243
students have developed their V skills on Exercism.

Students
243
Submissions
5,539
Mentoring Discussions
17

The V track needs attention ⚠️

Building

Build

Use your knowledge to build the V track itself

Build Test Runners

Learn More

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

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

Usage statistics

Total Test Runner Runs
5,503
Test Run Pass Rate
26.8% (1473)
Test Run Fail Rate
26.7% (1467)
Test Run Error Rate
46.6% (2563)

Build Analyzers

Learn More

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

Next goal: Build an Analyzer. Find out more.

Build Representers

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.

Create 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.

Next goal: Implement at least 30 practice exercises. Find out more.

Usage statistics

28 active practice exercises
Started
Attempts
Completions
Mentoring requests
Hello World Hello World
202
273 (avg. 1.4)
177 (87.6%)
0 (0.0%)
Leap Leap
137
335 (avg. 2.4)
107 (78.1%)
1 (0.7%)
Collatz Conjecture Collatz Conjecture
55
288 (avg. 5.2)
48 (87.3%)
4 (7.3%)
Reverse String Reverse String
95
315 (avg. 3.3)
83 (87.4%)
1 (1.1%)
Space Age Space Age
62
336 (avg. 5.4)
54 (87.1%)
2 (3.2%)
Triangle Triangle
61
245 (avg. 4.0)
53 (86.9%)
2 (3.3%)
Grains Grains
53
596 (avg. 11.2)
42 (79.2%)
2 (3.8%)
Pangram Pangram
52
349 (avg. 6.7)
43 (82.7%)
1 (1.9%)
Two Fer Two Fer
45
114 (avg. 2.5)
38 (84.4%)
1 (2.2%)
Raindrops Raindrops
39
80 (avg. 2.1)
34 (87.2%)
0 (0.0%)
Grade School Grade School
27
461 (avg. 17.1)
21 (77.8%)
0 (0.0%)
Nucleotide Count Nucleotide Count
34
129 (avg. 3.8)
28 (82.4%)
0 (0.0%)
Nth Prime Nth Prime
28
121 (avg. 4.3)
21 (75.0%)
0 (0.0%)
Robot Name Robot Name
26
212 (avg. 8.2)
21 (80.8%)
0 (0.0%)
Prime Factors Prime Factors
23
90 (avg. 3.9)
20 (87.0%)
1 (4.3%)
Sieve Sieve
28
200 (avg. 7.1)
24 (85.7%)
1 (3.6%)
Queen Attack Queen Attack
26
187 (avg. 7.2)
21 (80.8%)
1 (3.8%)
Hamming Hamming
27
83 (avg. 3.1)
23 (85.2%)
0 (0.0%)
Isogram Isogram
29
151 (avg. 5.2)
26 (89.7%)
0 (0.0%)
Scrabble Score Scrabble Score
27
89 (avg. 3.3)
23 (85.2%)
0 (0.0%)
Meetup Meetup
18
233 (avg. 12.9)
14 (77.8%)
1 (5.6%)
Clock Clock
25
196 (avg. 7.8)
20 (80.0%)
0 (0.0%)
Secret Handshake Secret Handshake
16
53 (avg. 3.3)
11 (68.8%)
0 (0.0%)
Binary Search Binary Search
19
134 (avg. 7.1)
13 (68.4%)
0 (0.0%)
Accumulate Accumulate
30
60 (avg. 2.0)
24 (80.0%)
0 (0.0%)
Simple Linked List Simple Linked List
16
190 (avg. 11.9)
9 (56.3%)
1 (6.3%)
RNA Transcription RNA Transcription
5
4 (avg. 0.8)
4 (80.0%)
0 (0.0%)
Linked List Linked List
4
15 (avg. 3.8)
1 (25.0%)
0 (0.0%)
101 unimplemented practice exercises
Acronym Acronym
Affine Cipher Affine Cipher
All Your Base All Your Base
Allergies Allergies
Alphametics Alphametics
Anagram Anagram
Armstrong Numbers Armstrong Numbers
Atbash Cipher Atbash Cipher
Bank Account Bank Account
Binary Search Tree Binary Search Tree
Bob Bob
Book Store Book Store
Bottle Song Bottle Song
Bowling Bowling
Change Change
Circular Buffer Circular Buffer
Complex Numbers Complex Numbers
Connect Connect
Crypto Square Crypto Square
Custom Set Custom Set
D&D Character D&D Character
DOT DSL DOT DSL
Darts Darts
Diamond Diamond
Difference of Squares Difference of Squares
Dominoes Dominoes
ETL ETL
Error Handling Error Handling
Flatten Array Flatten Array
Food Chain Food Chain
Forth Forth
Gigasecond Gigasecond
Go Counting Go Counting
Grep Grep
Hangman Hangman
High Scores High Scores
House House
ISBN Verifier ISBN Verifier
Killer Sudoku Helper Killer Sudoku Helper
Kindergarten Garden Kindergarten Garden
Knapsack Knapsack
Largest Series Product Largest Series Product
Ledger Ledger
Lens Person Lens Person
List Ops List Ops
Luhn Luhn
Markdown Markdown
Matching Brackets Matching Brackets
Matrix Matrix
Micro Blog Micro Blog
Minesweeper Minesweeper
OCR Numbers OCR Numbers
POV POV
PaaS I/O PaaS I/O
Palindrome Products Palindrome Products
Parallel Letter Frequency Parallel Letter Frequency
Pascal's Triangle Pascal's Triangle
Perfect Numbers Perfect Numbers
Phone Number Phone Number
Pig Latin Pig Latin
Poker Poker
Protein Translation Protein Translation
Proverb Proverb
Pythagorean Triplet Pythagorean Triplet
REST API REST API
Rail Fence Cipher Rail Fence Cipher
Rational Numbers Rational Numbers
React React
Rectangles Rectangles
Resistor Color Resistor Color
Resistor Color Duo Resistor Color Duo
Resistor Color Trio Resistor Color Trio
Robot Simulator Robot Simulator
Roman Numerals Roman Numerals
Rotational Cipher Rotational Cipher
Run-Length Encoding Run-Length Encoding
SGF Parsing SGF Parsing
Saddle Points Saddle Points
Satellite Satellite
Say Say
Scale Generator Scale Generator
Series Series
Simple Cipher Simple Cipher
Spiral Matrix Spiral Matrix
Square Root Square Root
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
Twelve Days Twelve Days
Two Bucket Two Bucket
Variable Length Quantity Variable Length Quantity
Word Count Word Count
Word Search Word Search
Wordy Wordy
Yacht Yacht
Zebra Puzzle Zebra Puzzle
Zipper Zipper