using System;

using System.Collections.Generic;

using System.Linq;

​

public class MainClass

{

    public static void Main(string[] args)

    {

        var random = new Random(0);

        var time = Generate(DateTime.Now, TimeSpan.FromSeconds(10), 100, random)

            .OrderBy(i => i)

            .GroupBy(i => i);

​

        foreach (var t in time) {

            Console.WriteLine("{0} {1}", t.Key, t.Count());

        }

    }

​

    public static IEnumerable<DateTime> Generate(DateTime from, TimeSpan offset, int count, Random random = null)

    {

        if (random == null)

        {

            random = new Random();

        }

​

        for (int i = 0; i < count; i++)

        {

            var seconds = (long)(random.NextDouble() * offset.TotalSeconds);

            yield return from + TimeSpan.FromSeconds(seconds);

        }

​

    }

}