C# Dizi Random Dizi, C#

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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)
        {
          Random rastgele = new Random(); 
            int salla;
            int[] dizilerim = new int[5];
            int a = 0;

for (int i = 0; i < 5; i++)
            {
                salla = rastgele.Next(1, 6);

for (int j = 0; j < dizilerim.Length; j++)
                {
                    if (dizilerim[j] == salla)
                    {
                        a++;
                        i--;
                        break;

}

}
                if (a == 0)
                {
                    dizilerim[i] = salla;
                }
                a = 0;

}
            for (int i = 0; i < 5; i++)
            {
                Console.WriteLine(dizilerim[i]);
            }

Console.ReadLine();
        }
    }
}

Show compiler warnings [ + ] Show input
Compilation time: 0,12 sec, absolute running time: 10 sec, cpu time: 0,06 sec, average memory usage: 22 Mb, average nr of threads: 5