C# Online Compiler | .NET Fiddle

<no name> by Anonymous

using System;
using System.Collections.Concurrent;
using System.Linq;

public class Program
{
    public static void Main()
    {
        for (int step = 1; step <= 10; step++)
        {
            Random random = new(0);
            Console.WriteLine($"Step: {step}");
            int[] source = Enumerable.Range(1, 15)
                .OrderBy(_ => random.Next())
                .Select(x => x * step)
                .ToArray();
            Console.WriteLine($"Source shuffled: [{String.Join(", ", source)}]");
            Console.WriteLine($"Source ordered:  [{String.Join(", ", source.Order())}]");
            ConcurrentDictionary<int, string> dictionary = new();
            foreach (int i in source) dictionary.TryAdd(i, null);
            Console.WriteLine($"dictionary.Keys: [{String.Join(", ", dictionary.Keys)}]");
            Console.WriteLine();
        }
    }
}

​x
 
using System;
using System.Collections.Concurrent;
using System.Linq;
​
public class Program
{
    public static void Main()
    {
        for (int step = 1; step <= 10; step++)
        {
            Random random = new(0);
            Console.WriteLine($"Step: {step}");
            int[] source = Enumerable.Range(1, 15)
                .OrderBy(_ => random.Next())
                .Select(x => x * step)
                .ToArray();
            Console.WriteLine($"Source shuffled: [{String.Join(", ", source)}]");
            Console.WriteLine($"Source ordered:  [{String.Join(", ", source.Order())}]");
            ConcurrentDictionary<int, string> dictionary = new();
            foreach (int i in source) dictionary.TryAdd(i, null);
            Console.WriteLine($"dictionary.Keys: [{String.Join(", ", dictionary.Keys)}]");
            Console.WriteLine();
        }
    }
}

Step: 1
Source shuffled: [5, 10, 11, 8, 12, 14, 4, 6, 13, 1, 3, 2, 7, 9, 15]
Source ordered:  [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]
dictionary.Keys: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]

Step: 2
Source shuffled: [10, 20, 22, 16, 24, 28, 8, 12, 26, 2, 6, 4, 14, 18, 30]
Source ordered:  [2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30]
dictionary.Keys: [2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30]

Step: 3
Source shuffled: [15, 30, 33, 24, 36, 42, 12, 18, 39, 3, 9, 6, 21, 27, 45]
Source ordered:  [3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45]
dictionary.Keys: [39, 3, 42, 6, 45, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36]

Step: 4
Source shuffled: [20, 40, 44, 32, 48, 56, 16, 24, 52, 4, 12, 8, 28, 36, 60]
Source ordered:  [4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60]
dictionary.Keys: [40, 4, 44, 8, 48, 12, 52, 16, 56, 20, 60, 24, 28, 32, 36]

Step: 5
Source shuffled: [25, 50, 55, 40, 60, 70, 20, 30, 65, 5, 15, 10, 35, 45, 75]
Source ordered:  [5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75]
dictionary.Keys: [75, 40, 5, 45, 10, 50, 15, 55, 20, 60, 25, 65, 30, 70, 35]

Step: 6
Source shuffled: [30, 60, 66, 48, 72, 84, 24, 36, 78, 6, 18, 12, 42, 54, 90]
Source ordered:  [6, 12, 18, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, 84, 90]
dictionary.Keys: [78, 42, 6, 84, 48, 12, 90, 54, 18, 60, 24, 66, 30, 72, 36]

Step: 7
Source shuffled: [35, 70, 77, 56, 84, 98, 28, 42, 91, 7, 21, 14, 49, 63, 105]
Source ordered:  [7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98, 105]
dictionary.Keys: [77, 42, 7, 84, 49, 14, 91, 56, 21, 98, 63, 28, 105, 70, 35]

Step: 8
Source shuffled: [40, 80, 88, 64, 96, 112, 32, 48, 104, 8, 24, 16, 56, 72, 120]
Source ordered:  [8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96, 104, 112, 120]
dictionary.Keys: [112, 40, 80, 8, 120, 48, 88, 16, 56, 96, 24, 64, 104, 32, 72]

Step: 9
Source shuffled: [45, 90, 99, 72, 108, 126, 36, 54, 117, 9, 27, 18, 63, 81, 135]
Source ordered:  [9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, 108, 117, 126, 135]
dictionary.Keys: [117, 81, 45, 9, 126, 90, 54, 18, 135, 99, 63, 27, 108, 72, 36]

Step: 10
Source shuffled: [50, 100, 110, 80, 120, 140, 40, 60, 130, 10, 30, 20, 70, 90, 150]
Source ordered:  [10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150]
dictionary.Keys: [150, 40, 80, 120, 10, 50, 90, 130, 20, 60, 100, 140, 30, 70, 110]

Cached Result
Last Run:	7:41:59 am
Compile:	0.009s
Execute:	0.12s
Memory:	5.67Mb
CPU:	0.129s

View IL Code