SOExample, 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 Program
    {
        public static void Main(string[] args)
        {
            List<string> values = new List<string>() { "(1,1,1)", "(1,2,1)", "(1,4,1)", "(2,3,2)", "(2,5,2)", "(1,4,2)", "(1,2,2)", "(1,1,2)", "(2,5,1)", "(2,4,1)", "(2,9,1)" };
            List<Vector3> vectors = values.Select(v => new Vector3(v)).ToList();
            var result = vectors
                .GroupBy(v => Tuple.Create(v.X, v.Z))
                .Select(vg => vg.OrderByDescending(v => v.Y).First())
                .ToList();
                         
            foreach (var val in result)
            {
                Console.Write(val.ToString() + " ");
            }
            Console.WriteLine();
        }
    }
    
    public class Vector3
    {
        public int X {get;set;}
        public int Y {get;set;}
        public int Z {get;set;}
        
        public Vector3()
        {
        }
        
        public Vector3(string vector)
        {
            var parts = Regex.Match(vector, @"\(?(?<x>\d+),(?<y>\d+),(?<z>\d+)\)?");
            X = int.Parse(parts.Groups["x"].Value);
            Y = int.Parse(parts.Groups["y"].Value);
            Z = int.Parse(parts.Groups["z"].Value);
        }
        
        public override string ToString()
        {
            return string.Format("({0},{1},{2})", X, Y, Z);
        }
    }
}

Show compiler warnings [ + ] Show input
Compilation time: 0,19 sec, absolute running time: 0,22 sec, cpu time: 0,22 sec, average memory usage: 18 Mb, average nr of threads: 4, absolute service time: 0,43 sec