Wren Track Management

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

Students
404
Submissions
9,219
Mentoring Discussions
24

The Wren track needs attention ⚠️

Building

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: 82d1476a945a2015317af976424541377535e277 (Updates should be instant)

Next goal: Implement 132 practice exercises. Find out more.
80 active practice exercises
Started
Attempts
Completions
Mentoring requests
Hello World Hello World
347
472 (avg. 1.4)
286 (82.4%)
0 (0.0%)
Two Fer Two Fer
187
432 (avg. 2.3)
143 (76.5%)
2 (1.1%)
Leap Years Leap Years
108
350 (avg. 3.2)
100 (92.6%)
3 (2.8%)
Resistor Color Resistor Color
106
452 (avg. 4.3)
80 (75.5%)
1 (0.9%)
RNA Transcription RNA Transcription
66
311 (avg. 4.7)
58 (87.9%)
2 (3.0%)
High Scores High Scores
60
648 (avg. 10.8)
50 (83.3%)
2 (3.3%)
Collatz Conjecture Collatz Conjecture
47
276 (avg. 5.9)
44 (93.6%)
1 (2.1%)
Hamming Hamming
39
172 (avg. 4.4)
36 (92.3%)
2 (5.1%)
Triangle Triangle
34
257 (avg. 7.6)
31 (91.2%)
2 (5.9%)
Bank Account Bank Account
25
174 (avg. 7.0)
24 (96.0%)
0 (0.0%)
Acronym Acronym
23
191 (avg. 8.3)
20 (87.0%)
1 (4.3%)
Accumulate Accumulate
24
54 (avg. 2.3)
21 (87.5%)
0 (0.0%)
Grains Grains
26
121 (avg. 4.7)
24 (92.3%)
0 (0.0%)
Darts Darts
26
68 (avg. 2.6)
24 (92.3%)
1 (3.8%)
Difference of Squares Difference of Squares
23
104 (avg. 4.5)
22 (95.7%)
1 (4.3%)
Armstrong Numbers Armstrong Numbers
21
122 (avg. 5.8)
19 (90.5%)
1 (4.8%)
Nucleotide Count Nucleotide Count
19
64 (avg. 3.4)
16 (84.2%)
0 (0.0%)
Protein Translation Protein Translation
18
155 (avg. 8.6)
16 (88.9%)
0 (0.0%)
Raindrops Raindrops
20
68 (avg. 3.4)
17 (85.0%)
0 (0.0%)
Resistor Color Duo Resistor Color Duo
16
53 (avg. 3.3)
14 (87.5%)
0 (0.0%)
Reverse String Reverse String
25
100 (avg. 4.0)
22 (88.0%)
1 (4.0%)
Scrabble Score Scrabble Score
14
70 (avg. 5.0)
13 (92.9%)
0 (0.0%)
Space Age Space Age
13
47 (avg. 3.6)
10 (76.9%)
0 (0.0%)
Matching Brackets Matching Brackets
14
58 (avg. 4.1)
12 (85.7%)
0 (0.0%)
Pangram Pangram
7
14 (avg. 2.0)
6 (85.7%)
0 (0.0%)
Word Count Word Count
12
86 (avg. 7.2)
9 (75.0%)
0 (0.0%)
D&D Character D&D Character
66
734 (avg. 11.1)
60 (90.9%)
0 (0.0%)
Isogram Isogram
11
43 (avg. 3.9)
10 (90.9%)
0 (0.0%)
Binary Binary
18
100 (avg. 5.6)
18 (100.0%)
1 (5.6%)
Flatten Array Flatten Array
68
382 (avg. 5.6)
64 (94.1%)
0 (0.0%)
Allergies Allergies
15
45 (avg. 3.0)
13 (86.7%)
0 (0.0%)
Bob Bob
13
45 (avg. 3.5)
10 (76.9%)
1 (7.7%)
Anagram Anagram
10
51 (avg. 5.1)
7 (70.0%)
0 (0.0%)
Roman Numerals Roman Numerals
12
28 (avg. 2.3)
9 (75.0%)
0 (0.0%)
ISBN Verifier ISBN Verifier
11
33 (avg. 3.0)
9 (81.8%)
0 (0.0%)
Resistor Color Trio Resistor Color Trio
10
77 (avg. 7.7)
7 (70.0%)
0 (0.0%)
Square Root Square Root
12
36 (avg. 3.0)
9 (75.0%)
0 (0.0%)
Twelve Days Twelve Days
8
37 (avg. 4.6)
6 (75.0%)
0 (0.0%)
Beer Song Beer Song
8
38 (avg. 4.8)
5 (62.5%)
0 (0.0%)
Diamond Diamond
9
5 (avg. 0.6)
5 (55.6%)
0 (0.0%)
Luhn Luhn
9
24 (avg. 2.7)
5 (55.6%)
0 (0.0%)
Clock Clock
8
50 (avg. 6.3)
5 (62.5%)
0 (0.0%)
Pig Latin Pig Latin
4
17 (avg. 4.3)
2 (50.0%)
0 (0.0%)
Pythagorean Triplet Pythagorean Triplet
4
3 (avg. 0.8)
3 (75.0%)
0 (0.0%)
Sieve Sieve
6
7 (avg. 1.2)
3 (50.0%)
0 (0.0%)
Rotational Cipher Rotational Cipher
4
3 (avg. 0.8)
3 (75.0%)
0 (0.0%)
Perfect Numbers Perfect Numbers
4
10 (avg. 2.5)
4 (100.0%)
0 (0.0%)
Custom Set Custom Set
11
50 (avg. 4.5)
6 (54.5%)
1 (9.1%)
Run Length Encoding Run Length Encoding
54
525 (avg. 9.7)
49 (90.7%)
0 (0.0%)
Bottle Song Bottle Song
3
2 (avg. 0.7)
2 (66.7%)
0 (0.0%)
Atbash Cipher Atbash Cipher
6
8 (avg. 1.3)
4 (66.7%)
0 (0.0%)
Nth Prime Nth Prime
4
4 (avg. 1.0)
3 (75.0%)
0 (0.0%)
Robot Simulator Robot Simulator
9
22 (avg. 2.4)
7 (77.8%)
0 (0.0%)
Crypto Square Crypto Square
3
3 (avg. 1.0)
2 (66.7%)
0 (0.0%)
Spiral Matrix Spiral Matrix
3
17 (avg. 5.7)
2 (66.7%)
0 (0.0%)
Pascals Triangle Pascals Triangle
4
5 (avg. 1.3)
3 (75.0%)
0 (0.0%)
Queen Attack Queen Attack
56
944 (avg. 16.9)
50 (89.3%)
0 (0.0%)
Affine Cipher Affine Cipher
4
33 (avg. 8.3)
1 (25.0%)
0 (0.0%)
Robot Name Robot Name
6
3 (avg. 0.5)
3 (50.0%)
0 (0.0%)
Simple Linked List Simple Linked List
8
15 (avg. 1.9)
4 (50.0%)
0 (0.0%)
Grade School Grade School
3
2 (avg. 0.7)
1 (33.3%)
0 (0.0%)
Killer Sudoku Helper Killer Sudoku Helper
4
4 (avg. 1.0)
3 (75.0%)
0 (0.0%)
Circular Buffer Circular Buffer
8
43 (avg. 5.4)
6 (75.0%)
0 (0.0%)
Binary Search Tree Binary Search Tree
5
3 (avg. 0.6)
2 (40.0%)
0 (0.0%)
Simple Cipher Simple Cipher
3
13 (avg. 4.3)
2 (66.7%)
0 (0.0%)
Wordy Wordy
4
10 (avg. 2.5)
1 (25.0%)
0 (0.0%)
Kindergarten Garden Kindergarten Garden
3
8 (avg. 2.7)
2 (66.7%)
0 (0.0%)
Rational Numbers Rational Numbers
5
32 (avg. 6.4)
3 (60.0%)
0 (0.0%)
Two Bucket Two Bucket
5
6 (avg. 1.2)
2 (40.0%)
0 (0.0%)
Complex Numbers Complex Numbers
4
21 (avg. 5.3)
3 (75.0%)
0 (0.0%)
Knapsack Knapsack
3
2 (avg. 0.7)
2 (66.7%)
0 (0.0%)
Linked List Linked List
6
51 (avg. 8.5)
3 (50.0%)
0 (0.0%)
All Your Base All Your Base
51
496 (avg. 9.7)
47 (92.2%)
0 (0.0%)
Minesweeper Minesweeper
7
26 (avg. 3.7)
5 (71.4%)
0 (0.0%)
Grep Grep
3
25 (avg. 8.3)
2 (66.7%)
0 (0.0%)
Rail Fence Cipher Rail Fence Cipher
4
3 (avg. 0.8)
3 (75.0%)
0 (0.0%)
Rectangles Rectangles
5
6 (avg. 1.2)
3 (60.0%)
0 (0.0%)
Change Change
6
3 (avg. 0.5)
3 (50.0%)
0 (0.0%)
Forth Forth
13
26 (avg. 2.0)
3 (23.1%)
1 (7.7%)
List Ops List Ops
9
121 (avg. 13.4)
6 (66.7%)
0 (0.0%)
52 unimplemented practice exercises
Alphametics Alphametics
Binary Search Binary Search
Book Store Book Store
Bowling Bowling
Connect Connect
Dominoes Dominoes
DOT DSL DOT DSL
Eliud's Eggs Eliud's Eggs
Eliud's Eggs Eliud's Eggs
Error Handling Error Handling
ETL ETL
Food Chain Food Chain
Gigasecond Gigasecond
Go Counting Go Counting
Hangman Hangman
House House
Largest Series Product Largest Series Product
Ledger Ledger
Lens Person Lens Person
Markdown Markdown
Matrix Matrix
Meetup Meetup
Micro Blog Micro Blog
OCR Numbers OCR Numbers
PaaS I/O PaaS I/O
Palindrome Products Palindrome Products
Parallel Letter Frequency Parallel Letter Frequency
Phone Number Phone Number
Poker Poker
POV POV
Prime Factors Prime Factors
Proverb Proverb
React React
REST API REST API
Saddle Points Saddle Points
Satellite Satellite
Say Say
Secret Handshake Secret Handshake
Series Series
SGF Parsing SGF Parsing
State of Tic-Tac-Toe State of Tic-Tac-Toe
Strain Strain
Sublist Sublist
Sum of Multiples Sum of Multiples
Tournament Tournament
Transpose Transpose
Tree Building Tree Building
Variable Length Quantity Variable Length Quantity
Word Search Word Search
Yacht Yacht
Zebra Puzzle Zebra Puzzle
Zipper 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

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

Current version: 49bca8c0af365925d27b651324580096a846fcb3 (Takes up to 10 mins to deploy)

Total Test Runner Runs
9,166
Test Run Pass Rate
28.2% (2584)
Test Run Fail Rate
51.5% (4718)
Test Run Error Rate
20.3% (1864)

Representer

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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: b88708dec5f5f6e2f209d824ba782262f0c7fc85 (Takes up to 10 mins to deploy)

Total Representer Runs
2,034
Total Representation Comments Made
0
Feedback Given Frequency
0.0%

Analyzer

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

Next goal: Build an Analyzer. Find out more.