Groovy

2,654 students

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Exercises

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30 contributors

62 mentors

2,654
students have developed their Groovy skills on Exercism.

Students

2,654

Submissions

23,380

Mentoring Discussions

609

The Groovy track needs attention ⚠️

Building

Build

Use your knowledge to build the Groovy track itself

30 contributors

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. Groovy is currently utilising a Version 1 Test Runner. Find out more.

Usage statistics

Total Test Runner Runs

20,655

Test Run Pass Rate

25.5% (5277)

Test Run Fail Rate

61.6% (12725)

Test Run Error Rate

12.8% (2653)

Build Analyzers

Learn More

Build an Analyzer for Groovy: 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 129 practice exercises. Find out more.

Usage statistics

55 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

1,420

3,922 (avg. 2.8)

982 (69.2%)

1 (0.1%)

Two Fer

754

3,556 (avg. 4.7)

471 (62.5%)

152 (20.2%)

Hamming

463

2,406 (avg. 5.2)

325 (70.2%)

76 (16.4%)

Gigasecond

228

1,016 (avg. 4.5)

163 (71.5%)

48 (21.1%)

Scrabble Score

209

989 (avg. 4.7)

162 (77.5%)

37 (17.7%)

Difference of Squares

188

729 (avg. 3.9)

152 (80.9%)

30 (16.0%)

Secret Handshake

120

424 (avg. 3.5)

97 (80.8%)

27 (22.5%)

Matrix

266 (avg. 2.7)

76 (77.6%)

27 (27.6%)

Triangle

380 (avg. 3.9)

77 (78.6%)

25 (25.5%)

Rotational Cipher

278 (avg. 3.3)

71 (85.5%)

23 (27.7%)

Saddle Points

207 (avg. 3.2)

53 (81.5%)

20 (30.8%)

Flatten Array

212 (avg. 2.6)

69 (85.2%)

18 (22.2%)

Word Count

111

480 (avg. 4.3)

84 (75.7%)

15 (13.5%)

Robot Name

104

266 (avg. 2.6)

76 (73.1%)

14 (13.5%)

Binary Search

151 (avg. 2.5)

54 (90.0%)

12 (20.0%)

Bank Account

489 (avg. 7.1)

54 (78.3%)

14 (20.3%)

Linked List

117 (avg. 1.7)

53 (77.9%)

14 (20.6%)

Raindrops

301

574 (avg. 1.9)

227 (75.4%)

15 (5.0%)

Isogram

165

337 (avg. 2.0)

129 (78.2%)

9 (5.5%)

Anagram

130

286 (avg. 2.2)

99 (76.2%)

6 (4.6%)

Reverse String

157

208 (avg. 1.3)

138 (87.9%)

3 (1.9%)

Darts

119

222 (avg. 1.9)

94 (79.0%)

1 (0.8%)

Resistor Color

127

380 (avg. 3.0)

102 (80.3%)

3 (2.4%)

Protein Translation

196 (avg. 2.2)

74 (82.2%)

0 (0.0%)

Proverb

136 (avg. 1.9)

64 (87.7%)

1 (1.4%)

Bob

335 (avg. 4.4)

57 (75.0%)

2 (2.6%)

Accumulate

274 (avg. 3.7)

63 (85.1%)

1 (1.4%)

Resistor Color Duo

240 (avg. 2.9)

70 (84.3%)

0 (0.0%)

Strain

153 (avg. 2.3)

58 (86.6%)

0 (0.0%)

ISBN Verifier

174 (avg. 2.9)

44 (73.3%)

1 (1.7%)

Luhn

152 (avg. 2.6)

45 (77.6%)

1 (1.7%)

Roman Numerals

159 (avg. 2.6)

49 (80.3%)

1 (1.6%)

Nucleotide Count

96 (avg. 1.9)

46 (92.0%)

0 (0.0%)

Phone Number

159 (avg. 2.2)

52 (72.2%)

1 (1.4%)

Series

168 (avg. 3.3)

44 (86.3%)

0 (0.0%)

Leap

101

185 (avg. 1.8)

87 (86.1%)

0 (0.0%)

Resistor Color Trio

150 (avg. 2.1)

49 (68.1%)

0 (0.0%)

Allergies

136 (avg. 2.7)

41 (80.4%)

0 (0.0%)

Perfect Numbers

143 (avg. 2.8)

41 (80.4%)

0 (0.0%)

Sum of Multiples

168 (avg. 3.5)

40 (83.3%)

0 (0.0%)

Collatz Conjecture

127 (avg. 2.9)

37 (84.1%)

0 (0.0%)

Nth Prime

180 (avg. 3.2)

45 (80.4%)

1 (1.8%)

Prime Factors

102 (avg. 2.6)

32 (80.0%)

0 (0.0%)

Atbash Cipher

78 (avg. 2.2)

32 (88.9%)

0 (0.0%)

Run-Length Encoding

98 (avg. 2.5)

34 (87.2%)

0 (0.0%)

All Your Base

133 (avg. 3.5)

32 (84.2%)

0 (0.0%)

Matching Brackets

183 (avg. 3.4)

36 (66.7%)

0 (0.0%)

ETL

78 (avg. 1.7)

37 (82.2%)

1 (2.2%)

High Scores

235 (avg. 3.4)

55 (78.6%)

0 (0.0%)

Armstrong Numbers

259 (avg. 3.1)

67 (80.7%)

4 (4.8%)

RNA Transcription

158 (avg. 1.6)

85 (85.9%)

4 (4.0%)

Acronym

213 (avg. 3.0)

60 (83.3%)

2 (2.8%)

Pangram

246 (avg. 3.2)

65 (83.3%)

3 (3.8%)

Space Age

238 (avg. 3.3)

59 (81.9%)

0 (0.0%)

Grains

133 (avg. 2.1)

53 (82.8%)

1 (1.6%)

74 unimplemented practice exercises

Affine Cipher

Alphametics

Binary Search Tree

Book Store

Bottle Song

Bowling

Change

Circular Buffer

Clock

Complex Numbers

Connect

Crypto Square

Custom Set

D&D Character

DOT DSL

Diamond

Dominoes

Error Handling

Food Chain

Forth

Go Counting

Grade School

Grep

Hangman

House

Killer Sudoku Helper

Kindergarten Garden

Knapsack

Largest Series Product

Ledger

Lens Person

List Ops

Markdown

Meetup

Micro Blog

Minesweeper

OCR Numbers

POV

PaaS I/O

Palindrome Products

Parallel Letter Frequency

Pascal's Triangle

Pig Latin

Poker

Pythagorean Triplet

Queen Attack

REST API

Rail Fence Cipher

Rational Numbers

React

Rectangles

Robot Simulator

SGF Parsing

Satellite

Say

Scale Generator

Sieve

Simple Cipher

Simple Linked List

Spiral Matrix

Square Root

State of Tic-Tac-Toe

Sublist

Tournament

Transpose

Tree Building

Twelve Days

Two Bucket

Variable Length Quantity

Word Search

Wordy

Yacht

Zebra Puzzle

Zipper

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2,654 students have developed their Groovy skills on Exercism.

The Groovy track needs attention ⚠️

Build

Build Test Runners

Usage statistics

Build Analyzers

Build Representers

Create Practice Exercises

Usage statistics

We 💙 our volunteers

2,654
students have developed their Groovy skills on Exercism.