[Глава 5] Поиск в ширину
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Пытков Роман
23
Chapter5_BreadthFirstSearch/Bfs.cs
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23
Chapter5_BreadthFirstSearch/Bfs.cs
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using GrokAlgorithms.Chapter5_BreadthFirstSearch;
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static class Bfs
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{
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public static TreeNode<T>? Search<T>(TreeNode<T> root, Func<T, bool> condition)
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{
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Queue<TreeNode<T>> queue = new();
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queue.Enqueue(root);
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HashSet<TreeNode<T>> visited = [];
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while (queue.Count > 0)
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{
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var curr = queue.Dequeue();
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if (visited.Contains(curr))
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continue;
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if (condition(curr.Value))
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return curr;
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foreach (var child in curr.Children)
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queue.Enqueue(child);
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visited.Add(curr);
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}
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return null;
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}
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}
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@@ -0,0 +1,10 @@
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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<OutputType>Exe</OutputType>
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<TargetFramework>net8.0</TargetFramework>
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<ImplicitUsings>enable</ImplicitUsings>
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<Nullable>enable</Nullable>
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</PropertyGroup>
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</Project>
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28
Chapter5_BreadthFirstSearch/Program.cs
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28
Chapter5_BreadthFirstSearch/Program.cs
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@@ -0,0 +1,28 @@
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using GrokAlgorithms.Chapter5_BreadthFirstSearch;
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int count = 0;
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// Команда для построения дерева
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TreeNode<int> BuildTreeCommand(int value, int depth, int branchingFactor)
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{
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var node = new TreeNode<int>(value) { Comment = $"{count++}" };
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if (depth == 0) return node;
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for (int i = 1; i <= branchingFactor; i++)
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node.Children.Add(BuildTreeCommand(value + i * 10, depth - 1, branchingFactor));
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return node;
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}
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// Команда для печати дерева
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void PrintTreeCommand(TreeNode<int> node, string indent = "")
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{
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Console.WriteLine($"{indent}{node.Value} [{node.Comment}] {(node.Selected ? " Selected" : "")}");
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foreach (var child in node.Children)
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PrintTreeCommand(child, indent + " ");
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}
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var root = BuildTreeCommand(1, 3, 2);
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var found = Bfs.Search(root, (num) => num > 25);
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if (found != null)
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found.Selected = true;
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PrintTreeCommand(root);
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18
Chapter5_BreadthFirstSearch/TreeNode.cs
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18
Chapter5_BreadthFirstSearch/TreeNode.cs
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@@ -0,0 +1,18 @@
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namespace GrokAlgorithms.Chapter5_BreadthFirstSearch;
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public class TreeNode<T>
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{
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public T Value { get; init; }
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public string Comment { get; init; }
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public List<TreeNode<T>> Children { get; init; }
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public bool Selected { get; set; }
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public TreeNode(T value)
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{
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Value = value;
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Comment = "";
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Children = new List<TreeNode<T>>();
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Selected = false;
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}
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}
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@@ -1,30 +1,24 @@
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Microsoft Visual Studio Solution File, Format Version 12.00
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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio Version 17
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VisualStudioVersion = 17.0.31903.59
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Chapter4_QuickSort", "Chapter4_QuickSort\Chapter4_QuickSort.csproj", "{4088F633-80E4-44DF-9DE4-996A4B3E3088}"
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Chapter5_BreadthFirstSearch", "Chapter5_BreadthFirstSearch\Chapter5_BreadthFirstSearch.csproj", "{F54FC00B-FB3D-4A8B-ABA8-33A43FC74DE4}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{7F895D96-6E79-40BC-A778-89E76BC981F6}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{7F895D96-6E79-40BC-A778-89E76BC981F6}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{7F895D96-6E79-40BC-A778-89E76BC981F6}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{7F895D96-6E79-40BC-A778-89E76BC981F6}.Release|Any CPU.Build.0 = Release|Any CPU
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{C4C54C0A-59E1-4C40-B2C2-D8C800603AF6}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{C4C54C0A-59E1-4C40-B2C2-D8C800603AF6}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{C4C54C0A-59E1-4C40-B2C2-D8C800603AF6}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{C4C54C0A-59E1-4C40-B2C2-D8C800603AF6}.Release|Any CPU.Build.0 = Release|Any CPU
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{4088F633-80E4-44DF-9DE4-996A4B3E3088}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{4088F633-80E4-44DF-9DE4-996A4B3E3088}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{4088F633-80E4-44DF-9DE4-996A4B3E3088}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{4088F633-80E4-44DF-9DE4-996A4B3E3088}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{4088F633-80E4-44DF-9DE4-996A4B3E3088}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{4088F633-80E4-44DF-9DE4-996A4B3E3088}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{4088F633-80E4-44DF-9DE4-996A4B3E3088}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{4088F633-80E4-44DF-9DE4-996A4B3E3088}.Release|Any CPU.Build.0 = Release|Any CPU
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{F54FC00B-FB3D-4A8B-ABA8-33A43FC74DE4}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{F54FC00B-FB3D-4A8B-ABA8-33A43FC74DE4}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{F54FC00B-FB3D-4A8B-ABA8-33A43FC74DE4}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{F54FC00B-FB3D-4A8B-ABA8-33A43FC74DE4}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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EndGlobal
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