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Program.cs
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Program.cs
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using System;
using System.Collections.Generic;
namespace NaryTreePreorderTraversal
{
public class Node
{
public int val;
public IList<Node> children;
public Node() { }
public Node(int _val)
{
val = _val;
}
public Node(int _val, IList<Node> _children)
{
val = _val;
children = _children;
}
}
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Hello World!");
}
public IList<int> Preorder(Node root)
{
var res = new List<int>();
Pre(root, res);
return res;
}
private void Pre(Node node, List<int> res)
{
if (node == null)
return;
res.Add(node.val);
foreach (var child in node.children)
Pre(child, res);
}
}
}