How to use LINQ with a 2 dimensional array

Question

I have a 2-dimensional byte array that looks something like this:

0 0 0 0 1

1 1 1 1 0

0 0 1 1 1

1 0 1 0 1

Answer 1

// This code is extracted from
// http://www.codeproject.com/Articles/170662/Using-LINQ-and-Extension-Methods-in-C-to-Sort-Vect
private static IEnumerable ConvertToSingleDimension(T[,] source)
{
    T[] arRow;
    for (int row = 0; row < source.GetLength(0); ++row)
    {
        arRow = new T[source.GetLength(1)];
        for (int col = 0; col < source.GetLength(1); ++col)
            arRow[col] = source[row, col];
        yield return arRow;
    }
}


// Convert byte[,] to anonymous type {int index, IEnumerable} for linq operation
var result = (from item in ConvertToSingleDimension(Array2D).Select((i, index) => new {Values = i, Index = index})
             orderby item.Values.Sum(i => i) descending, item.Index
             select item.Index).FirstOrDefault();