2D Array. Set all values to specific value

Question

To assign specific value to 1D array I\'m using LINQ like so:

        int[] nums = new int[20];
        nums = (from i in nums select 1).ToArray()         


        

Answer 1

Well, this might be cheating because it simply moves the looping code to an extension method, but it does allow you to initialize your 2D array to a single value simply, and in a fashion similar to how you can initialize a 1D array to a single value.

First, as Jon Skeet mentioned, you could clean up your example of initializing a 1D array like this:

int [] numbers = Enumerable.Repeat(1,20).ToArray();

With my extension method, you will be able to initialize a 2D array like this:

public static T[,] To2DArray(this IEnumerable items, int rows, int columns)
{
    var matrix = new T[rows, columns];
    int row = 0;
    int column = 0;

    foreach (T item in items)
    {
        matrix[row, column] = item;
        ++column;
        if (column == columns)
        {
            ++row;
            column = 0;
        }
    }

    return matrix;
}