Unison

766 students

766
students have developed their Unison skills on Exercism.

Students

766

Submissions

7,609

Mentoring Discussions

48

The Unison track needs attention ⚠️

Building

Build

Use your knowledge to build the Unison track itself

Build Test Runners

Create Test Runners that have the single responsibility of taking a solution, running all tests and returning a standardized output.

Usage statistics

Total Test Runner Runs

7,584

Test Run Pass Rate

30.7% (2329)

Test Run Fail Rate

14.3% (1083)

Test Run Error Rate

55.0% (4172)

Build Analyzers

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

Next goal: Build an Analyzer. Find out more.

Build Representers

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.

Create Practice Exercises

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.

Next goal: Implement at least 50 practice exercises. Find out more.

Usage statistics

40 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

646

1,034 (avg. 1.6)

569 (88.1%)

0 (0.0%)

Acronym

432

2,340 (avg. 5.4)

156 (36.1%)

19 (4.4%)

Allergies

99

268 (avg. 2.7)

62 (62.6%)

4 (4.0%)

Armstrong Numbers

148

597 (avg. 4.0)

100 (67.6%)

8 (5.4%)

Bowling

40

113 (avg. 2.8)

22 (55.0%)

1 (2.5%)

Clock

47

190 (avg. 4.0)

31 (66.0%)

1 (2.1%)

Crypto Square

28

207 (avg. 7.4)

20 (71.4%)

0 (0.0%)

Change

26

118 (avg. 4.5)

14 (53.8%)

0 (0.0%)

Collatz Conjecture

78

229 (avg. 2.9)

58 (74.4%)

5 (6.4%)

Darts

38

183 (avg. 4.8)

33 (86.8%)

0 (0.0%)

Diamond

16

43 (avg. 2.7)

13 (81.3%)

0 (0.0%)

All Your Base

23

40 (avg. 1.7)

12 (52.2%)

0 (0.0%)

Leap

68

187 (avg. 2.8)

58 (85.3%)

1 (1.5%)

Matching Brackets

31

159 (avg. 5.1)

16 (51.6%)

1 (3.2%)

Majority Element

31

157 (avg. 5.1)

16 (51.6%)

3 (9.7%)

Nucleotide Count

49

133 (avg. 2.7)

40 (81.6%)

1 (2.0%)

RNA Transcription

44

87 (avg. 2.0)

38 (86.4%)

0 (0.0%)

Rotational Cipher

10

57 (avg. 5.7)

8 (80.0%)

0 (0.0%)

Scale Generator

13

129 (avg. 9.9)

9 (69.2%)

0 (0.0%)

Sieve

21

56 (avg. 2.7)

13 (61.9%)

0 (0.0%)

Simple Linked List

21

42 (avg. 2.0)

17 (81.0%)

0 (0.0%)

Space Age

47

152 (avg. 3.2)

40 (85.1%)

0 (0.0%)

Spiral Matrix

14

27 (avg. 1.9)

9 (64.3%)

0 (0.0%)

Stream Ops

25

177 (avg. 7.1)

13 (52.0%)

2 (8.0%)

Sublist

21

43 (avg. 2.0)

16 (76.2%)

0 (0.0%)

Sum Of Multiples

31

136 (avg. 4.4)

26 (83.9%)

0 (0.0%)

Raindrops

49

169 (avg. 3.4)

45 (91.8%)

4 (8.2%)

Run Length Encoding

41

94 (avg. 2.3)

25 (61.0%)

3 (7.3%)

Queen Attack

18

42 (avg. 2.3)

13 (72.2%)

0 (0.0%)

Zebra Puzzle

15

49 (avg. 3.3)

8 (53.3%)

0 (0.0%)

Zipper

18

64 (avg. 3.6)

9 (50.0%)

0 (0.0%)

Reverse String

10

17 (avg. 1.7)

6 (60.0%)

0 (0.0%)

Protein Translation

4

5 (avg. 1.3)

2 (50.0%)

0 (0.0%)

Difference of Squares

7

7 (avg. 1.0)

3 (42.9%)

0 (0.0%)

Knapsack

3

1 (avg. 0.3)

1 (33.3%)

0 (0.0%)

Roman Numerals

23

119 (avg. 5.2)

14 (60.9%)

0 (0.0%)

Largest Series Product

4

5 (avg. 1.3)

2 (50.0%)

0 (0.0%)

ETL

4

3 (avg. 0.8)

2 (50.0%)

0 (0.0%)

Bob

10

53 (avg. 5.3)

6 (60.0%)

0 (0.0%)

Isogram

26

75 (avg. 2.9)

19 (73.1%)

2 (7.7%)

90 unimplemented practice exercises

Affine Cipher

Alphametics

Anagram

Atbash Cipher

Bank Account

Binary Search

Binary Search Tree

Book Store

Bottle Song

Circular Buffer

Complex Numbers

Connect

Custom Set

D&D Character

DOT DSL

Dominoes

Error Handling

Flatten Array

Food Chain

Forth

Gigasecond

Go Counting

Grade School

Grains

Grep

Hamming

Hangman

High Scores

House

ISBN Verifier

Killer Sudoku Helper

Kindergarten Garden

Ledger

Lens Person

Linked List

List Ops

Luhn

Markdown

Matrix

Meetup

Micro Blog

Minesweeper

Nth Prime

OCR Numbers

POV

PaaS I/O

Palindrome Products

Pangram

Parallel Letter Frequency

Pascal's Triangle

Perfect Numbers

Phone Number

Pig Latin

Poker

Prime Factors

Proverb

Pythagorean Triplet

REST API

Rail Fence Cipher

Rational Numbers

React

Rectangles

Resistor Color

Resistor Color Duo

Resistor Color Trio

Robot Name

Robot Simulator

SGF Parsing

Saddle Points

Satellite

Say

Scrabble Score

Secret Handshake

Series

Simple Cipher

Square Root

State of Tic-Tac-Toe

Strain

Tournament

Transpose

Tree Building

Triangle

Twelve Days

Two Bucket

Two-Fer

Variable Length Quantity

Word Count

Word Search

Wordy

Yacht

Volunteers

11

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1,526

ErikSchierboom

730

kytrinyx

125

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