Objective-C impact and status on Exercism

Objective-C

2,025 students

About Objective-C

Practice

30 contributors

70 mentors

Objective-C Track Management

This page provides the Exercism community with the information and tools needed to manage the Objective-C track.

Students

2,025

Submissions

2,069

Mentoring Discussions

The Objective-C 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: c731d2576db2809640876563e142a887d4b0d23b (Updates should be instant)

Next goal: Implement 130 practice exercises. Find out more.

51 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

589

415 (avg. 0.7)

303 (51.4%)

0 (0.0%)

Bob

257

310 (avg. 1.2)

202 (78.6%)

23 (8.9%)

Difference of Squares

77 (avg. 1.1)

52 (73.2%)

6 (8.5%)

Gigasecond

67 (avg. 1.1)

49 (77.8%)

4 (6.3%)

Leap

98 (avg. 1.1)

74 (81.3%)

6 (6.6%)

Reverse String

48 (avg. 1.0)

35 (70.0%)

1 (2.0%)

Space Age

42 (avg. 0.9)

35 (77.8%)

1 (2.2%)

Sum of Multiples

54 (avg. 1.1)

36 (73.5%)

1 (2.0%)

Two Fer

110

105 (avg. 1.0)

61 (55.5%)

27 (24.5%)

ETL

36 (avg. 1.0)

29 (78.4%)

0 (0.0%)

Flatten Array

32 (avg. 1.2)

19 (73.1%)

0 (0.0%)

Grade School

46 (avg. 1.0)

34 (73.9%)

0 (0.0%)

Hamming

111 (avg. 1.2)

87 (91.6%)

4 (4.2%)

Isogram

27 (avg. 1.2)

17 (77.3%)

0 (0.0%)

Nucleotide Count

52 (avg. 1.1)

39 (84.8%)

3 (6.5%)

Prime Factors

16 (avg. 0.8)

12 (60.0%)

0 (0.0%)

Raindrops

40 (avg. 0.9)

29 (67.4%)

3 (7.0%)

RNA Transcription

14 (avg. 1.1)

9 (69.2%)

0 (0.0%)

Atbash Cipher

14 (avg. 1.0)

10 (71.4%)

0 (0.0%)

Clock

15 (avg. 0.9)

10 (62.5%)

0 (0.0%)

Collatz Conjecture

10 (avg. 0.9)

7 (63.6%)

0 (0.0%)

Grains

11 (avg. 1.0)

8 (72.7%)

0 (0.0%)

Perfect Numbers

11 (avg. 0.8)

10 (71.4%)

0 (0.0%)

Phone Number

30 (avg. 1.0)

26 (89.7%)

1 (3.4%)

Robot Name

30 (avg. 1.0)

23 (76.7%)

0 (0.0%)

Scrabble Score

13 (avg. 0.8)

10 (62.5%)

0 (0.0%)

Secret Handshake

9 (avg. 0.8)

7 (63.6%)

0 (0.0%)

Series

5 (avg. 0.5)

5 (45.5%)

0 (0.0%)

Sieve

8 (avg. 0.7)

7 (63.6%)

0 (0.0%)

Strain

9 (avg. 0.8)

7 (63.6%)

0 (0.0%)

Sublist

16 (avg. 0.9)

12 (66.7%)

0 (0.0%)

Triangle

10 (avg. 0.6)

9 (56.3%)

0 (0.0%)

Acronym

13 (avg. 0.9)

9 (60.0%)

0 (0.0%)

All Your Base

11 (avg. 0.7)

11 (68.8%)

0 (0.0%)

Allergies

15 (avg. 1.1)

10 (71.4%)

0 (0.0%)

Anagram

52 (avg. 1.2)

38 (90.5%)

1 (2.4%)

Beer Song

15 (avg. 1.0)

11 (73.3%)

0 (0.0%)

Binary Search

12 (avg. 1.1)

6 (54.5%)

0 (0.0%)

Crypto Square

4 (avg. 0.4)

4 (44.4%)

0 (0.0%)

Largest Series Product

9 (avg. 0.8)

7 (63.6%)

0 (0.0%)

Meetup

9 (avg. 0.8)

5 (45.5%)

0 (0.0%)

Nth Prime

10 (avg. 0.9)

6 (54.5%)

0 (0.0%)

Pangram

9 (avg. 0.7)

7 (53.8%)

0 (0.0%)

Pascal's Triangle

10 (avg. 1.0)

6 (60.0%)

0 (0.0%)

Say

7 (avg. 0.9)

4 (50.0%)

0 (0.0%)

Transpose

8 (avg. 0.9)

5 (55.6%)

0 (0.0%)

Word Count

67 (avg. 1.2)

50 (92.6%)

2 (3.7%)

Matching Brackets

12 (avg. 1.0)

7 (58.3%)

0 (0.0%)

Luhn

11 (avg. 0.8)

7 (50.0%)

0 (0.0%)

Roman Numerals

7 (avg. 0.6)

7 (63.6%)

0 (0.0%)

Run-Length Encoding

7 (avg. 0.5)

7 (50.0%)

0 (0.0%)

79 unimplemented practice exercises

Affine Cipher

Alphametics

Armstrong Numbers

Bank Account

Binary Search Tree

Book Store

Bottle Song

Bowling

Change

Circular Buffer

Complex Numbers

Connect

Conway's Game of Life

Custom Set

D&D Character

Darts

Diamond

Dominoes

DOT DSL

Eliud's Eggs

Error Handling

Food Chain

Forth

Go Counting

Grep

Hangman

High Scores

House

ISBN Verifier

Killer Sudoku Helper

Kindergarten Garden

Knapsack

Ledger

Lens Person

Linked List

List Ops

Markdown

Matrix

Micro Blog

Minesweeper

OCR Numbers

PaaS I/O

Palindrome Products

Parallel Letter Frequency

Pig Latin

Poker

POV

Protein Translation

Proverb

Pythagorean Triplet

Queen Attack

Rail Fence Cipher

Rational Numbers

React

Rectangles

Resistor Color

Resistor Color Duo

Resistor Color Trio

REST API

Robot Simulator

Rotational Cipher

Saddle Points

Satellite

SGF Parsing

Simple Cipher

Simple Linked List

Spiral Matrix

Square Root

State of Tic-Tac-Toe

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.

Next goal: Build a Test Runner. Find out more.

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

Next goal: Build an Analyzer. Find out more.

Volunteers

masters3d

1,025

robtimp

964

kytrinyx

759

+ 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

#48in24 Challenge

Your Journey

Exercism Perks

Community Videos

Brief Introduction Series

Interviews & Stories

Discord

Forum

Getting started

Mentoring

Docs

Contributors

Donate

About Exercism

Our Impact

Insiders

SWAG

Objective-C Track Management

The Objective-C track needs attention ⚠️

Practice Exercises

Programming Tags

Test Runner

Representer

Analyzer

We 💙 our volunteers