Sort example, C# - rextester

Sort example

//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<Test> tList = new List<Test> () { new Test("A", 1, 2), new Test("B", 5, 1), new Test("C", 0, 4), new Test("D", 5, 0), new Test("E", 0, 4) };
            
            //Console.WriteLine(string.Join(",", tList.ConvertAll<string>(t => (t == null).ToString())));
            
            /*tList.Sort((a, b) => {
                if ( a.x > b.x) {
                    return 1;
                } else if (b.x > a.x) {
                    return -1;
                } else {
                  if ( a.y >= b.y) {
                    return 1;
                  } else {
                    return -1;
                  }
                }
            });*/
            
            tList.Sort();

//Your code goes here
            Console.WriteLine(string.Join(",", tList.ConvertAll<string>(t => t.name)));
        }
    }
    
    public class Test : IComparable {
        public string name;
        public int x;
        public int y;
        
        public Test(string name, int x, int y) {
           this.name = name;
           this.x = x;
           this.y = y;
        }
        
        public int CompareTo(object obj) {
            if (obj == null) return 1;

Test otherTest = obj as Test;
            if (otherTest != null) {
                int compare = x.CompareTo(otherTest.x);
                if ( compare == 0 ) {
                    compare = y.CompareTo(otherTest.y);
                }
                
                return compare;
            }
            else {
               throw new ArgumentException("Object is not a Test");
            }
        }
    }
}


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