50335442 v06, 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)
        {
            var myArr1 = new string[]{"S1", "S2", "S3"};
            var myArr2 = new string[]{"S1", "S2", "S3", "S4"};
            
            Console.WriteLine("Array 1: " +  myArr1[myArr1.Length - 2] + "." + myArr1[myArr1.Length - 1]);
            Console.WriteLine("Array 2: " +  myArr2[myArr2.Length - 2] + "." + myArr2[myArr2.Length - 1]);
            
            Console.WriteLine("Array 1: " +  myArr1[myArr1.Length - 2] + "." + myArr1.Last());
            Console.WriteLine("Array 2: " +  myArr2[myArr2.Length - 2] + "." + myArr2.Last());            
            
            //Console.WriteLine("Array 1: " +  myArr1[myArr1.Length - 2] + "." + myArr1.LastOrDefault());
            //Console.WriteLine("Array 2: " +  myArr2[myArr2.Length - 2] + "." + myArr2.LastOrDefault());

}
    }
}

Show compiler warnings [ + ] Show input
Compilation time: 0,16 sec, absolute running time: 0,09 sec, cpu time: 0,08 sec, average memory usage: 14 Mb, average nr of threads: 3