C# Splitting An Array

Question

I need to split an array of indeterminate size, at the midpoint, into two separate arrays.

The array is generated from a list of strings using ToArray().

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Answer 1

I had an issue with Linq's Skip() and Take() functions when dealing with arrays with massive amounts of elements (i.e. byte arrays), where element counts are in the millions.

This approach dramatically reduced split execute times for me.

public static IEnumerable> Split(this ICollection self, int chunkSize)
{
    var splitList = new List>();
    var chunkCount = (int)Math.Ceiling((double)self.Count / (double)chunkSize);

    for(int c = 0; c < chunkCount; c++)
    {
        var skip = c * chunkSize;
        var take = skip + chunkSize;
        var chunk = new List(chunkSize);

        for(int e = skip; e < take && e < self.Count; e++)
        {
            chunk.Add(self.ElementAt(e));
        }

        splitList.Add(chunk);
    }

    return splitList;
}