Page 106 - CSharp/C#

Getting/Setting values

Now, getting one of the subarrays is easy. Let's print all the numbers of the 3rd column of a:

for (int i = 0; i < a[2].length; i++)
{
Console.WriteLine(a[2][i]);
}

Getting a specific value:

a[<row_number>][<column_number>]

Setting a specific value:

a[<row_number>][<column_number>] = <value>

Remember: It's always recommended to use jagged arrays (arrays of arrays) rather than
multidimensional arrays (matrixes). It's faster and safer to use.

Note on the order of the brackets

Consider a three-dimensional array of five-dimensional arrays of one-dimensional arrays of int.
This is written in C# as:

int[,,][,,,,][] arr = new int[8, 10, 12][,,,,][];

In the CLR type system, the convention for the ordering of the brackets is reversed, so with the
above arr instance we have:

arr.GetType().ToString() == "System.Int32[][,,,,][,,]"

and likewise:

typeof(int[,,][,,,,][]).ToString() == "System.Int32[][,,,,][,,]"

Checking if one array contains another array

public static class ArrayHelpers
{
public static bool Contains<T>(this T[] array, T[] candidate)
{
if (IsEmptyLocate(array, candidate))
return false;

if (candidate.Length > array.Length)
return false;

for (int a = 0; a <= array.Length - candidate.Length; a++)

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