. 2.9)

262 (81.4%)

21 (6.5%)

Pascal's Triangle

156

444 (avg. 2.8)

105 (67.3%)

14 (9.0%)

Knapsack

309 (avg. 3.3)

41 (43.2%)

6 (6.3%)

Binary Search

169

584 (avg. 3.5)

96 (56.8%)

5 (3.0%)

Two Fer

261

629 (avg. 2.4)

202 (77.4%)

12 (4.6%)

Transpose

111

184 (avg. 1.7)

64 (57.7%)

3 (2.7%)

Forth

440 (avg. 5.6)

35 (44.9%)

2 (2.6%)

Phone Number

248 (avg. 2.6)

65 (69.1%)

3 (3.2%)

Raindrops

135

241 (avg. 1.8)

115 (85.2%)

9 (6.7%)

Matching Brackets

469 (avg. 4.9)

68 (70.8%)

3 (3.1%)

Perfect Numbers

291 (avg. 4.5)

47 (73.4%)

2 (3.1%)

Nucleotide Count

119

321 (avg. 2.7)

84 (70.6%)

3 (2.5%)

Scrabble Score

225

1,202 (avg. 5.3)

191 (84.9%)

7 (3.1%)

Word Count

186 (avg. 2.4)

45 (57.7%)

4 (5.1%)

Pangram

291 (avg. 3.5)

62 (73.8%)

2 (2.4%)

Queen Attack

124 (avg. 1.7)

54 (76.1%)

2 (2.8%)

Atbash Cipher

158 (avg. 2.4)

46 (69.7%)

1 (1.5%)

Change

115 (avg. 2.6)

23 (51.1%)

2 (4.4%)

Collatz Conjecture

103

238 (avg. 2.3)

83 (80.6%)

2 (1.9%)

Rotational Cipher

147 (avg. 2.2)

50 (73.5%)

0 (0.0%)

Prime Factors

99 (avg. 1.6)

39 (62.9%)

1 (1.6%)

Bob

108

247 (avg. 2.3)

76 (70.4%)

8 (7.4%)

Affine Cipher

139 (avg. 2.8)

30 (60.0%)

2 (4.0%)

Accumulate

761 (avg. 8.2)

38 (40.9%)

1 (1.1%)

Armstrong Numbers

289 (avg. 3.7)

54 (68.4%)

0 (0.0%)

Acronym

253 (avg. 3.6)

45 (64.3%)

0 (0.0%)

Octal

127 (avg. 2.0)

45 (72.6%)

2 (3.2%)

Roman Numerals

123 (avg. 2.0)

38 (62.3%)

0 (0.0%)

Strain

135 (avg. 2.2)

45 (72.6%)

0 (0.0%)

Sum of Multiples

329 (avg. 4.2)

45 (57.7%)

0 (0.0%)

Triangle

432 (avg. 5.1)

57 (67.9%)

1 (1.2%)

Trinary

234 (avg. 3.0)

48 (62.3%)

2 (2.6%)

Sieve

258 (avg. 3.7)

33 (47.1%)

4 (5.7%)

2 deprecated practice exercises

Started

Attempts

Completions

Mentoring requests

List Ops

38 (avg. 1.0)

24 (64.9%)

3 (8.1%)

Robot Name

41 (avg. 1.5)

24 (85.7%)

3 (10.7%)

96 unimplemented practice exercises

All Your Base

Allergies

Alphametics

Baffling Birthdays

Bank Account

Binary Search Tree

Book Store

Bottle Song

Bowling

Circular Buffer

Clock

Complex Numbers

Connect

Conway's Game of Life

Crypto Square

Custom Set

D&D Character

Darts

Diamond

Dominoes

DOT DSL

Eliud's Eggs

Error Handling

ETL

Flatten Array

Food Chain

Gigasecond

Go Counting

Grade School

Grep

Hangman

High Scores

House

Intergalactic Transmission

ISBN Verifier

Isogram

Killer Sudoku Helper

Kindergarten Garden

Largest Series Product

Ledger

Lens Person

Linked List

Luhn

Markdown

Matrix

Meetup

Micro Blog

Minesweeper

Nth Prime

OCR Numbers

PaaS I/O

Palindrome Products

Parallel Letter Frequency

Pig Latin

Poker

POV

Protein Translation

Proverb

Pythagorean Triplet

Rail Fence Cipher

Rational Numbers

React

Rectangles

Relative Distance

Resistor Color

Resistor Color Duo

Resistor Color Trio

REST API

Reverse String

Robot Simulator

Run-Length Encoding

Saddle Points

Satellite

Say

Secret Handshake

Series

SGF Parsing

Simple Cipher

Simple Linked List

Space Age

Spiral Matrix

Split-Second Stopwatch

Square Root

State of Tic-Tac-Toe

Sublist

Swift Scheduling

Tournament

Tree Building

Twelve Days

Two Bucket

Variable Length Quantity

Word Search

Wordy

Yacht

Zebra Puzzle

Zipper

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: 86614fc4f837f61bf03a99f05f1981cc9c119a03 (Takes up to 10 mins to deploy)

Total Test Runner Runs

30,118

Test Run Pass Rate

28.7% (8649)

Test Run Fail Rate

44.2% (13311)

Test Run Error Rate

27.1% (8158)

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 Scheme: Exercism's analyzers automatically assess student's submissions and provide mentor-style commentary.

Next goal: Build an Analyzer. Find out more.

Volunteers

jitwit

1,997

guygastineau

886

ErikSchierboom

610

+ 35 more

We 💙 our volunteers

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

Become an Exercism Volunteer

Language Tracks

Coding Fundamentals

Front-end Fundamentals

Your Journey

Exercism Perks

Community Videos

Brief Introduction Series

Interviews & Stories

Discord

Forum

Getting started

Mentoring

Docs

Contributors

Donate

About Exercism

Our Impact

Insiders

Scheme Track Management

The Scheme track needs attention ⚠️

Practice Exercises

Programming Tags

Test Runner

Representer

Analyzer

We 💙 our volunteers