Split value in 24 randomly sized parts using C#

Question

I have a value, say 20010. I want to randomly divide this value over 24 hours. So basically split the value into a 24 slot big array where all slots are randomly big.

Wh

Answer 1

Here's a functional solution using mjv's algorithm:

static int[] GetSlots(int slots, int max)
{
    return new Random().Values(1, max)
                       .Take(slots - 1)
                       .Append(0, max)
                       .OrderBy(i => i)
                       .Pairwise((x, y) => y - x)
                       .ToArray();
}

public static IEnumerable Values(this Random random, int minValue, int maxValue)
{
    while (true)
        yield return random.Next(minValue, maxValue);
}

public static IEnumerable Pairwise(this IEnumerable source, Func resultSelector)
{
    TSource previous = default(TSource);

    using (var it = source.GetEnumerator())
    {
        if (it.MoveNext())
            previous = it.Current;

        while (it.MoveNext())
            yield return resultSelector(previous, previous = it.Current);
    }
}

public static IEnumerable Append(this IEnumerable source, params T[] args)
{
    return source.Concat(args);
}