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39 changes: 39 additions & 0 deletions
39
exercises/practice/relative-distance/.docs/instructions.md
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| # Instructions | ||
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| Your task is to determine the degree of separation between two individuals in a family tree. | ||
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| - You will be given an input, with all parent names and their children. | ||
| - Each name is unique, a child _can_ have one or two parents. | ||
| - The degree of separation is defined as the shortest number of connections from one person to another. | ||
| - If two individuals are not connected, return a value that represents "no known relationship." | ||
| Please see the test cases for the actual implementation. | ||
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| ## Example | ||
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| Given the following family tree: | ||
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| ```text | ||
| ┌──────────┐ ┌──────────┐ ┌───────────┐ | ||
| │ Helena │ │ Erdős │ │ Shusaku │ | ||
| └───┬───┬──┘ └─────┬────┘ └──────┬────┘ | ||
| ┌───┘ └───────┐ └──────┬──────┘ | ||
| ▼ ▼ ▼ | ||
| ┌──────────┐ ┌────────┐ ┌──────────┐ | ||
| │ Isla │ │ Tariq │ │ Kevin │ | ||
| └────┬─────┘ └────┬───┘ └──────────┘ | ||
| ▼ ▼ | ||
| ┌─────────┐ ┌────────┐ | ||
| │ Uma │ │ Morphy │ | ||
| └─────────┘ └────────┘ | ||
| ``` | ||
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| The degree of separation between Tariq and Uma is 3 (Tariq → Helena → Isla → Uma). | ||
| There's no known relationship between Isla and [Kevin][six-bacons], as there is no connection in the given data. | ||
| The degree of separation between Uma and Isla is 1. | ||
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| ~~~~exercism/note | ||
| Isla and Tariq are siblings and have a separation of 1. | ||
| Similarly, this implementation would report a separation of 2 from you to your father's brother. | ||
| ~~~~ | ||
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| [six-bacons]: https://en.m.wikipedia.org/wiki/Six_Degrees_of_Kevin_Bacon |
12 changes: 12 additions & 0 deletions
12
exercises/practice/relative-distance/.docs/introduction.md
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| # Introduction | ||
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| You've been hired to develop **Noble Knots**, the hottest new dating app for nobility! | ||
| With centuries of royal intermarriage, things have gotten… _complicated_. | ||
| To avoid any _oops-we're-twins_ situations, your job is to build a system that checks how closely two people are related. | ||
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| Noble Knots is inspired by Iceland's "[Islendinga-App][islendiga-app]," which is backed up by a database that traces all known family connections between Icelanders from the time of the settlement of Iceland. | ||
| Your algorithm will determine the **degree of separation** between two individuals in the royal family tree. | ||
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| Will your app help crown a perfect match? | ||
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| [islendiga-app]: http://www.islendingaapp.is/information-in-english/ |
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| ############################### | ||
| # Core EditorConfig Options # | ||
| ############################### | ||
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| ; This file is for unifying the coding style for different editors and IDEs. | ||
| ; More information at: | ||
| ; https://docs.microsoft.com/en-us/visualstudio/ide/editorconfig-code-style-settings-reference?view=vs-2017 | ||
| ; https://docs.microsoft.com/en-us/visualstudio/ide/create-portable-custom-editor-options?view=vs-2017 | ||
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| root = true | ||
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| [*] | ||
| indent_style = space | ||
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| [RelativeDistance.cs] | ||
| indent_size = 4 | ||
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| ############################### | ||
| # .NET Coding Conventions # | ||
| ############################### | ||
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| # Organize usings | ||
| dotnet_sort_system_directives_first = true | ||
| dotnet_separate_import_directive_groups = true | ||
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| # this. preferences | ||
| dotnet_style_qualification_for_field = false:suggestion | ||
| dotnet_style_qualification_for_property = false:suggestion | ||
| dotnet_style_qualification_for_method = false:suggestion | ||
| dotnet_style_qualification_for_event = false:suggestion | ||
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| # Language keywords vs BCL types preferences | ||
| dotnet_style_predefined_type_for_locals_parameters_members = true:suggestion | ||
| dotnet_style_predefined_type_for_member_access = true:suggestion | ||
|
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| # Parentheses preferences | ||
| dotnet_style_parentheses_in_arithmetic_binary_operators = never_if_unnecessary:none | ||
| dotnet_style_parentheses_in_relational_binary_operators = never_if_unnecessary:none | ||
| dotnet_style_parentheses_in_other_binary_operators = never_if_unnecessary:none | ||
| dotnet_style_parentheses_in_other_operators = never_if_unnecessary:suggestion | ||
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| # Modifier preferences | ||
| dotnet_style_require_accessibility_modifiers = always:suggestion | ||
| dotnet_style_readonly_field = true:suggestion | ||
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| # Expression-level preferences | ||
| dotnet_style_object_initializer = true:suggestion | ||
| dotnet_style_collection_initializer = true:suggestion | ||
| dotnet_style_explicit_tuple_names = true:suggestion | ||
| dotnet_style_prefer_inferred_tuple_names = true:suggestion | ||
| dotnet_style_prefer_inferred_anonymous_type_member_names = true:suggestion | ||
| dotnet_style_prefer_auto_properties = true:suggestion | ||
| dotnet_style_prefer_is_null_check_over_reference_equality_method = true:suggestion | ||
| dotnet_style_prefer_conditional_expression_over_assignment = true:suggestion | ||
| dotnet_style_prefer_conditional_expression_over_return = true:suggestion | ||
| dotnet_style_coalesce_expression = true:suggestion | ||
| dotnet_style_null_propagation = true:suggestion | ||
|
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| ############################### | ||
| # Naming Conventions # | ||
| ############################### | ||
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| # Style Definitions | ||
| dotnet_naming_style.pascal_case_style.capitalization = pascal_case | ||
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| # Use PascalCase for constant fields | ||
| dotnet_naming_rule.constant_fields_should_be_pascal_case.severity = suggestion | ||
| dotnet_naming_rule.constant_fields_should_be_pascal_case.symbols = constant_fields | ||
| dotnet_naming_rule.constant_fields_should_be_pascal_case.style = pascal_case_style | ||
| dotnet_naming_symbols.constant_fields.applicable_kinds = field | ||
| dotnet_naming_symbols.constant_fields.applicable_accessibilities = * | ||
| dotnet_naming_symbols.constant_fields.required_modifiers = const | ||
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| ############################### | ||
| # C# Code Style Rules # | ||
| ############################### | ||
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| # var preferences | ||
| csharp_style_var_for_built_in_types = true:none | ||
| csharp_style_var_when_type_is_apparent = true:none | ||
| csharp_style_var_elsewhere = true:none | ||
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| # Expression-bodied members | ||
| csharp_style_expression_bodied_methods = true:suggestion | ||
| csharp_style_expression_bodied_constructors = true:suggestion | ||
| csharp_style_expression_bodied_operators = true:suggestion | ||
| csharp_style_expression_bodied_properties = true:suggestion | ||
| csharp_style_expression_bodied_indexers = true:suggestion | ||
| csharp_style_expression_bodied_accessors = true:suggestion | ||
|
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| # Pattern-matching preferences | ||
| csharp_style_pattern_matching_over_is_with_cast_check = true:suggestion | ||
| csharp_style_pattern_matching_over_as_with_null_check = true:suggestion | ||
|
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| # Null-checking preferences | ||
| csharp_style_throw_expression = true:suggestion | ||
| csharp_style_conditional_delegate_call = true:suggestion | ||
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| # Modifier preferences | ||
| csharp_preferred_modifier_order = public,private,protected,internal,static,extern,new,virtual,abstract,sealed,override,readonly,unsafe,volatile,async:suggestion | ||
|
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| # Expression-level preferences | ||
| csharp_prefer_braces = true:none | ||
| csharp_prefer_simple_default_expression = true:suggestion | ||
| csharp_style_deconstructed_variable_declaration = true:suggestion | ||
| csharp_style_pattern_local_over_anonymous_function = true:suggestion | ||
| csharp_style_inlined_variable_declaration = true:suggestion | ||
|
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| ############################### | ||
| # C# Formatting Rules # | ||
| ############################### | ||
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| # New line preferences | ||
| csharp_new_line_before_open_brace = all | ||
| csharp_new_line_before_else = true | ||
| csharp_new_line_before_catch = true | ||
| csharp_new_line_before_finally = true | ||
| csharp_new_line_before_members_in_object_initializers = false | ||
| csharp_new_line_before_members_in_anonymous_types = false | ||
| csharp_new_line_between_query_expression_clauses = true | ||
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| # Indentation preferences | ||
| csharp_indent_case_contents = true | ||
| csharp_indent_switch_labels = true | ||
| csharp_indent_labels = flush_left | ||
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| # Space preferences | ||
| csharp_space_after_cast = false | ||
| csharp_space_after_keywords_in_control_flow_statements = true | ||
| csharp_space_between_method_declaration_parameter_list_parentheses = false | ||
| csharp_space_between_method_call_parameter_list_parentheses = false | ||
| csharp_space_before_colon_in_inheritance_clause = true | ||
| csharp_space_after_colon_in_inheritance_clause = true | ||
| csharp_space_around_binary_operators = before_and_after | ||
| csharp_space_between_method_declaration_empty_parameter_list_parentheses = false | ||
| csharp_space_between_method_call_name_and_opening_parenthesis = false | ||
| csharp_space_between_method_call_empty_parameter_list_parentheses = false | ||
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| # Wrapping preferences | ||
| csharp_preserve_single_line_blocks = true | ||
| csharp_preserve_single_line_statements = true |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,55 @@ | ||
| public class RelativeDistance | ||
| { | ||
| private readonly Dictionary<string, HashSet<string>> relatives; | ||
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| public RelativeDistance(Dictionary<string, List<string>> familyTree) | ||
| { | ||
| Dictionary<string, HashSet<string>> parsed = new(); | ||
| foreach (var (parent, children) in familyTree) | ||
| { | ||
| var parentConnections = parsed.GetValueOrDefault(parent, []); | ||
| foreach (string child in children) | ||
| { | ||
| parentConnections.Add(child); | ||
| var childConnections = parsed.GetValueOrDefault(child, []) | ||
| .Union(children.Where(sibling => sibling != child)).ToHashSet(); | ||
| childConnections.Add(parent); | ||
| parsed[child] = childConnections; | ||
| } | ||
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| parsed[parent] = parentConnections; | ||
| } | ||
| relatives = parsed; | ||
| } | ||
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| public int DegreeOfSeparation(string personA, string personB) | ||
| { | ||
| if (!relatives.ContainsKey(personA) || !relatives.ContainsKey(personB)) | ||
| { | ||
| return -1; | ||
| } | ||
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| Queue<(string Person, int Degree)> queue = new(); | ||
| queue.Enqueue((personA, 0)); | ||
| HashSet<string> visited = [personA]; | ||
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| while (queue.Count > 0) | ||
| { | ||
| var (currentPerson, degree) = queue.Dequeue(); | ||
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| if (currentPerson == personB) | ||
| { | ||
| return degree; | ||
| } | ||
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| var unvisited = relatives[currentPerson].Except(visited).ToHashSet(); | ||
| foreach (string neighbor in unvisited) | ||
| { | ||
| queue.Enqueue((neighbor, degree + 1)); | ||
| } | ||
| visited.UnionWith(unvisited); | ||
| } | ||
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| return -1; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,10 @@ | ||
| public class {{ testClass }} | ||
| { | ||
| {{- for test in tests }} | ||
| [Fact{{ if !for.first }}(Skip = "Remove this Skip property to run this test"){{ end }}] | ||
| public void {{ test.testMethod }}() | ||
| { | ||
| Assert.Equal({{ test.expected }}, {{ testedClass }}.{{ test.testedMethod }}({{ test.input.familyTree }}, {{ test.input.personA | string.literal }}, {{ test.input.personB | string.literal }})); | ||
| } | ||
| {{ end -}} | ||
| } |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,19 @@ | ||
| { | ||
| "authors": [ | ||
| "BNAndras" | ||
| ], | ||
| "files": { | ||
| "solution": [ | ||
| "RelativeDistance.cs" | ||
| ], | ||
| "test": [ | ||
| "RelativeDistanceTests.cs" | ||
| ], | ||
| "example": [ | ||
| ".meta/Example.cs" | ||
| ] | ||
| }, | ||
| "blurb": "Given a family tree, calculate the degree of separation.", | ||
| "source": "vaeng", | ||
| "source_url": "https://github.com/exercism/problem-specifications/pull/2537" | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| # 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. | ||
|
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| [4a1ded74-5d32-47fb-8ae5-321f51d06b5b] | ||
| description = "Direct parent-child relation" | ||
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| [30d17269-83e9-4f82-a0d7-8ef9656d8dce] | ||
| description = "Sibling relationship" | ||
|
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| [8dffa27d-a8ab-496d-80b3-2f21c77648b5] | ||
| description = "Two degrees of separation, grandchild" | ||
|
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| [34e56ec1-d528-4a42-908e-020a4606ee60] | ||
| description = "Unrelated individuals" | ||
|
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| [93ffe989-bad2-48c4-878f-3acb1ce2611b] | ||
| description = "Complex graph, cousins" | ||
|
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| [2cc2e76b-013a-433c-9486-1dbe29bf06e5] | ||
| description = "Complex graph, no shortcut, far removed nephew" | ||
|
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| [46c9fbcb-e464-455f-a718-049ea3c7400a] | ||
| description = "Complex graph, some shortcuts, cross-down and cross-up, cousins several times removed, with unrelated family tree" |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,12 @@ | ||
| public class RelativeDistance | ||
| { | ||
| public RelativeDistance(Dictionary<string, List<string>> familyTree) | ||
| { | ||
| throw new NotImplementedException("You need to implement this method."); | ||
| } | ||
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| public int DegreeOfSeparation(string personA, string personB) | ||
| { | ||
| throw new NotImplementedException("You need to implement this method."); | ||
| } | ||
| } |
18 changes: 18 additions & 0 deletions
18
exercises/practice/relative-distance/RelativeDistance.csproj
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,18 @@ | ||
| <Project Sdk="Microsoft.NET.Sdk"> | ||
| <PropertyGroup> | ||
| <ImplicitUsings>enable</ImplicitUsings> | ||
| <Nullable>enable</Nullable> | ||
| <OutputType>Exe</OutputType> | ||
| <TargetFramework>net9.0</TargetFramework> | ||
| <RestorePackagesWithLockFile>true</RestorePackagesWithLockFile> | ||
| </PropertyGroup> | ||
| <ItemGroup> | ||
| <Using Include="Xunit" /> | ||
| </ItemGroup> | ||
| <ItemGroup> | ||
| <PackageReference Include="Exercism.Tests.xunit.v3" Version="0.1.0-beta1" /> | ||
| <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" /> | ||
| <PackageReference Include="xunit.v3" Version="1.1.0" /> | ||
| <PackageReference Include="xunit.runner.visualstudio" Version="3.0.1" /> | ||
| </ItemGroup> | ||
| </Project> |
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Could you add some prerequisites?