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Program.cs
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Program.cs
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using System;
namespace UnivaluedBinaryTree
{
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!");
}
static bool IsUnivalTree(TreeNode root)
{
if (root == null)
return false;
var leftCorrect = root.left == null || (root.val == root.left.val && IsUnivalTree(root.left));
var rightCorrect = root.right == null || (root.val == root.right.val && IsUnivalTree(root.right));
return leftCorrect && rightCorrect;
}
}
}