ru.so, C# - rextester

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//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Node
    {
        public Node Left;
        public Node Right;
        public object Value;
        //public int TotalNodeCount => 1 + (Left?.TotalNodeCount ?? 0) + (Right?.TotalNodeCount ?? 0);
    }
    public class Program
    {
        public static void Main(string[] args)
        {
            Node root = new Node(){Value = "root"};
            root.Left = new Node() { Left = null, Right = null, Value = "left"};
            root.Right = root;
            if (root == root.Right) Console.WriteLine(root.Value + " cсылается сам на себя"); else Console.Write(root.Value + " Не ссылается сам на себя"); 
            if (root == root.Left) Console.WriteLine(root.Value + " Ссылается сам на себя"); else Console.Write(root.Value + " Не ссылается сам на себя");
        }
    }
}

Show compiler warnings [ + ] Show input
Compilation time: 0,22 sec, absolute running time: 0,14 sec, cpu time: 0,14 sec, average memory usage: 13 Mb, average nr of threads: 2, absolute service time: 0,38 sec