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  1. using System;
  2. using System.Collections.Generic;
  3. using System.Text;
  4.  
  5. public class Test
  6. {
  7. 	public static void Main()
  8. 	{
  9. 	    var fileMenu = new Tree<string>("File")
  10. 	        .AddChild("Open")
  11. 	        .AddChild("Edit")
  12. 	        .AddChild(
  13. 	            new Tree<string>("Recent Files")
  14. 	                .AddChild("foo.txt")
  15. 	                .AddChild("bar.txt"))
  16. 	        .AddChild("Exit");
  17. 	    Console.WriteLine(fileMenu.ToString());
  18. 	}
  19.  
  20. 	class Tree<T>
  21. 	{
  22. 	    private readonly T value;
  23. 	    private readonly List<Tree<T>> children = new List<Tree<T>>();
  24.  
  25. 	    public Tree(T value)
  26. 	    {
  27. 	        this.value = value;
  28. 	    }
  29.  
  30. 	    public IEnumerable<Tree<T>> Children
  31. 	    {
  32. 	        get { return this.children; }
  33. 	    }
  34.  
  35. 	    public T Value
  36. 	    {
  37. 	    	get { return this.value; }
  38. 	    }
  39.  
  40. 	    public Tree<T> AddChild(Tree<T> tree)
  41. 	    {
  42. 	        this.children.Add(tree);
  43. 	        return this;
  44. 	    }
  45.  
  46. 	    public Tree<T> AddChild(T value)
  47. 	    {
  48. 	        return this.AddChild(new Tree<T>(value));
  49. 	    }
  50.  
  51. 	    public override string ToString()
  52. 	    {
  53. 	        var sb = new StringBuilder();
  54. 	        ToStringHelper(sb, 1);
  55. 	        return sb.ToString();
  56. 	    }
  57.  
  58. 	    private void ToStringHelper(StringBuilder sb, int depth)
  59. 	    {
  60. 	        sb.AppendLine(this.value.ToString());
  61. 	        foreach (var child in this.children)
  62. 	        {
  63. 	            sb.Append('-', depth);
  64. 	            child.ToStringHelper(sb, depth + 1);
  65. 	        }
  66. 	    }
  67. 	}
  68. }
Success #stdin #stdout 0.03s 24160KB
comments (?)
stdin
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Standard input is empty
stdout
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File
-Open
-Edit
-Recent Files
--foo.txt
--bar.txt
-Exit
https://ideone.com/CE2zb8
language:
C# (gmcs 5.20.1)
created:
10 years ago
visibility:
public

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