-
Notifications
You must be signed in to change notification settings - Fork 7
/
Program.cs
43 lines (41 loc) · 1.11 KB
/
Program.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
using System;
using System.Collections.Generic;
using FindLeavesOfBinaryTree;
namespace FindLeavesOfBinaryTree
{
public class TreeNode
{
public int val;
public TreeNode left;
public TreeNode right;
public TreeNode(int val = 0, TreeNode left = null, TreeNode right = null)
{
this.val = val;
this.left = left;
this.right = right;
}
}
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Hello World!");
}
public IList<IList<int>> FindLeaves(TreeNode root)
{
var res = new List<IList<int>>();
DFS(root, res);
return res;
}
public int DFS(TreeNode node, List<IList<int>> res)
{
if (node == null) return -1;
var left = DFS(node.left, res);
var right = DFS(node.right, res);
int height = Math.Max(left, right) + 1;
if(height == res.Count) res.Add(new List<int>());
res[height].Add(node.val);
return height;
}
}
}