From eff0cba9d50f082639228af534dd65fe227cafa1 Mon Sep 17 00:00:00 2001 From: ellnix Date: Fri, 24 May 2024 00:12:53 +0200 Subject: [PATCH] Add Eliud's Eggs exercise (#1681) --------- Co-authored-by: Victor Goff --- config.json | 11 +++++ .../eliuds-eggs/.docs/instructions.md | 8 ++++ .../eliuds-eggs/.docs/introduction.md | 47 +++++++++++++++++++ .../practice/eliuds-eggs/.meta/config.json | 19 ++++++++ .../practice/eliuds-eggs/.meta/example.rb | 5 ++ .../practice/eliuds-eggs/.meta/tests.toml | 22 +++++++++ exercises/practice/eliuds-eggs/eliuds_eggs.rb | 7 +++ .../practice/eliuds-eggs/eliuds_eggs_test.rb | 24 ++++++++++ 8 files changed, 143 insertions(+) create mode 100644 exercises/practice/eliuds-eggs/.docs/instructions.md create mode 100644 exercises/practice/eliuds-eggs/.docs/introduction.md create mode 100644 exercises/practice/eliuds-eggs/.meta/config.json create mode 100644 exercises/practice/eliuds-eggs/.meta/example.rb create mode 100644 exercises/practice/eliuds-eggs/.meta/tests.toml create mode 100644 exercises/practice/eliuds-eggs/eliuds_eggs.rb create mode 100644 exercises/practice/eliuds-eggs/eliuds_eggs_test.rb diff --git a/config.json b/config.json index 05075b0685..4cf3af1049 100644 --- a/config.json +++ b/config.json @@ -335,6 +335,17 @@ ], "difficulty": 3 }, + { + "slug": "eliuds-eggs", + "name": "Eliud's Eggs", + "uuid": "d9e488a6-c232-47cf-91c2-06249fa3f0b5", + "practices": [ + "numbers", + "enumeration" + ], + "prerequisites": [], + "difficulty": 3 + }, { "slug": "hamming", "name": "Hamming", diff --git a/exercises/practice/eliuds-eggs/.docs/instructions.md b/exercises/practice/eliuds-eggs/.docs/instructions.md new file mode 100644 index 0000000000..b0c2df593c --- /dev/null +++ b/exercises/practice/eliuds-eggs/.docs/instructions.md @@ -0,0 +1,8 @@ +# Instructions + +Your task is to count the number of 1 bits in the binary representation of a number. + +## Restrictions + +Keep your hands off that bit-count functionality provided by your standard library! +Solve this one yourself using other basic tools instead. diff --git a/exercises/practice/eliuds-eggs/.docs/introduction.md b/exercises/practice/eliuds-eggs/.docs/introduction.md new file mode 100644 index 0000000000..49eaffd8bc --- /dev/null +++ b/exercises/practice/eliuds-eggs/.docs/introduction.md @@ -0,0 +1,47 @@ +# Introduction + +Your friend Eliud inherited a farm from her grandma Tigist. +Her granny was an inventor and had a tendency to build things in an overly complicated manner. +The chicken coop has a digital display showing an encoded number representing the positions of all eggs that could be picked up. + +Eliud is asking you to write a program that shows the actual number of eggs in the coop. + +The position information encoding is calculated as follows: + +1. Scan the potential egg-laying spots and mark down a `1` for an existing egg or a `0` for an empty spot. +2. Convert the number from binary to decimal. +3. Show the result on the display. + +Example 1: + +```text +Chicken Coop: + _ _ _ _ _ _ _ +|E| |E|E| | |E| + +Resulting Binary: + 1 0 1 1 0 0 1 + +Decimal number on the display: +89 + +Actual eggs in the coop: +4 +``` + +Example 2: + +```text +Chicken Coop: + _ _ _ _ _ _ _ _ +| | | |E| | | | | + +Resulting Binary: + 0 0 0 1 0 0 0 0 + +Decimal number on the display: +16 + +Actual eggs in the coop: +1 +``` diff --git a/exercises/practice/eliuds-eggs/.meta/config.json b/exercises/practice/eliuds-eggs/.meta/config.json new file mode 100644 index 0000000000..1610b0db7b --- /dev/null +++ b/exercises/practice/eliuds-eggs/.meta/config.json @@ -0,0 +1,19 @@ +{ + "authors": [ + "ellnix" + ], + "files": { + "solution": [ + "eliuds_eggs.rb" + ], + "test": [ + "eliuds_eggs_test.rb" + ], + "example": [ + ".meta/example.rb" + ] + }, + "blurb": "Help Eliud count the number of eggs in her chicken coop by counting the number of 1 bits in a binary representation.", + "source": "Christian Willner, Eric Willigers", + "source_url": "https://forum.exercism.org/t/new-exercise-suggestion-pop-count/7632/5" +} diff --git a/exercises/practice/eliuds-eggs/.meta/example.rb b/exercises/practice/eliuds-eggs/.meta/example.rb new file mode 100644 index 0000000000..cf5470d884 --- /dev/null +++ b/exercises/practice/eliuds-eggs/.meta/example.rb @@ -0,0 +1,5 @@ +module EliudsEggs + def self.egg_count(display_number) + display_number.to_s(2).count('1') + end +end diff --git a/exercises/practice/eliuds-eggs/.meta/tests.toml b/exercises/practice/eliuds-eggs/.meta/tests.toml new file mode 100644 index 0000000000..e11683c2ef --- /dev/null +++ b/exercises/practice/eliuds-eggs/.meta/tests.toml @@ -0,0 +1,22 @@ +# This is an auto-generated file. +# +# Regenerating this file via `configlet sync` will: +# - Recreate every `description` key/value pair +# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications +# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion) +# - Preserve any other key/value pair +# +# As user-added comments (using the # character) will be removed when this file +# is regenerated, comments can be added via a `comment` key. + +[559e789d-07d1-4422-9004-3b699f83bca3] +description = "0 eggs" + +[97223282-f71e-490c-92f0-b3ec9e275aba] +description = "1 egg" + +[1f8fd18f-26e9-4144-9a0e-57cdfc4f4ff5] +description = "4 eggs" + +[0c18be92-a498-4ef2-bcbb-28ac4b06cb81] +description = "13 eggs" diff --git a/exercises/practice/eliuds-eggs/eliuds_eggs.rb b/exercises/practice/eliuds-eggs/eliuds_eggs.rb new file mode 100644 index 0000000000..3073febdcd --- /dev/null +++ b/exercises/practice/eliuds-eggs/eliuds_eggs.rb @@ -0,0 +1,7 @@ +=begin +Write your code for the 'Eliuds Eggs' exercise in this file. Make the tests in +`eliuds_eggs_test.rb` pass. + +To get started with TDD, see the `README.md` file in your +`ruby/eliuds-eggs` directory. +=end diff --git a/exercises/practice/eliuds-eggs/eliuds_eggs_test.rb b/exercises/practice/eliuds-eggs/eliuds_eggs_test.rb new file mode 100644 index 0000000000..78768d2da3 --- /dev/null +++ b/exercises/practice/eliuds-eggs/eliuds_eggs_test.rb @@ -0,0 +1,24 @@ +require 'minitest/autorun' +require_relative 'eliuds_eggs' + +class EliudsEggsTest < Minitest::Test + def test_0_eggs + # skip + assert_equal 0, EliudsEggs.egg_count(0) + end + + def test_1_egg + skip + assert_equal 1, EliudsEggs.egg_count(16) + end + + def test_4_eggs + skip + assert_equal 4, EliudsEggs.egg_count(89) + end + + def test_13_eggs + skip + assert_equal 13, EliudsEggs.egg_count(2_000_000_000) + end +end