Objective-C impact and status on Exercism

Objective-C

2,284 students

About Objective-C

Practice

32 contributors

74 mentors

Objective-C Track Management

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

Students

2,284

Submissions

2,193

Mentoring Discussions

The Objective-C 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: d924b035e90abdd9a42c35599e92459402b21c97 (Updates should be instant)

Next goal: Implement 135 practice exercises. Find out more.

51 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

675

462 (avg. 0.7)

346 (51.3%)

0 (0.0%)

Bob

283

320 (avg. 1.1)

210 (74.2%)

23 (8.1%)

Difference of Squares

86 (avg. 1.0)

60 (70.6%)

6 (7.1%)

Gigasecond

75 (avg. 1.0)

54 (75.0%)

4 (5.6%)

Leap

103 (avg. 1.1)

79 (80.6%)

6 (6.1%)

Reverse String

51 (avg. 0.9)

38 (70.4%)

1 (1.9%)

Space Age

44 (avg. 0.9)

37 (77.1%)

2 (4.2%)

Sum of Multiples

57 (avg. 1.1)

39 (75.0%)

1 (1.9%)

Two Fer

113

107 (avg. 0.9)

63 (55.8%)

27 (23.9%)

ETL

37 (avg. 0.9)

30 (76.9%)

0 (0.0%)

Flatten Array

34 (avg. 1.2)

21 (72.4%)

0 (0.0%)

Grade School

48 (avg. 1.0)

36 (73.5%)

0 (0.0%)

Hamming

113 (avg. 1.2)

89 (90.8%)

4 (4.1%)

Isogram

29 (avg. 1.2)

19 (76.0%)

0 (0.0%)

Nucleotide Count

54 (avg. 1.1)

41 (82.0%)

3 (6.0%)

Prime Factors

18 (avg. 0.8)

14 (60.9%)

0 (0.0%)

Raindrops

42 (avg. 0.9)

31 (67.4%)

3 (6.5%)

RNA Transcription

16 (avg. 1.0)

11 (68.8%)

0 (0.0%)

Atbash Cipher

16 (avg. 0.9)

12 (70.6%)

0 (0.0%)

Clock

17 (avg. 0.9)

11 (57.9%)

0 (0.0%)

Collatz Conjecture

11 (avg. 0.8)

8 (61.5%)

0 (0.0%)

Grains

12 (avg. 0.9)

9 (69.2%)

0 (0.0%)

Perfect Numbers

12 (avg. 0.8)

11 (68.8%)

0 (0.0%)

Phone Number

31 (avg. 1.0)

26 (83.9%)

1 (3.2%)

Robot Name

31 (avg. 1.0)

24 (75.0%)

0 (0.0%)

Scrabble Score

13 (avg. 0.8)

10 (58.8%)

0 (0.0%)

Secret Handshake

10 (avg. 0.8)

8 (61.5%)

0 (0.0%)

Series

5 (avg. 0.4)

5 (41.7%)

0 (0.0%)

Sieve

8 (avg. 0.7)

7 (58.3%)

0 (0.0%)

Strain

9 (avg. 0.8)

7 (58.3%)

0 (0.0%)

Sublist

18 (avg. 0.9)

14 (66.7%)

0 (0.0%)

Triangle

11 (avg. 0.6)

10 (55.6%)

0 (0.0%)

Acronym

14 (avg. 0.8)

10 (58.8%)

0 (0.0%)

All Your Base

11 (avg. 0.6)

11 (61.1%)

0 (0.0%)

Allergies

16 (avg. 1.0)

11 (68.8%)

0 (0.0%)

Anagram

52 (avg. 1.2)

38 (88.4%)

1 (2.3%)

Beer Song

15 (avg. 0.9)

11 (68.8%)

0 (0.0%)

Binary Search

14 (avg. 1.1)

7 (53.8%)

0 (0.0%)

Crypto Square

4 (avg. 0.4)

4 (40.0%)

0 (0.0%)

Largest Series Product

9 (avg. 0.8)

7 (58.3%)

0 (0.0%)

Meetup

9 (avg. 0.8)

5 (41.7%)

0 (0.0%)

Nth Prime

10 (avg. 0.8)

6 (50.0%)

0 (0.0%)

Pangram

9 (avg. 0.6)

7 (50.0%)

0 (0.0%)

Pascal's Triangle

11 (avg. 0.9)

7 (58.3%)

0 (0.0%)

Say

7 (avg. 0.8)

4 (44.4%)

0 (0.0%)

Transpose

8 (avg. 0.8)

5 (50.0%)

0 (0.0%)

Word Count

67 (avg. 1.2)

50 (90.9%)

2 (3.6%)

Matching Brackets

12 (avg. 0.9)

7 (53.8%)

0 (0.0%)

Luhn

11 (avg. 0.7)

7 (46.7%)

0 (0.0%)

Roman Numerals

7 (avg. 0.6)

7 (58.3%)

0 (0.0%)

Run-Length Encoding

7 (avg. 0.5)

7 (50.0%)

0 (0.0%)

84 unimplemented practice exercises

Affine Cipher

Alphametics

Armstrong Numbers

Baffling Birthdays

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

Intergalactic Transmission

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

Relative Distance

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

Split-Second Stopwatch

Square Root

State of Tic-Tac-Toe

Swift Scheduling

Tournament

Tree Building

Twelve Days

Two Bucket

Variable Length Quantity

Word Search

Wordy

Yacht

Zebra Puzzle

Zipper

Programming Tags

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Help manage the tags used to group, filter and recommend solutions, approaches and articles.

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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.

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

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.

Next goal: Build a Representer. Find out more.

Analyzer

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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.

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